W; ■ W}/:!<:.<>,-'*.},<. ■•l-'y.'--.>'K--\' -■ ■•■■;■■■■- ■•X,!^SS ^W**' SiK^;^..::;, *-&$&'>: '■iV':v^;■'■v'^,■■-■•^»^'•*:,'■'•,''. •' NLfl 05110733 b NATIONAL LIBRARYJ)F MEDICINE SURGEON GENERAL'S OFFICE ' LIBRARY. Section No. 113, W. D.S. G.O. no. <2.&L2:.f 2, Presented to the Statistical Division, Surgeon-General's Library, United States Army Washington, D. C. The Prudential Insurance Co. of America Newark, New Jersey NLM051107336 "£^- -C 6L/ ft'- '■'' J:<-J— .C>,S?~- -Jtr -y /£ 7 i^c vagus inhibition, gradual overfilling of the ventricles, sudden exercise of augmentor power emptying ventricles with forci- ble action allowing the heart to resume usual rhythm. 148 CARDIAC NEUROSES. one or two ordinary but forcible contractions, and then another series of delirious contractions in which first and second sounds are altogether confused and the pulse wave is a series of rapid percussion strokes of very great variation in force. The sphygmogram shows the remarka- ble variation in force of the radial pulse. This peculiar rhythm is supposed to be due to independent ventricular and auricular action. At times when the two coincide, the slow beats occur. Delirium cordis occurs frequently in mitral stenosis and in dilated hearts of gouty origin, also in myocardial degen- erations associated with chronic rheumatic arthritis. It may occur merely as a temporary phenomenon or it may be a permanent affair. It is startling at times, to feel the pulse of a person who is well to all appearances and find it tumbling around with such remarkable irregularity, yet the subjective symptoms are unimportant though the subject is usually aware of the irregularity in the pulse. Delirium cordis sometimes appears during the paroxysm of bronchial asthma. It may occur when digitalis acts unfavorably or is not tolerated, and it is sometimes the herald of the approach of asystolism. The treatment of delirium cordis includes careful diet, antarthritics, general tonics, antacids and in some cases cardiac stimulants. The following case presented an interesting combination of tremor cordis with delirium cordis. Woman aged 50. Had always been in good health and of remarkable powers of endurance. Had always been much in public life and for the last three or four years her public duties had been continuous and exacting. Had not been well for a month and made considerable effort to keep up with her work. For a week has had some irregularity of the heart which was not particularly troublesome. Last night had a sinking spell accompanied by dyspnoea and con- siderable distress in the region of the heart. I saw her towards morning about five hours after the attack began. She was flushed though the surface of the body was cool and the peripheral circulation was poor. There was moderate dyspnoea which was increased by movement. Considerable pain about praecordium with a painful consciousness of the heart's action. There had been no loss of consciousness. CARDIAC NEUROSES. 149 The neart was beating over 200 per minute and was so irregular that it could not be counted wich the aid of a stethoscope. The pulse was so weak at times that it could hardly be felt. Tnere was gastric distress and flatulent dis- tention of the abdomen. Under treatment with digitalin and strychnia the pulse improved and the rate came down to 160 per minute and was not so irregular. About once in every 45 to 60 seconds the irregularity would assume the form of a tremor cordis lasting about eight or ten seconds when the usual pulse would reappear for half a minute or more to be again inter- rupted by tremor of the heart. The patient was not con- scious of any difference in the heart's action during the per- iod of tremor though the pulse at the wrist was merely a tremulousness of the artery, if it could be felt at all. There was increased force and area of cardiac pulsation except during the tremor when little or no motion could be felt. The heart was slightly dilated. There was no valvu- lar lesion. The patient gradually recovered so as to be about with a fairly regular heart, and was lost sight of. Gallop Rhythm. This is a peculiar rhythm of the heart sounds which resembles the sounds produced by the hoofs of a galloping horse. There are three sounds to each heart action. In true gallop rhythm two of these sounds are dias- tolic and the first diastolic sound is accentuated (Fraentzel). Various descriptions have been given of the gallop rhythm, Traube described a "sort of gallop rhythm," and Potain, Johnston and Barie described it as a reduplication of the first sound. Fraentzel's distinction as to the character of the rhythm is morein conformity with its clinical manifes- tations. He admits the doubtful nature of its development, but assumes that it is due to weak heart action, reflux of blood in the two arterial tracts at different times with a cor- responding difference in the time of production of the second sound in the two arterial tracts. There must be some other causative element than weak heart, for gallop rhythm is not common in hearts that are merely weak. Gallop rhythm occurs in chronic nephritis (interstitial), in some of the so-called idiopathic cardiopathies, in acute and chronic anaemia, Addison's disease (Lagus, Fraentzel), typhoid fever (second or third week, indicative of heart 150 CARDIAC NEUROSES. failure), pneumonia (at or about the crisis, a sign of impending collapse), typhus fever, diphtheria, acute rheumatism, acute milliary tuberculosis etc. Though gallop rhythm appears to be entirely independent of any demonstrable heart lesion, it is nevertheless an evidence of weakness of the heart, and in acute diseases, at least, is an indication for the exhibition of heart stimulants. In the following case gallop rhythm developed in a car- diopathic patient suffering from influenza infection. Woman aged 42. Chronic valvulitis (aortic regurgita- tion and mitral stenosis) with good compensation. Influenza with gastro intestinal manifestations eventuating in a ty- phoid state. (Widal's test etc., excluded typhoid fever.) The urine contained some granular casts. The total solids about normal. Temperature from 97°F to 101.5QF. Pulse iiregular, very weak at times. First two days pulse 160-180 per minute; fourth day fell to 38 per minule; varied from 40 to 58 for three days, then rose to 70 78, always irregular. There were spells of restlessness with dilatation of per- ipheral vessels followed by attacks of unconsciousness last- ing from 2 to 10-12 hours. Gastric irritability and tympan- itis were troublesome. On tenth day a well marked gallop rhythm developed. The accentuation of the first diastolic sound was well defined. The pulse at the time was 73 per minute. An attack of unconsciousness on the twelfth day was followed by death in six hours. CHAPTER VII. BRONCHITIS. Inflammations of the bronchial tract have been classi- fied from aetiological, pathological and topographical stand- points by various observers. These distinctions, while serving to individualize special types of the disease, are more or less confusing. The simplest way is to restrict the classification to those well marked clinical types which, though they may at times exhibit unusual features, are still sufficiently constant in their course to constitute definite forms of bronchial inflammation. Thus we find that bronchitis may be acute or chronic. Acute bronchitis presents three distinct forms: acute catarrhal (involving the larger tubes); bronchiolitis (capillary bronchitis, suffocative catarrh), and fibrinous bronchitis (croupous bronchitis, plastic bronchitis). The unqualified term, acute bronchitis, applies to ca- tarrhal inflammation involving only the larger and medium sized tubes. [The term bronchiolitis is used as entirely dis- tinct from broncho-pneumonia. The attempt to unify these conditions clinically (Legendre, Rilliet, Roger and others) is a mistake, although it is admitted that the morbid anatomy of the two conditions is intimately associated. Nearly all fatal cases of bronchiolitis have resulted in atelectasis or in lobular consolidation. Autopsies, therefore, show the pres- ence of these conditions, nevertheless, bronchiolitis is a dis- tinct affection, and while the clinical divisions of Germain S£e, of diffuse bronchitis of the finer tubes; bronchiolitis of the intra-lobular branches; and broncho-alveolitis of the alveolar bronchi, appear somewhat more subtle than the possibilities of clinical diagnosis would warrant, we still be- lieve in adhering to the principles of Laennec in recog- nizing clinically a distinct affection of the bronchioles.] Bronchitis is most common in infancy and in senile life, 152 BRONCHITIS. because of minor degrees of individual resistance. Dentition and abnormalities of the nasal and pharnygeal passages are frequent factors in producing bronchial inflammation. Age, sex, occupation, physical condition and habits influence the occurrence of bronchitis so far as they induce added ex- posure and lessened resistance to the influences which de- termine bronchial inflammation. There is a marked feature of heredity in some forms of recurrent asthmatic bronchitis and in some cases of winter cough. Cachexia of gouty, syphilitic, tubercular, alcoholic or nephritic origin predis- pose to bronchitis. Spinal curvature and other deformities of the chest predispose to bronchial inflammation. ^Etiology.—Acute bronchitis may result from the topical effect of cold air on the skin or mucous membranes of the air passages. This is difficult to reconcile with the clinical fact that bronchial catarrh is more apt to result from a partial or limited, than a general, exposure to cold. According to Thomson, bronchitis seldom results from some irritant property or ingredient of the inspired air acting on the bronchial mucous membrane. Primary bronchitis occurs with such contagions and infections as influenza, measles and whooping-cough. Acute bronchitis may be secondary to small-pox; also from general or cardiac weakness incident to typhoid fever. Cachectic and septic conditions may give rise to acute secondary bronchitis. Local irritations from dust, gases or chemicals (iodine, bromine) may cause acute bronchial catarrh. Bronchiolitis is especially an affection of infancy and senile life. It may be primary (one-third of the cases,—Roger) or secondary, general or localized. All the causes of acute bronchitis of the larger tubes may likewise cause bronchiolitis. In a large proportion of cases it results in extension of the former condition to the smaller tubes, especially in the in- fectious diseases of childhood, although in many of these cases it is primary. The influenza infections are especially prone to induce bronchitis, which is frequently localized, par- ticularly in the lower portions of the lungs. Measles and whooping-cough are the most frequent causes of bronchiolitis before the age of five years. Emphysematous conditions, * BRONCHITIS. 153 chest deformities, rachitis, spinal curvature and all con- ditions which modify respiratory power, especially in young and weak children, are contributory toward the occurrence of bronchiolitis. Fibrinous bronchitis is a rare affection. It occurs most often in males (two to one—Fowler), and between the ages of fifteen and forty-five, although it may occur at any age. Occupations entailing exposure to cold and wet predispose to its occurrence, and the associated conditions are pul- monary tuberculosis, valvular disease, pneumonia, typhoid, cutaneous diseases, pregnancy and the catamenia. These conditions are, however, accidental, and the aetiology of fibrinous bronchitis is not known. Chronic bronchitis occurs most frequently in old age or in- early life. It may be primary from exposure or from the in- halation of irritating or poisonous air, especially when there is some constitutional vice. Secondary chronic bronchitis occurs most frequently as a result of acute attacks of bron. chitis. Climatic conditions, senility, emphysema, alcohol- ism, Bright's disease, gout, psoriasis and eczematoses. Mitral lesions, pulmonary tuberculosis, the pressure from aneurisms or mediastinal growths, bronchial stenosis or dilatation, are some of the conditions which induce chronic bronchial in- flammations. Morbid anatomy.—In acute bronchitis there is hyper- asmia of the inner fibrous coat which becomes swollen and in- filtrated with lymph cells. The basement membrane be- comes cedematous and irregular in appearance. The ciliated columnar epithelium becomes detached in patches, and from the deeper layer of flat cells various transitional forms of cells are produce i and thrown off with quantities of leuco cytes. All the structures of the bronchial wall become in- volved and leucocytes infiltrate the muscular and fibrous coats. The secretion of the mucous glands of the bronchi is greatly increased, the epithelial and secreting elements of the glands becoming desquamated. On post-mortem exam- ination the bronchial lining may not appear much altered owing to the action of the elastic fibres on the blood vessels. In some cases it may be reddened in patches. The bronchi ¥ 154 bronchitis. may contain clear, yellowish or greenish mucus. Obstruction of the tubes may produce distension of the alveoli. Pul- monary congestion, oedema, or atelectasis may occur. Em- physema of the surface or borders of the lungs develops. The right heart is overtaxed and ultimately becomes dilated. Bronchiolitis produces changes similar to acute bron- chitis. Its greater gravity depends on the interference with respiration from obstruction of a large number of the smaller tubes, and from the weakened condition of the bron- chial muscles, especially in children. The lining of the tubes is markedly injected. The tubes may be blocked with secretion and small beads of pus can be expressed from the smaller tubes. Pulmonary emphysema, atelectasis, oedema, and small, yellow areas of broncho- pneumonia may be present. The bronchi may be more or less irregularly dilated. The right heart may be dilated, and venous obstruction is greater than in acute bronchitis. Bronchiolitis is more often a general than a local affection. Fibrinous bronchitis is entirely distinct from diphtheria of the bronchi. Its exact pathological nature is not known. Its dependence on any specific microbe has not been demon- strated. The exudation may be limited to a few tubes or may be scattered through numerous areas in both lungs. The exudation forms a complete cast of the tubes affected, but does not block the larger tubes, though the smaller bronchi may be occluded with cylindrical, solid casts. The expectorated casts vary in size from small pieces, or branches, to complete casts of a bronchial tree from two to six or seven inches long. Their minute subdivisions may end in a bulbous extremity which may correspond to an infundibulum (Bier- mer). The casts are white or gray in color, of firm con- sistence, and may be flecked or stained with blood. The larger branches have nodular prominences. A cross-section of the larger casts shows a central lumen of more or less size and a lamellar structure of the walls, which consist of concentric laminae of fibrin enclosing in its meshes leuco- cytes, mucous and epithelial cells. Charcot's crystals, pig- ment cells, fat globules and blood corpuscles may also be present. [Recently it has been claimed by Beschorner, bronchitis. 155 Neelson and Grandy that -the exudation in fibrinous bron- chitis consists of mucin and not of fibrin. Klebs and Ep- pinger maintatn the fibrinous nature of the casts. In two specimens recently obtained by me, a careful series of tests made by Prof. Herzog, determined the casts to be of a fibrinous nature.] The trachea is seldom or never affected in this form of bronchitis. After death the bronchial lining may be intact and pale, or may be congested, or may be absent. The bronchial wall may be inflamed. The lung may be emphy- sematous or atelectatic. Chronic bronchitis affects any portion of the bronchial tract. It is usually limited to the larger and medium-sized tubes. The bronchial membrane may be deeply injected and of a purple or violet color. In the larger tubes longi- tudinal layers may be formed by the elastic fibres of the in- ner fibrous coat. The tubes are narrowed or dilated (bron- chiectasis). The bronchial glands are enlarged and black in color. Emphysema of the peripheral portions of the lungs is usually present. Congestion and oedema of the base of the lungs may occur and the heart may be hypertrophied or dilated. The ciliated epithelium disappears in places and is re- placed by transitional cells. Dilatation of the blood vessels and cellular infiltration cause great thickening of the inner fibrous coat. Various stages of hypertrophy and atrophy of the muscular coat will occur from the infiltration of the bronchial wall or from dilatation of the tube. Peribron- chitis is present to a greater or less extent, especially at the periphery of the lung. The cartilages may be normal, softened or calcified. The mucous glands are distended or destroyed. The muscular coat of the small arteries is hy- pertrophied and the capillary vessels dilated. Diverticula of the mucous membrane may form through relaxation and fissures in the middle coat. Induration of surrounding lung tissue occurs. Ulceration of the bronchial lining is rare, but may occur in tuberculosis and in very old people. Fistulous communications may form. In tertiary syphilis, gummy tumors and fibrous stenosis of the bronchi may occur. 156 BRONCHITIS Foetid, putrid expectoration is generally associated with bronchiectasis, though it may occur without it. The de- composition of the secretion may cause no trouble or it may cause gangrene of the lungs. Clinical history.—The clinical history of acute bron- chitis extends over a variable period lasting from a few days to three or four weeks. Its duration depends largely on the general resistance of the subject and on the condition of the respiratory apparatus; pulmonary emphysema, induration, pleuritic adhesions, etc., prolonging its cause considerably. There may be a history of a common coryza, pharyngitis and tracheitis preceding the bronchial symptoms, or the lat- ter may come on suddenly without these premonitory con- ditions, especially in children and old people, or where there • has been previously successive attacks. A history em- bracing any of the aetiological factors of the disease may be obtained. An initial chilliness may occur, but rigors are rare. The temperature is seldom above 101° F., and the pulse is only slightly increased in rate. General malaise and aching may be present. The special features are pain, cough, expectoration and dyspnoea. The pain is an early symptom and is usually a substernal soreness, or it may ex- tend across the front of the chest, or, in localized bronchitis, be located in any portion of the chest. The patient indicates the seat of the pain with the flat of the hand and not with the finger-tips, thus distinguishing it from the lancinating pain of pleurisy. The cough begins with the onset of the disease. It is first dry and hacking and may be paroxysmal.* It is pain- ful at first, and there is subsequent soreness about the sides of the chest along the attachment of the diaphragm. With the appearance of secretion the cough is not so painful, is more connected and is performed with the deliberate intent of promoting expectoration. The expectoration is at first viscid and tenacious, but as secretion increases it becomes frothy and may be streaked with blood. Later the sputum *The most sensitive portion of the bronchial tract is at the bifurcation of the bronchi (Nothnagel), though all portions are sufficiently sensitive to cause cough except the smaller branches where accumulation of mucus may result only in dyspnoea BRONCHITIS. 157 becomes more watery or else more turbid and yellowish, which indicates recovery. In the early stage the sputum consists of clear fluid, ciliated and cylindrical epithelium and mucous corpuscles; later of large numbers of pus cells, epithelial cells, hyaline cells, granular matter, oil globules, pigment granules and blood corpuscles. Dyspnoea is usually not marked in a primary attack in an adult. The breathing may be difficult, labored, but is not much accelerated. In children, however, the respiratory rate may be much increased. Moderate obstruction of the tubes may produce much dyspnoea if previous attacks have modified the functional ability of the lungs. Bronchiolitis is a serious malady. Its mortality is vari- ously given as from thirty to fifty per cent. In the majori- ty of instances it is secondary to acute bronchitis of the larger tubes or to the infectious diseases. It is peculiarly an affection of infancy or old age. Whether it be primary or secondary, its advent is announced by a rise in tempera- ure of from two to three degrees. There may be a chill, and in children convulsions may occur. There is frequent paroxysmal cough and pain. In children there is drowsi- ness, great dyspnoea, the nostrils are dilated, the respira- tion is hurried, the face hot and flushed. The cough is whistling or wheezing in character, the pulse is rapid and the temperature 102-103Q F. The pulse gradually rises to 150-180 per minute, and the temperature to 104-105° F. in the evening, although,as a rule, it is not as high as 104° un- less pneumonia be present. The respiration may be from sixty to ninety per minute. There is great restlessness and signs of exhaustion. Delirium and coma may appear, fol- lowed by death from asphyxia, preceded by blue lips, pale or livid and cold face, thready pulse and cessation of cough. The duration of bronchiolitis varies from one to three weeks. Recovery occupies a longer time. Fibroid indura- tion of the lungs extending to the pleura may result, Bron- chial dilatation may occur in these indurated areas with sur- rounding emphysema. There may be continued muco-puru- lent expectoration. These cases may be mistaken for tu- bercular disease. 158 BRONCHITIS. The following history is from a case of bronchiolitis complicating chronic bronchitis in an old person: Mrs. S., aged 71. Has had chronic bronchitis for forty years. Weight about 90 pounds. Bronchial tubes in right lung dilated. Expectorates about a pint of mucus in 24 hours and has done so for years. Feb. 12th, '98, had some pain in right chest, considerably more dyspnoea than usual. Temperature rose to 103Q F. Pulse 130. Expansion dimin- ished on right side. Respiratory sounds very feeble, per- cussion pitch slightly raised, no consolidation, rales fine and crepitating on same side. Very little air getting into lower part of right lung Skin cold and surface somewhat cya- nosed, expectoration diminished. Comatose part of the time. Treatment: Five grains of ammon. muriate and half teaspoonful of liq. am. acetat. every two hours; ^ grain of strychnia every two hours; small doses of whisky occasion- ally. Mouth wash of peroxide of hydrogen to cut viscid sputa from throat. Recovery in three weeks. Fibrinous Bronchitis presents a class of cases exhibiting but one or two attacks (acute), and these may be separated by years, but having had one attack there is a liability to recurrence. In another class (chronic) there is a succession of attacks, usually of a lesser grade of severity, the inter- vals presenting an indifferent chain of bronchial symptoms The clinical picture of the so-called acute form is repre sented in the following histories: Male, aged 40, married, beer-bottler by occupation, was perfectly well until two years ago, when he caught cold while working in a wet place. During last two years has had repeated attacks of bronchitis. These attacks would last a week or ten days and were characterized by a severe. rasping cough. Expectoration was comparatively free and there was no particular pain in the chest. About ten weeks before his recent attack he began to cough and expectorate large masses of tough, tenacious sputum, which was accom- panied at times by some bloody expectoration. About four weeks ago had high fever, great dyspnoea and distressing cough. There was diminished expansion and dullness over the lower two-thirds of the left lung as compared with the right lung. This condition lasted three or four weeks dur- ing which time he was confined to bed suffering from dysp- noea, cough, and a temperature of above 102° F. Near the end of the third week he expectorated considerable blood. BRONCHITIS. 159 The temperature remained high and the dyspnoea and cough distressing. Three days afterward he had a severe attack of dyspnoea and cough. The temperature rose to 104° F. After considerable effort he expectorated a large mass of material consisting of a cast of the bronchi mixed with mu- cus and some blood. The temperature became immediately reduced and the dyspnoea relieved. Examination, a short time after the cast was expelled, showed the air to be enter- ing all parts of the left lung with comparative freedom. The percussion note was almost normal and mucous rales were to be heard all over both lungs. Improvement was rapid. The cast was gray with a tinge of brownish red. Total length 10 cm. Two stems: the shortest about 1 cm. long and about as thick as a lead pencil. The branches run out to fine filaments with terminal dilatations. The larger tubes have nodular prominences. 160 BRONCHITIS. ^ia-an^ 1 ** ." A * M ^ V ^r %>* # The following history with a specimen of the cast was furnished me by Dr. R. Broughton, of Dwight, 111. Woman, aged 34, weight 120 pounds. Mother of two children. Anaemic. Has had several attacks of what was supposed to be la grippe. On Nov. 21st, '97, complained of headache, followed by a chill, then fever from 99 to 104° F. for about a week. Very little expectoration, though she had severe coughing spells. On Nov. 29th, after a severe and exhausting coughing spell, she expectorated a well- marked tube cast. Three other casts were expelled at in- tervals of from threeto four days. Following the expulsion BRONCHITIS. 161 of the cast the expectoration was frequent and bloody, though not great in quantity. After the last cast was ex- pelled the blood ceased. Death Dec. 9th. No autopsy. In some of the "chronic" cases, small portions of casts may be expectorated for days or weeks at a time. Pneumo- nia is not an infrequent complication of the more severe cases, and may be the cause of death. Fagge reports a death by asphyxiation* from lodgement of a portion of a cast at the tracheal bifurcation. Chronic bronchitis is met with in its mildest form in the winter cough of middle-aged or elderly people, which grad- ually becomes a constant affair. It may occur as a result of a succession of acute attacks and is marked by its proneness to relapse. % The cough gradually becomes continuous until the dis- ease is marked by remissions rather than by intermissions during its most favorable periods. The general bodily strength and weight may be maintained for years against this disease, but eventually becomes compromised, and dyspnoea upon exertion becomes associated with asthmatic breathing. Finally dyspnoea becomes permanent as a re- sult of weakness of the right ventricle whose hypertrophy has hitherto offset the resistance to the pulmonary circula tion entailed by the changes in the pulmonary parenchyma. The cough of chronic bronchitis exhibits great variety in character, and in the quantity and quality of the expec- toration. One variety is characterized by very viscid, pearly, scanty expectoration (dry catarrh), with violent and rapid paroxysms of coughing which may induce vomiting. The mucus is dislodged and raised with difficulty and emphysema is likely to develop in this form of bronchitis. Gouty arthritis is likely to be associated with this form of dry catarrh. Again, in gouty subjects with weak hearts, we may have more sudden attacks resembling pulmonary congestion and cardiac dyspnoea, with free expectoration. In most cases of chronic bronchitis, two or three spells of coughing during the day will be attended with quiet inter- vals. In others, there is constant expectoration often de- pending largely on cardiac weakness. In some cases, par- 162 BRONCHITIS. ticularly in old people, the amount of expectoration may be one or two pints in twenty-four hours (bronchorrhoea). It may be liquid and frothy (bronchorrhoea serosa—Biermer) or may be yellowish, or like the white of egg. Laennec de- scribed a form of bronchorrhoea, under the title "Chronic Idiopathic Pituitous Catarrh." In the chronic bronchitis accompanying syphilitic les- ions of the bronchi, the catarrh may be general, with second- ary lesions, or localized, in the tertiary forms. Bronchial stenosis or dilatation are usually responsible for the-profuse foetid expectoration. Pain, emaciation and night sweats may be present in these cases. Foetid or putrid expectoration is usually associated with bronchiectasis, stenosis, or with pulmonary gangrene, but may be present without either of these conditions. The breath may remain offensive after the expectoration has lost its odor. Again, the fetor may come and go. Some of the worst cases do not appear to be connected with any cause in the tubes or lung tissue. Attacks of lobular pneumonia are frequently a part of the clinical history of chronic bron- chitis in both children and old people, and in the latter are particularly to be feared. Symptoms and diagnosis.—In acute bronchitis lateral expansion is often deficient, and in children there may be inspiratory recession of the interspaces and ribs at the sides of the chest. The patient, during paroxysms of painful cough, assumes an upright position, leaning straight for- ward which is indicative of a bilateral source of the trouble and distinguishes it from pleurisy. Palpation is negative unless mucus in the larger tubes should produce a rhonchal fremitus. The percussion note is unchanged or is hyper- resonant from emphysematous conditions. Dullness at the base suggests pulmonary congestion, oedema, or collapse. Auscultation shows harsh, rough breathing, with some pro- longation of the expiratory sound. Sibilant, wheezy respir- ation is present during the dry stage. With the stage of secretion there appears sonorous rhonchi in the larger tubes large and small mucous rales in the medium sized tubes, and sub-crepitant rales in the smaller tubes. These rales are BRONCHITIS. 163 heard best during inspiration, but are also heard with ex- piration. They maybe changed by coughing. The sibilant rales are not apt to change on coughing as they are due to narrowing of the smaller tubes. The fine, sub-crepitant rales are heard just before the immediate end of the inspira- tory act and differ from the crepitant rale of pneumonia by being altered by coughing and are heard at times during expiration. The pneumonic rale is heard at the end of in- spiration, is not heard in expiration, is followed by a clear, high pitched, expiratory sound and is not modified by cough- ing or respiration. Pleuritic friction may resemble the rales of bronchitis but occurs earlier in the inspiratory act than a rale of the same size and character, and is not changed by cough or respiration. Cardiac failure from mitral stenosis, may give rise to a congestion of the lungs easily mistaken for bronchitis, as the mitral murmur may disappear with the advent of cardiac failure (Broadbent). The effect of digitalis or perhaps of venesection, with the reappear- ance of the murmur, will establish the nature of the trouble. Miliary tuberculosis has a higher temperature range than acute bronchitis, and more prostration. Apical bron- chitis must always be regarded as of probable tubercular origin. Localized bronchitis in the lower part of the lungs is a frequent result of influenza infections, the usual auscul- tatory signs being confined to a small area, the upper por- tions being clear. Bronchiolitis changes the type of breathing, especially in children. The upper portion of the chest scarcely moves and is distended with residual air, while the lower ribs, intercostal spaces and epigastrium show marked inspiratory recession. The percussion note is unchanged in the lower portions, or may be dull from collapse or oedema. In the apices there is hyper-resonance. Auscultation, early in the disease, shows good respira- tory sounds in the upper chest, but feeble sounds below. Later, when distention of the upper chest occurs, and in old people with emphysema, the breath sounds will be generally 164 BRONCHITIS. feeble. Any variety of rales may be present, but in the lower portions of the lungs, especially posteriorly, we hear the very fine, crackling rales characteristic of bronchiolitis. They are not so finely crepitant as the pneumonic rale, nor as bubbling as the oedematous rale. The distribution of the rales determines the extent, generalization or localization of the affection. Bronchiolitis is distinguished from acute bronchitis by higher temperature, greater difficulty in breathing, more dyspnoea, poor circulation and the character of the rales; from pneumonia, by absence of initial chill, of pain in the side, of panting character of respiration, of pneumonic sputum, of signs of consolidation. The temperature in pneumonia is continuously higher than in bronchiolitis. Pul- monary oedema is distinguished from bronchiolitis by its associations, and location in the lowest part of the lungs resulting from blood stasis. Miliary tuberculosis in children, and acute pneumonic tuberculosis may resemble bronchiolitis. The early apical signs in the former, and the higher and more continued fever in the latter, as well as its location in the upper lobes, will differentiate these conditions, at least with the aid of the history, associations and sputum exami- nation. Fibrinous bronchitis is usually not recognized prior to the expectoration of an exudate. After this has occurred signs of bronchial catarrh in more or less limited areas may lead to a provisional diagnosis, especially if followed by signs of bronchial obstruction and pulmonary collapse of the same region. Pneumonia might, however, give these same signs and it is at times associated with fibrinous bronchitis. Con- solidation would not disappear immediately on expectora- tion of a cast, as may occur with collapsed lung from ob- struction of the tubes. The temperature is unsafe as a guide, as. during the acute symptoms, the temperature may be as high in severe cases of fibrinous bronchitis as it would be in pneumonia. ■ Chronic bronchitis is essentially different from pulmonary phthisis, with which it is most easily confused, in its effect upon the general condition of the subject. There is,in chronic BRONCHITIS. 165 bronchitis, more or less distension of the upper portions of the chest from emphysema. The clavicles are elevated, the accessory muscles of inspiration are prominent in the neck, as the vertical expansion of the chest is increased. The supraclavicular depression is increased and in emphysema- tous chests is filled, during coughing, with the distended subclavian and innominate veins. The nose and ears ap- pear thickened, the conjunctivae cedematous, the face turgid or suffused. The skin is dry, loose and non-elastic, and the veins are enlarged, tortuous and dark. All this is in distinct contrast to the chronic consumptive. The signs elicited by palpation and percussion depend on the relative amount of emphysema, peribronchitis and induration of the lung tis- sues which may have developed. Increased fremitus may be felt in the dilated portions of the chest (upper portion), provided the connective tissue is increased somewhat, and the air pressure is marked. The percussion note is hyper resonant but varying in character over the upper portion, and may be hard and quite dull over the lower portions if these are indurated, well-blocked with mucus, or are col- lapsed, cedematous or congested. All varieties of dry and moist rales are heard. The expiration is lengthened and increased in pitch. The wavy respiration of bronchiectasis may be heard at times after a coughing spell. Syphilitic gummata, aneurisms and mediastinal growths may produce symptoms easily confounded with chronic bronchitis. Healed or quiescent cases of tuberculosis with emphysema and bronchial catarrh may easily be mistaken, particularly as these cases do not always exhibit bacilli in the sputum. Tuberculosis may be engrafted on chronic bronchitis and emphysema and not be recognized without examination of the sputum. On the other hand we occasionally find a few bacilli in the sputum of chronic bronchitis merely as an acci- dental matter; hence, a few bacilli in the sputum is not always to be regarded as evidence of tuberculosis of the lungs. When, however, the physical signs are more marked in one or both apices, tuberculosis may be suspected whether bacilli are found in the sputum or not. 166 BRONCHITIS. Treatment.—The remedies for bronchitis are legion, as the clinical index of any work on therapeutics will attest. Many of these remedies, while of undoubted value, are as certainly disagreeable and nauseating. A mixture of eight or ten ingredients is as unscientific as it is objectionable pharmaceutically. The simplest remedy is the best. In acute bronchitis the natural course is towards recovery, and a little well directed aid will usually be sufficient. In the dry stage we wish to relieve pain, bronchial irritation, and promote secretion. If the pain be severe and the pa- tient distressed, hot poultices, sinapisms, turpentine lini- ment or soap liniment with tincture of capsicum added may be of service. Dry cupping may be useful at times. For the soreness and irritation in the trachea and main bronchi, nothing is better than an oil spray, using benzoinol (plain), albolene etc. The patient can readily be taught to inha'e these sprays. The oil, beside protecting the membrane from the air, also induces secretion, which is the next object to be attained. For this purpose, ipecac, antimony, or tar- tar emetic are usually employed in doses not sufficient to cause emesis. In robust patients, the quickest way to in- duce secretion is to put one grain of tartar emetic in a cup of water and give a teaspoonful every ten minutes until there is slight nausea (Thomson). The syrup of ipecac may be used in children for producing secretion, in five drop doses every hour to a child two years old. Small doses of Dover's powder (one grain) every hour can be used in adults. Small doses of aconite frequently repeated are useful in children in the early stage to lessen fever and circulatory excitement. When secretion has begun and the cough is troublesome, as it usually is by the time the case comes under observation, the indications are to loosen the secretion so that it can be removed with as little cough as possible, and to quiet the irritability of the bronchial membrane, and lessen the cough. For these purposes the following may be used; R Am. mur,, 3ii. Codeine sulph., gr. v—vi. Liq. am. acetat., §i. m. Syr. tolu., q. s. ad Ini. bronchitis 167 Syrup of yerba santa or glycyrrhiza may be used to better cover the taste of the ammonia salt if advisable. When there is the constant hacking cough of laryngeal irritation, the following more sedative combination may be used: 9 Am. raur., 3iss. Morph. sulph., gr. iiss. Fl. ext. cannabis ind., gtt xx. M- Syr. tolu., q. s. ad liii. When the acute symptoms are past, but the cough with moderate secretion still persists, pills of terpin hydrate, or syrup of hydriodic acid, or syrup of lactucarium may be of service. At this stage, especially in old people, the follow- ing is useful. 9 Sodii iodidi, 3iss. Codeine sulph., gr. v. Fl. ext. grindel. robust., 3vi. M. Syr. tolu., q. s. ad liii. This mixture is particularly effective in localized bron- chitis. Opium should not be given to young children with bronchitis, unless in very small doses of such a preparation as the camphorated tincture. In localized bronchitis in chil- dren the syrup of hydriodic acid is very useful. In children with irritating cough and hoarseness, the following is of benefit: 9 Am. raur,, gr. XLviii. Tr. anemones pra tensis, 3i—ii. Liq. am. acetat., 3vi. m. Syr. tolu, q. s. ad liii. In bronchiolitis we have a more serious condition to con- front. In order to lessen the acute stage we may give acon- ite in sufficient doses (one or two drops in liquor of the acetate of ammonia every two hours). If any depression results a little brandy will remove it. In children, in the absence of lobular pneumonia, poultices are to be discounte- 168 bronchitis. nanced, nor is opium admissable; it adds to the danger of pulmonary collapse and pneumonia from mucous obstruction of the weakened bronchial tubes. If the mucus is tena- cious, a steam spray from lime water may give relief. Two grains of muriate of ammonia, two or three drops of tincture of bryonia, and fifteen drops of the liquor of the acetate of ammonia, should be given every two hours. If the respira- tion is above thirty-five per minute and difficult, five drops of tincture of nux vomica should be given every two hours. In adults, from ¥V to ^ of a grain of strychnia may be used. When dyspnoea is severe and mucous rales show that mucus is obstructing the tubes, it is necessary to aid in ex- pelling the secretion by causing vomiting. Ipecac, anti- mony, and apomorphia tend to increase secretion and the relief is not apt to be as permanent aswiien we use sulphate of zinc and alum (five grains of each), or yellow sulphate of mercury (two to five grains). The chest should be covered by two or three layers of flannel or a wadding jacket, In the latter stages, stimula- ting applications to the chest, one or two drams of brandy every hour, small and frequent drinks of hot milk, may all be of service in general stimulation. The intimate associa- tion of broncho-pneumonia with bronchiolitis, makes many of the means used in the former condition of interest here, but these will not now be considered. In adults, stimulation with alcohol and strychnia is necessary in the late stages of severe cases. The diet for children should be milk with lime water. For adults milk and seltzer water is best, Fibrinous bronchitis is not particularly amenable to treat- ment. During the attacks, the continuous inhalation of vapor of creosote, guaiacol, or alkaline substances, may be of use. Iodide of potassium in large doses is recommended and should be tried. Intra-tracheal injections of glycerine have been thought to aid separation of the casts. Olive oil or liquid vaseline may also be used. In the recurrent forms, change of climate may be tried though the results are very uncertain. BRONCHITIS. 169 Chronic bronchitis, of all bronchial inflammations, will tax the resources of the physician most. The tendency to relapse and the poor nutrition of the subjects of chronic bronchitis, are the chief factors in the obstinate course of the disease. Climatic treatment obviates, in a measure, the probability of relapse. Some cases do well in a warm, moist air, like the west Florida coast or the Bermudas. Others do best in a warm, dry climate, such as is found in the south- western states, or the ncrth-western states during summer. In all instances sunshine is the main requirement. The nutrition is to be improved by nourishing and easily assimilated food and by tonic medicine. Iron is the chief remedy of this kind. The iodide of iron is particularly ben- eficial, though the tasteless tincture, citrate of iron and am- monia, and Basham's mixture are all eligible. Strychnia should be given to all elderly people with chronic bronchi- tis, both as a respiratory and cardiac stimulant. In general or localized chronic bronchitis in children the syrup of hy- driodic acid is an efficient remedy. Cod-liver oil has long done duty in chronic bronchitis. To those who can take it it is a valuable remedy. The so-called alkaloids of cod-liver oil (morrhuine, gaduine, etc.) appear to exert as much influ- ence for good, on chronic bronchitis, as the oil itself, and they are much more eligible for administration. A number of histories might be cited proving this point. In a child eight years old who suffered from bronchitis for five years, and who had received all kinds of treatment including cod- liver oil, which she was fond of, complete recovery occurred in three months while under treatment with cod liver oil alkaloids. The combinations of these substances with guai- acol (liquid or carbonate) or creasote, is of good service. These latter drugs are more beneficial in small doses than in large ones, and should not be given in doses which dis- turb the stomach in the slightest. Terebene is a valuable remedy, although somewhat nauseating. It is best given in emulsion made with acacia, in doses of ten to fifteen drops. It is well adapted to cases with scanty, viscid secretion. For the morning cough, Burney Yeo advises sodium bicarbonate, gr. xv; sodium chloride, gr. v; spirits of chlo- 170 BRONCHITIS. roform, m v, in anise water, taken with a little warm water before rising. In old people a mixture containing iodide of sodium or potassium (gr. v), tincture of belladonna (gtt, iii), fluid extract of grindelia robusta or fluid extract of euphor- bia pilulifera (gtt. xv-xx), and sufficient quantity of syrup of tolu or syrup of yerba santa, will be found very useful. Iodide of sodium and fluid extract of. grindelia robusta are serviceable in localized bronchitis in adults. One of the most efficacious means of treating various forms of chronic inflammation of the upper bronchial tract is by means of sprays. The vapor from a cup of boiling water containing a teaspoonful of compound tincture of benzoin is very soothing. Albolene or benzoinol may be used as a vehicle for sprays. In dry catarrh a 2 per cent. solution of menthol, camphor, oil of eucalyptus, chloride of ammonium, wine of ipecac, etc., may be used. In dry asth- matic bronchitis, lobelia, internally, is useful. With bronchorrhoea we may use tar, turpentine, tere- bene, copaiba, senega, terpin hydrate, or hydrastis cana- densis. In foetid bronchitis, sprays or inhalations of aristol, menthol or creosote may be used. In severe cases the creo- sote vapor bath may be tried as recommended by Chaplin {vide Bronchiectasis.) In gouty bronchitis, much advantage will be found in colchicum in connection with iodides. The various mineral waters which are applicable to gouty conditions should be used. Much good will result from an occasional mercurial cholagogue followed by some aperient water. In syphi- litic bronchitis iodides and mercury are, of course, the chief remedies. In the later stages of chronic bronchitis in old people, when the right heart becomes dilated and dyspnoea is se- vere, oxygen gas, large doses of strychnia hypodermati- cally, and, under some conditions, venesection may be indi- cated. When the expectoration is sticky and difficult to re- move from the mouth and throat, these passages can be kept clean and free from mucus by rinsing the mouth with a little peroxide of hydrogen. 171 BRONCHIECTASIS. Dilatation of the bronchi is comparatively rarely ob- served clincally. Antomically it is not uncommon in its association with tuberculosis and other morbid processes of the lungs and pleura. In adults it is usually a secondary, chronic affection. In children an acute form occurs, usual- ly in association with secondary bronchitis in rickety child- ren (Carr). Bronchiectasis is most common in males. It occurs at any age but is most common during middle life- ^Etiology. — Bronchiectasis is always secondary to some disease of the bronchi, lung or pleura. Chronic bron- chitis, pulmonary cirrhosis, broncho-pneumonia, pulmonary tuberculosis and chronic pleurisy are its most frequent as- sociations. Changes in the bronchial wall and peribronchial tissue, which weaken and destroy the elasticity of the bron- chi, are the immediate factors in the production of the dila- tation. These changes are most often induced by chronic bronchitis, stenosis or. obstruction of the bronchi, pulmo- nary collapse, pneumonia, emphysema£ cirrhosis of the lung, and the various effects of chronic pleurisy. Morbid anatomy.—The dilatation of the tubes may be either cylindrical or saccular. The dilatations may be connected by tubes of normal calibre—the moniliform dila- tation of Cruveilhier. Cylindrical dilatation occurs most often in the larger tubes. Usually there are constrictions at various points. Saccular dilatation may involve large sections of the lungs, the lung tissue having disappeared and in its place are numerous sacks with an opening in the bottom of each. A whole lobe may be thus affected ("turtle lung"). The terminal bronchi are usually affected first and the size of the dilatation is proportionately greater than in the larger tubes (Biermer). The terminal extremities of the tubes are closed or obliterated early in the disease. In a large proportion of cases both lungs are affected. The acute form in children involves many tubes. When dilata- tion results from obstruction of a tube, collapse of lung tis- sue, pleurisy, etc., it is limited to the area of lung involved. The lower lobes are most often involved primarily, the apex when secondary to tuberculosis 172 BRONCHIECTASIS. The bronchial tubes exhibit the various evidences of chronic inflammation of the mucosa. The walls and peri- bronchial tissue are thickened. In the sacculated form the walls may be thin. The tubes may be empty or may contain purulent, foetid fluid of a gray or yellowish color, curdy or inspissated; or, they may be filled with a clear, jelly-like mucus without any particular odor. Various changes oc- cur in the lungs and pleurae. Areas of gangrene occur around dilated tubes. In the acute form in children the chief changes are: Acute peribronchitis; the presence of innumerable small cavities; small air containing vessels on the surface of the lungs (Fowler.) Clinical history.—Paroxysmal cough with the ex- pectoration of quanties of purulent and offensive secretion, more or less dyspnoea, some pain, occasional haemoptysis and occasionally fever, are the usual features of the history. The cough occurs in the morning or evening. As a rule the intervals are comparatively free from cough and expec- toration. The quantities expectorated at once, varies from two to ten or twelve ounces, and from half a pint to two quarts in twenty-four hours. If drainage is good, the cav- ity will empty completely at a paroxysm of coughing. Some cavities only drain when the patient is in certain po- sitions. The odor of the sputum or breath may be very offensive or it may not be noticeable. The following case was one of saccular dilatation of the lower branch of the left bronchus: Young woman aged 22. Had a prolonged attack of bronchitis when seventeen years old. Has had paroxysmal cough ever since with considerable expectoration. For last four years has had coughing spells in morning or evening when she would expectorate a quantity of mucus. For last two years these spells occur in the morning shortly after rising. By getting in the knee-chest position with the left shoulder as low as possible she is able to raise about six or eight ounces of sputum in a few minutes, and is then free from cough for the most of the day. The sputum is seldom offensive. The expansion of the left side is slow and some- what less than of the right. The fremitus is slightly in- creased below the level of the third rib, percussion note nearly normal, inspiration interrupted and wavy over a bronchiectasis. 173 space extending from the third to the fifth ribs in the anter- ior axillary line. Loud metallic rales are heard over the same area. Symptoms and diagnosis.—The physical signs ob- tained in cases of bronchiectasis show every possible varia- tion in accordance with the conditions with which it is asso- ciated. The percussion note may be dull if the cavity is full; if empty, the percussion note is raised, hollow or extra resonant according as the fibrosis is marked or not. Cracked-pot sound may be obtained in tubercular dilatations of the upper lobe. In cylindrical dilatation the respiratory sound will be tubular, blowing or hollow. Inspiration and expiration may be wavy in character. In saccular dilatation the breathing may be cavernous. There may be loud, gurgling rales. At the end of inspiration a short puff or blow may be heard, seemingly close to the ear (the "veiled puff" of Skoda). The wavy, irregular character of the in- spiration or expiration,and loud metallic crackles or gurgles over a limited area, are the most characteristic evidences of bronchiectasis. When a whole lung is full of small cavities the percussion note may be tympanitic and the auscultatory signs will be ill defined and low in pitch. Clubbing of the fingers and toes may be marked. The character of the sputum and the method of expec- toration generally suffices to distinguish bronchiectasis from emphysema. Pulmonary gangrene is generally sec- ondary to acute pneumonia or to tuberculosis. Examina- tion of the sputum is generally necessary to exclude tuber- culosis, though the course of the two affections is different. Tuberculosis may occur secondary to bronchiectasis. Lo- calized empyema opening into the lung may be confused with bronchiectasis, but its history, associated conditions of the lung and pleura, and puncture, when that is possible, will differentiate. Bronchiectasis is rarely, if ever, recovered from. It may end in gangrene, lobular pneumonia, fatal haemopty- sis, or some cardiac or renal complication. Treatment.—The indications are to maintain the gen- eral strength and nutrition and to disinfect the bronchial 174 bronchiectasis. tract. Superficially situated dilatations, especially of the larger tubes may be disinfected by inhalations of aristol, menthol, eucalyptus, creasote, guaiacol, tar or turpentine sprays. In a woman of 35, who had suffered from a bronchial dilatation in the anterior middle portion of the right lung, and who expectorated over a pint of mucus every twenty- four hours, disinfection of the expectoration, which was very offensive at times, was accomplished by the inhalation of a spray of aristol (3 per cent.). This was used every other day and made the trouble quite bearable. More energetic treatment consists in the continuous in- halation of coal-tar, creasote, guaiacol or cresoline vapor; intratracheal injections; and hypodermic injections of ster- ilized guaiacol or creasote. The vapor bath (Chaplin) is giyen in a small room or compartment clear of furniture. Commercial creasote is heated in a metal saucer over a spirit lamp until clouds of vapor fill the room. The pa- tient's clothes are protected by a cover, the eyes by goggles, the nares by cotton plugs, and the hair, in women, by a bag. The bath is given every other day at first, for fifteen or twenty minutes, gradually increasing to an hour every day. The bath produces violent coughing and profuse expectora- tion and sometimes vomiting. Intratracheal injections (Rosenberg) are made by inject- ing a dram of the solution into the trachea by means of a syringe, passing the nozzle of the syringe below the vocal chords. Menthol (5-10 per cent.), guaiacol (2 percent.), singly or combined, in oive oil, is recommended. By the hypodermic method, thirty minims of twenty-five per cent. solution of guaiacol or creasote in sterilized olive oil, may be used but does not appear to have any advantage over the inhalation methods of which the vapor bath is, according to Fowler, decidedly efficacious. Surgical treatment of a bronchiectatic cavitjr is seldom possible, though in some instances may be advisable. 175 BRONCHIAL STENOSIS. Geneial narrowing of the bronchial tubes resulting from inflammatory swelling, catarrhal, croupous or diph- theritic exudation is not included under this caption. ^Etiology.—Local bronchial stenosis arises from for- eign bodies in the bronchi, cicatricial contraction of bron- chial ulcers, sclerosis of the bronchial wall, malignant growths, aneurisms, tumors of the lung or mediastinum or hydatid tumors. Morbid anatomy.—Foreign bodies are apt to lodge in the right bronchus as that branch is more nearly in line with the trachea in most individuals. Articles several inches in length may, however, enter the left bronchus. Cicatricial stenosis are almost invariably of syphilitic origin. Gum- matous infiltrations of the mucosa break down, ulcerations result and the subsequent scars and thickened sub-mucous layer cause stenosis in one or several situations. In chronic disseminated tuberculosis there maybe stenosis of the tubes from thickening of the wall at points adjacent to a fibrous tu- bercular nodule, and also from the cicatricial wall which surrounds a cavity, involving also the entering bronchus (Powell). A stenosis effected gradually, tends to the pro- duction and retention of secretion behind the stenosis and results in dilatation of the tube and fibrosis of the surround- ing tissue. A cavity may become closed and its contents become cre- taceous or there may be intermittent discharge of its con- tents under pressure of accumulated secretions. In rapidly developed and complete stenosis there is collapse of the area of lung tissue supplied. Clinical history.—The history is variable. It is as- tonishing what tolerance there is for foreign bodies in the bronchi, provided they do not lodge at any of the specially sensitive points. A boy 15 years old, placed a blow pipe over a hat pin which was loosely stuck in the floor. (The pin was steel, about six or seven inches long and with a round ebony head.) In attempting to suck the pin out of the floor he drew it 176 bronchial stenosis. into his throat. He had a short coughing spell which soon subsided. The pin had disappeared. During the next day there was occasional coughing spells which were not severe. Examination showed slow expansion of the left lung, partial suppression of respiratory sounds in the same side wTith ex- aggeration of the respiration on the right side. There were no local signs of obstruction. Tracheotomy was performed and the pin found in the left bronchus. It was broken in the effort at extraction, the head and about three inches of the shank being obtained. Three days afterward the re- mainder of the pin was coughed up. No subsequent ill effects. Stenosis of the main bronchus will cause dyspnoea and there is more or less cough and expectoration which may be similar to that of bronchiectasis. The cough may be spasmodic or laryngeal in type. There may be pain if pulmonary collapse and dry pleurisy occurs. Tumors, aneurisms and syphilis will modify the history. Symptoms and diagnosis.— Partial stenosisgives rise to diminished expansion of the affected side, recession of the interspaces, costal margin, episternal and supraclavicu- lar regions;diminished vocal fremitus,resonance and respir- atory murmur. Rales and fremitus may be obtained over the site of the obstruction, and interscapular stridor may be heard. When the stenosis is of long standing or is com- plete, signs of bronchiectasis, pulmonary fibrosis, consolida- tion or collapse, with contraction of the side, will appear. The unaffected lung shows a greater or less degree of com- pensatory action with a corresponding intensification of the physical signs. When the examination leaves doubt as to the nature of the obstruction, the probabilities favor aneurism, medias- tinal growth, or cicatricial contraction from syphlitic gumma (Fowler.) In stenosis from aneurism and malignant growths the signs of these conditions develop early. Stenosis in association with consolidation and profuse expectoration may be mistaken for tuberculosis, empyema, or pneumonia. The diagnosis is sometimes very difficult. Treatment.—The treatment is largely symptomatic. In syphilitic or aneurismal stenosis, iodide of potassium in large doses should be used. Chloroform or oxygen may be used for the paroxysmal dyspnoea caused by aneurism. Powell recommends nitroglycerine for the same purpose. Expectorants may give some relieve, though as a rule they are of little use. CHAPTER VIII. ASTHMA. For clinical convenience and from an aetiological basis, several varieties of asthma have been recognized. It will be found that these different forms of the disease represent simply symptomatic variations of an affection which is neu- rotic in nature, spasmodic in occurrence, and is character- ized by a disturbed innervation of the bronchi which mani- fests itself in spasm (Liebert) of the bronchial muscles and is associated with spasm of the diaphragm and correlated respiratory muscular apparatus, resulting in a special type of dyspnoea. Asthma may occur at any age. According to Salter's statistics, thirty-one per cent, of the cases occurred during the first decade of life. It is generally stated that asthma is twice as frequent in males as in females, though if we in- clude only the cases of typical spasmodic asthma, it is evi- dent that it occurs as frequently in the one sex as in the other. The most individual clinical forms of asthma are the so- called idiopathic or true spasmodic asthma, bronchial asthma, dyspeptic, toxic, cardiac and hay asthma. These terms serve only to specify certain aetiological factors which are associ- ated with dyspnoea of asthmatic origin. ^Etiology.—Thirty-five per cent, of asthmatics give a history of heredity, most often from the paternal side (Thomson). Asthma is generally associated with a family tendency to bronchitis or other pulmonary disorders or to nervous affections. There may be a predisposition existing through one generation only, or a distinct history of hered- ity. Bronchitis (thirty-seven per cent.—Salter), fibroid tu- berculosis, epilepsy and various nervous disorders are fre- quently associated with asthma. 178 asthma. The exciting causes of the asthmatic paroxysm may be of central or peripheral origin. The central causes may be emotional or neurasthenic or may be due to toxic irritations from drug poisons, gout, diabetic or nephritic toxaemias {ure- mic asthma)or to intestinal toxaemia (the so-called humoral form of peptic asthma). Among the neurasthenic cases are those induced by fright, worry, the excitement of important social duties or the nocturnal cases which occur with darkness and can be obviated by keeping a light in the sleeping- room. The asthmatic attacks which occur directly after the ingestion of certain kinds of food and are accompanied by gastric disturbance, are probabally of peripheral origin and according to Salter are due to bronchial contraction produced through reflex irritation of the pulmonary filaments of the pneumogastric from irritation of the gastric terminations of the same nerve. The most frequent seat of peripheral irri- tation resulting in asthma is the bronchial tract. Climate, locality, moisture, dust, etc., are factors which are closely connected with bronchial susceptibility in the production of an asthmatic attack, but even here, nervous conditions seem, at times, to be potent in producing the prodromal bronchial symtoms which precede the asthmatic attack, as appeared in the following case: Farmer, 39 years of age. Lived in a dry, heal thy part of Iowa. For last ten years has suffered from asthma when- ever he visited any of the large cities. The attacks are pre- ceded by bronchia] symptoms. At home, on his own farm, is never troubled. Last year he built a new house three- quarters of a mile from his old residence but was unable to occupy it because of severe asthmatic attacks which ap- peared whenever he remained about the new house for a day at a time. The attack would be preceded by cough, wheezing and expectoration, beginning within two hours af- ter he reached his house and resulting in a paroxysm of asthma within eight or ten hours. When he returned to his old residence the attack would cease within an hour or two. The attack never appeared while the new house was in process of construction but only when he attempted to live there, and at the same time he could visit with im- punity a new barn in process of building on his old farm. asthma. 179 Laughing, coughing, sneezing, forcible breathing etc., induce asthma by over-stimulating the bronchial muscles (Wilson Fox). Gastro-intestinal irritations are next to bron- chial disturbances as a cause for asthmatic attacks. Very great variety and peculiarity is exhibited in relation to the various articles of diet which induce the attacks. Intestinal indigestion undoubtedly acts as a peripheral cause for asthma but must also be classed among the causes of toxic asthma. Constipation and flatulence may also induce at- tacks of asthma. Nasal irritation acting through the sensory branches of the fifth nerve is a frequent element in peri- pheral irritations resulting in asthma. Nasal polypi, ex- ostoses of the septum, turgescence of the cavernous tissue covering the turbinates and a thickening of this tissue, are given as a cause for asthma (Hack and others), and removal of this tissue has been insisted on by many. Undoubtedly many cases are due to nasal irritation and are relieved by its removal, but that mere turgesence of the tissues will in- duce asthma is not borne out by the clinical history of this very common condition of the nasal membrane, or by its re- moval in instance where it is the only nasal abnormality as- sociated with asthmatic attacks. Certain odors of animal or vegetable origin, dust, the pollen of flowers, the odor of certain drugs, may all induce asthma through the very erratic sensibility of some individ- uals to the irritation produced by these various substances. Unknown atmospheric conditions at certain seasons of the year and in certain localities induce asthma {hay asthma). Dental irritation in children may produce asthma. Uterine irritation from polypi, irritation of the pneumogastric nerve by neuroma or enlarged glands in the posterior mediastinum, vertebral exostoses or disease of" the pneumogastric center may bring about attacks of asthma. Cold to the surface of the body, especially to the feet, may induce an attack, or it may be associated with the disappearance of a cutaneous eruption. Eczema, psoriasis and urticaria (Sir Andrew Clark) are frequently associated with asthma, the latier especially, as it is essentially a neurotic affection. Morbid anatomy.—It is useless to review the various 180 asthma. theories regarding the exact condition of which the parox- ysm is the result. The nervous factor is generally recog- nized,—some condition of the nervous system by which stimuli, ordinarily of no moment, influence the vagus or sympathetic nerves. Whether the motor branches of the vagus are alone concerned (spasm of the bronchial muscles) or whether hyperaemia of the bronchial mucous membrane (Weber) from local vaso-motor paresis of sympathetic ori gin is also a factor, is a disputed question. The occurrence of both of these conditions most fully explains the various types of the disease. Bronchial spasm (Williams and others) is a main factor in the attacks, but some degree of spasm of the diaphragm (Wintrich, Bamberger) and. possibly of the inspiratory muscles (Jaccoud, See) is, in some instances, necessary to explain the clinical manifestations. There are no characteristic lesions of asthma. Various changes in the bronchi and pulmonary tissue may occur, and, in severe and prolonged cases, dilatation of the right side of the heart will develop. The effect of the bronchial obstruction is to cause increased inspiratory effort with still greater difficulty in expiration; as a result there is gradual increase in the amount of residual air in the lungs and over- distention of the alveoli. The amount of expectoration in asthmatic attacks is very variable. In the bronchial type it may be abundant. Generally, towards the end of the paroxysm, expectoration is more or less free and consists of semi-transparent, gray- ish mucus in pellets—"boiled tapioca" expectoration. Spiral corkscrew threads of mucin (Curshman's spirals) and pointed octahedral crystals (Charcot—Leyden crystals) are found in the sputum. The latter are supposed to be a com- bination of phosphoric acid with an organic base. While spirals and crystals are not found as frequently in other pulmonary affections as in asthma, they are in no way char- acteristic of the latter affection. Clinical history.—Very great variation is shown in the history of the different types of asthma. When devel- oped in childhood it may disappear in time. The longer the duration and the more frequent the attacks, the greater ASTHMA. 181 will be the degree of associated emphysema and the less likely the probability of recovery. There may be a history of various peculiar and interesting exciting causes or there may be no exciting cause ascertainable. There is a wide range of associated diseases and morbid states, or, there may be absolutely no local or general condition discoverable even in the most severe attacks of the true spasmodic form of the disease. The attacks may occur only at certain seasons of the year. They may be weekly, monthly or yearly or be separ- ated by several years. Periodicity is a marked feature of nearly all forms of asthma. The spasmodic type is apt to come on at night after a few hours sleep. There is apt to be a feeling of somnolence or depression preceding the at- tack, with or without bronchial symptoms. In bronchial asthma there is every degree of combination of bronchial and asthmatic symptoms. The dyspnoea may be more or less continuous and the asthmatic feature merely an exacer- bation when some exertion overtaxes the weakened heart and distended lungs. Many of these cases, while termed asthmatic, will hardly come under that designation. The aetiological relations of asthma give many interesting points in the clinical history of the various types of the disease which are not necessary to recount. Symptoms and diagnosis.—In the markedly spasi modic forms of asthma the attacks may come on suddenly and without warning, especially at night, though there are generally some premonitory symptoms such as depression or restlessness, wheezy breathing, abundant, pale, limpid urine, constriction about the chest and some dry cough. The subject may be wakened from sleep by difficult breathing which soon becomes severe dyspnoea. He sits up, leans for- ward, breathes slowly and laboriously. The face is slightly congested or pale, there is profuse perspiration and an anxious^ careworn expression. The shoulders are rounded and ele- vated and the hands grasp a chair or table in order to fix the scapular and humeral attachments of the chest muscles. The jugular veins are distended and the muscles of the neck are prominent. The whole chest is lifted during inspiration 182 ASTHMA. which is, nevertheless, short and inefficient. Expiration is three or four times its usual length, but is more difficult and inefficient than inspiration and the chest becomes more or less fixed in a condition of inspiratory distention. There is no pause after expiration, inspiration beginning immediately, suddenly and forcibly. The respiratory rate may not be in- creased; the pulse is rapid and feeble and may disappear during inspiration (pulsus paradoxus);the temperature is nor- mal or depressed; and the patient, while in the severest dis- tress, is not alarmed. Persistent itching of the chin, ster- num, or between the scapulae may be present during the earlier part of the paroxysm (Salter). The thorax is much distended; the ordinary clothing may not meet around the chest by two inches. The dia- phragm is lowered as much as possible, the supra-clavicular fossae recede during inspiration and there is absence of the usual areas of cardiac and hepatic dullness with epigastric pulsation. The percussion note is hyper-resonant, vocal fremitus is absent, the vesicular murmur is feeble or absent, or is covered by high-pitched sibilant rales and sonorous rhonchi which are very changeable as to location. If bron- chitis be present the rales may be more or less liquid or crackling in character. The long, wheezing expiration and the accompanying dry rales are positive proof of bronchial spasm. Every possible gradation as to severity and dura- tion of attack is met with in the true spasmodic form of asthma, as well as various degrees of bronchial symptoms which remain after the attack in the bronchitic form. Af- ter an attack of purely spasmodic asthma has subsided there may not be a single abnormal sign about the patient's chest. In severe cases cyanosis may be marked and capillary re- tinal haemorrhages may occur (Walsh). The urine is abund- ant, pale and of low specific gravity and the solids are di- minished (Ringer). The dyspnoea of asthma is distinguished from that of laryngeal or tracheal stenosis by its expiratory, instead of inspiratory, nature and by wheezing instead of stridor. Laryngeal dyspnoea is accompanied by increased movements of the larynx and by diminution in the size of the chest and ASTHMA. 183 elevation of the diaphragm. In cardiac asthma there is rapid, panting or sighing breathing and the expiratory act is. not prolonged. In aneurismal dyspnoea there is tracheal tugging, localized dullness, pulsation, and brassy cough as concomitant signs, with, perhaps, signs of pressure on the bronchus,—diminished breathing in the left upper lobe, aphonia from vocal paralysis. Treatment.^-Asthma rivals bronchitis in the number of medicaments employed for its relief. This is owing to the neurotic nature of the disease and the consequent vary- ing aetiological factors. These factors must be carefully studied in the individual case and the treatment directed ac- cordingly. The patient's knowledge and observation of his own case is often most useful in directing the treatment. Relief of the paroxysm in no wise influences the contin- uance of the disease. The remedies used for the relief of the paroxysm are all neurotics which have only temporary symtomatic effects and if the disease is to be cured it must be done through the administration of constitutional remedies such as iodides, arsenic, iron, strychnia, quinia, cod liver oil, etc. These remedies are to be persisted in for long periods and are much aided by controlling the attacks in the mean- time by the neurotics. Iodide of sodium, strychnia and fluid extract of euphorbia pilulifera is a combination whose prolonged administration has given me much satisfaction, especially in the bronchitic form of asthma. Climate is an important factor in the treatment of the asthmatic. Here each case is a law unto itself, very strik- ing peculiarities being observed in relation to climate. Gen- erally speaking, a moderately elevated, dry climate is best, particularly in the pine or fir regions. It is generally stated that the smoky, gas-laden air of large towns is agreeable to asthmatics. This may be true of the purely spasmodic form of asthma, but in my experience is not so of the bron- chitic form in which such cities as Pittsburg, in spite of its comparatively favorable latitude, elevation and location in the petroleum belt, is entirely unsatisfactory as a residence for asthmatics with branchial symptoms. Chicago is to a like extent objectionable because of the rapid and radical 184 ASTHMA. changes in temperature and moisture. Northern New York Wisconsin, Michigan, Minnesota, Idaho, Wyoming, etc., are particularly favorable localities for the asthmatic. In the spasmodic form due to susceptibility to atmospheric conditions incident to certain seasons of the year, and in hay asthma, asojourn at the seaside is often beneficial. Many of these cases, especially of hay asthma, are entirely free from attacks while at Mackinac Island, a locality that, while en- tirely surrounded by water, has a particularly dry, exhilar- ating atmosphere. Cases of asthma which have developed marked emphysema must not be sent to a high altitude be- cause of the resulting strain on the right side of the heart. In preventing attacks of asthma each case must be treated symptomatically. Peptic asthma involves the treat- ment of every variety of dyspepsia. In addition to dieting, the administration of twenty grains of strontium bromide and ten grains of sub-carbonate of bismuth, three or four times daily, is of great benefit. Flatulence, constipation, uterine irritation and nasal irritation must be relieved. In the cases exhibiting great nasal sensibility to odors, gases, temperature etc., with hyperaemia or turgescence of the tur- binate coverings, it is best to treat them persistently with soothing, cleansing and disinfecting sprays or steam inhal- ations. In the absence of abnormal bony or soft tissue growths or septum deviations, operations for the removal of tissue or cauterizations are not advisable. The ultimate re- sults are not nearly as good as many rhinologists have in- ferred from the immediate effects of such treatment. For nocturnal attacks of spasmodic asthma, thirty grains of potassium bromide and a dram of Hoffman's anodyne, at bed time, will often prevent attacks (Thomson). Iodide of so- dium or potassium and arsenic are the most useful prophy- latic drugs. Tincture of lobelia and fluid extract of stra- monium are useful adjuvants. The iodides should be gradu- ally increased until a fairly large daily dose is given with- out producing physiological effects. Hot coffee, a liberal drink of whisky, the fumes of burning nitre paper (blotting paper soaked in a solution of nitrate of potash,gr. xxx ad Si) or tobacco will at times ward off an attack of asthma. Sker ASTHMA. 185 ret recommends 5 to 10 grains of citrate of caffein at bed time for the prevention of morning attacks, and five grains every four hours during attack in bronchial asthma. The vapor of turpentine or ammonia, or painting the pharyngeal wall with a solution of ammonia (Ducros, Trousseau) or swabb- ing the nasal passages with a solution of cocaine, may abort attacks in cases of nasal and pharyngeal irritation. In bronchial asthma, besides the palliative treatment, the following is useful: n Natrii iodidi, 3ii-iii Tr. nucis vom., 3iv Tr. belladonna;. 3i-ii Spts. eth. sulp. co., fiss m. Elix. q. p. ad §vi Sig. 3ii every 6 hours. For the relief of the paroxysm of asthma we rely al- most entirely on the neurotics and stimulants. Belladonna, hyoscyamus, stramonium, duboisia, the nitrites (amyl, ni- troglycerine, sodium), iodide of ethyl, opium and ether are the most serviceable. Much relief is obtained from the fumes of the numerous asthmatic cures, all of which contain more or less of the first four drugs enumerated.* The fol- lowing is a good formula for a powder for aslhma: Belladonnae f°l->] Stramonii fol., i z- Lobelise fol., j Silphii lacin., fol., J M. Potasii nitratis §ss. Fiat pulv. Thomson recommends full doses of tincture of bella- donna or an injection of atropine at the nape of the neck to arrest the asthmatic paroxysm. Nitroglycerine and chlor- oform are useful for an attack but the latter is more or less *Candles designed for the administration of stramonium by inhalation (candelaa stramonii) are made of 150 parts of pulverized stramonium leaves, 70 of potassium nitrate, and three of balsam of Peru. Stramonium cigarettes (cigarettae stramonii contain one gramme each of stramonium leaves. Compound stramonium ciga- rettes (cigarettae stramonii com positaB) contain one gramme each of a mixture of 3 grammes of stramonium leaves and 1 gramme each of the leave* of belladonna a'nd tussilago farfara. 186 PULMONARY EMPHYSEMA. dangerous. A few drops of pyridine inhaled from a hand- kerchief or butter plate is often efficacious. The most efficient remedy for an attack of spasmodic asthma is a hypodermic injection of morphine (£ gr.). The combination with atropine is advisable. There is little dan- ger of drug habit and the best relief is obtained in the purely spasmodic cases. Morphia should not be given in cases of bronchial inflammation with dyspnoea and only in small doses, if at all, to cases of bronchitic asthma with pronounced bronchial symptoms. The general management of the asthmatic involves much symptomatic treatment not necessary to detail here, but the more closely the individual case is studied the better will be the results. PULMONARY EMPHYSEMA, In pulmonary emphysema there is dilatation of the alve- oli of the lungs and atrophy of the alveolar walls. Two forms are usually described; a vesicular, and an interlobular or interstitial form. The latter is entirely distinct from the former to which reference is always made by the unqualified term emphysema. There are four clinical varieties of emphysema, which, while not constituting distinct forms of the disease, are yet sufficiently well marked to merit clinical division. They are general emphysema (volumen pulmonum auctum, chronic hy- pertrophic emphysema, large lunged emphysema,—Jenner), senile emphysema (small lunged emphysema, atrophic emphy- sema, senile atrophy of the lungs), localized emphysema (com- pensatory emphysema) and acute emphysema (dilatation of the lungs). Pathologically the last variety is not a form of emphysema, as there is no atrophy of the alveolar walls but simply acute dilation of the alveoli which may or may not be recovered from. Emphysema may occur at any age, but is most common during adult life. It is more frequent in men because of greater exposure to predisposing conditions. ^Etiology.—The distention of the air spaces is the primary change and precedes the atrophy of the alveolar walls. In the atrophic form it is possible that this order PULMONARY EMPHYSEMA. 187 may be reversed. Exclusive of compensatory emphysema it is probable that failure of nutrition (Jackson, Waters) is a frequent element predisposing to the development of em- physema. The increased air tension which dilates the spaces is brought about by increased expiratory force (Mendelssohn, Jenner) which first dilates those portions of the lungs which are in contact with the most yielding portion of the chest walls, i. e., the apices, anterior border of the upper lobes and the margins of the base of the lungs. The inspiratory theory (Laennec, Gairdner,Rindfleisch) is not now accepted as the general cause of emphysema, though in the produc- tion of localized emphysema the inspiratory cause is un- doubtedly an important factor. Bronchial obstruction, cough and muscular effort are the most important factors in producing emphysema. Occu- pations involving straining, lifting, playing on wind instru- ments tend to produce the disease. Chronic bronchitis, asthma, whooping-cough, laryngeal, tracheal and bronchial stenoses cause general emphysema. Localized emphysema may result from any disease of the lungs or pleurae which limits the action of a portion or the whole of a lung. Com- pensatory emphysema of an entire lobe or lung may thus de- velop or localized emphysema may develop in the lobules adjacent to areas of pulmonary atelectasis, infarctions or consolidation. In those cases where emphysema is not accompanied by or precedes the development of, those mechanical causes already enumerated, the cause rests in nutritive changes in the lung texture which destroys the elasticity of the lung and renders it unable to withstand the ordinary air pressure incident to the process of respiration. Interlobular emphysema occurs from wounds of the lung, rupture of the alveoli from overstrain, as in coughing, in connection with laryngeal diphtheria especially after tra- cheotomy, or in advanced cases of general emphysema from the rupture of air sacs. Morid anatomy.—The distention of the air passages begins in the inter-alveolar spaces (Rindfleisch). This in- 188 PULMONARY EMPHYSEMA. crease is at the expense of the alveoli opening into the in- fundibular cavities in relation to which the alveoli are nor- mally about one third smaller. The dilatation maybe primar- ily in the alveoli. The pressure diminishes the blood sup- ply to the alveolar walls and their epithelium undergoes fatty degeneration. The septa between the alveoli become partially or completely destroyed and the walls between adja- cent infundibular, or alveolar spaces give way, the spaces coalesce and form round cavities of varying size which may be traversed by remnants of vessels or wall. There may be more or less connective tissue development, especially in connection with cases of chronic bronchitis. These processes involve considerable destruction of the pulmonary capillary circulation. According to Rindfleisch communication is established between the pulmonary and the bronchial veins which relieves the tension in the pulmon- ary artery but does not aerate the blood. The over dis- tended lungs lose their elasticity and the inspiratory trac- tion force exerted on the circulation is lost. This, together with the obliteration of the capillary vessels, increases the pressure in the venous system and the right heart suffers. Pressure in the vessels of the bronchial wall causes conges- tion of the bronchial membrane. The bronchi may be di- lated, particularly in localized emphysema, or they may be obliterated or run as fibrous cords across the emphysematous sacs. The bronchial walls are usually thickened, though in atrophic emphysema they may be thinned. The lungs are maintained in the position of ordinary in- spiration. The diaphragm is lowered and the heart dis- placed downward and becomes more nearly horizontal. The hypertrophy of the heart is, in time, followed by dilatation, tricuspid regurgitation, dilatation of the right auricle and the usual congestions of the liver, stomach, kidneys, brain, and oedema of the tissues. When interlobular emphysema occurs alter trach- eotomy, the air passes behind the deep cervical fascia into the chest. From the mediastinum it may pass along the tissue around the bronchi and blood vessels and appear on the surface of the lung as small beads or bubbles PULMONARY EMPHYSEMA. 189 of air beneath the visceral pleura. Interlobular emphysema from any cause shows itself as small air bubbles in the in- terstitial tissue of the lung and in rows beneatn the pleura. Pneumothorax and pulmonary collapse are the most fre- quent associated lesions of interlobular emphysema. There may also be general subcutaneous emphysema of the neck, face and arms or trunk. In general emphysema when the chest is opened the lungs do not collapse. The margins are in contact with the sternum and the apices fill the suprascapular spaces. The auricular process of the left upper lobe occupies the prae- cordial space, the diaphragm is depressed, the lung tissue is soft, of a grayish color,somewhat pigmented, non-crepitant and may pit on pressure. The surface may have a frothy appearance or large rounded blebs may occupy the margins of the upper lobes, or the bases. These air sacs may be pedunculated. The lung tissue is dry and bloodless except at the base where it may be cedematous or congested if bron- chitis or weak heart have been present. Pleural adhesions are not so frequent as in other diseases of the lungs. Ather- oma of the pulmonary artery is frequently present. In senile emphysema the lungs are small and collapse readily and are deeply pigmented. The vesicles are fused from atrophy of the septa. The margins may be much di- lated and large air sacs may be present. The bronchi are dilated and their walls thin, membranes congested and they may contain puriform fluid. Collapse and oedema of the posterior portions of the lower lobes are frequent. The chest is rigid and small and the lower ribs oblique and in contact with each other. Senile emphysema is associated with general atrophy and wasting of the bodily tis- sues. Local emphysema is secondary to some disease of the lungs, bronchi or pleurae,areas of arrested pulmonary tuber- culosis, cavities, bronchial dilatations, atelectasis or fibroid areas in the lung or pleuritic adhesions and indurations. The apices and the posterior and upper portions of the lower lobes are frequent locations for this form of emphysema. Local areas of fibroid or collapsed lung may be surrounded 190 PULMONARY EMPHYSEMA. by, or imbedded in, emphysematous tissue. Large air cavi- ties are usually absent in compensatory emphysema. The so-called acute vesicular emphysema is simply anover- distention of the alveoli. It may result from acute bronchi- tis, violent inspiratory efforts, partial stenosis of the trachea or bronchi by collapse of the lung increasing the strain on the remaining portion, asphyxia from any cause. While it occurs most often when the above causes are fatal, it also occurs in non-fatal cases and may be recovered from. Clinical history.—The history of emphysema is in nowise characteristic. The insidious advent of the disease accustoms the subject to the altered conditions of respira- tion and there is little complaint until the condition becomes severe. The history mainly refers to the symptoms caused by the associated affections, particularly the bronchitis, and it is quite common to have patients who are markedly dyspnoeic remark that if the cough were better they would get along all right with the breathing. The dyspnoea is always present, is likely to be paroxysmal and is increased by exertion or interference with the action of the diaphragm by flatulence. In children the history may point to an attack of whooping-cough as the origin of the dyspnoea. In ad- vanced cases orthopncea is present and the patient may not be able to lie down. Cyanosis may be more marked than the degree of dyspnoea would lead us to expect. Haemoptysis may occur and may be severe though usually unimportant. Cough and expectoration are related to the accompanying bronchitis and are particularly troublesome in cold wet weather. The appetite is poor, digestion bad and the o-en eral nutrition much below par. Senile emphysema is associated with a history of gen- eral senile atrophy. The ability for exercise is limited and the respiratory necessities consequently less. Dyspnoea is therefore not marked. Paroxysmal dyspnoea is uncommon though the associated bronchial inflammations may be at- tended with shortness of breath. Local and acute emphy- sema have only such history as is associated with the condi- tions which cause them. With a history of severe disease of one lung or pleura with loss of functional ability we may PULMONARY EMPHYSEMA. 191 have a general emphysema of the opposite lung which is essentially compensatory in nature and yet may ultimately differ in no way from the ordinary morbid developments in the large lunged variety of emphysema. Sudden and urgent dyspnoea following tracheotomy, with or without symptoms of pneumothorax, or severe dyspnoea after violent attacks of coughing or in advanced stages of general emphysema, may indicate the development of the interlobular form of emphysema. Symptoms and diagnosis.—The symptoms of emphy- sema are generally modified by those of the associated le- sions of the chest. The dyspnoea, cough, cyanosis, general appearance of the patient and the conformation of the chest are characteristic in the well developed forms of the disease. The general symptomatology of the so-called hypertro- phic form of the disease is well illustrated in the following history of an out-door clinic case: M. D., wood turner, aged 49. Always healthy until five years ago when he had a severe attack of bronchitis during the winter. The following winter had another attack of bronchitis and since then has suffered from more or less dyspnoea and cough with frothy expectoration. He is usually worse during the winter months. Has never had any bloody expectoration. At present suffers from dyspnoea which, at times, is paroxysmal and distressing and is always worse on exertion. Cough is more or less troublesome and is attended with scanty, viscid expectoration. Has no pain but there is a sense of constriction about the lower portion of the chest. The pulse is small, weak and at times irregular. Tempera- ture normal, appetite poor, digestion bad, sleeps fairly well. The patient is slightly cyanosed. The cervical veins are distended but there is no jugular pulsation beyond that conveyed from the carotid artery. The facial lines are dis- tinct and his face has a careworn expression. The alae nasi are widened, the lips thick, the eyes prominent and the con- junctivae injected. The finger ends are clubbed. The abdo- men is prominent, the liver and spleen lower than normal and somewhat enlarged from congestion. Thore is no oedema or ascites. His chest is enlarged in all its diameters, paricularly in the antero-posterior. It is rounded (barrel shaped) in form with the shoulders elevated and the scapulae rotated some- 192 pulmonary emphysema. what on their axes, the posterior borders and lower angles standing well out from the chest wall. The whole chest looks shorter though the vertical diameter is increased by downward displacement of the diaphragm, and the oblique diameter by the more horizontal position of the ribs and the widening of their interspaces. The clavicles are well for- ward and the inspiratory muscles of the neck are prominent and tense. The junction of the maubrium with the body of the sternum (angulus Ludovici) is prominent and the lower portion of the sternum slightly depressed. The costal angles are widened. The suprascapular depressions are effaced, the upper intercostal spaces are even with the ribs but the lower spaces are depressed and there is inspiratory reces- sion of these spaces below the fourth interspace; when he coughs the spaces bulge slightly. The respiratory excur sion of the chest is limited and the expiration is much pro- longed. The heart impulse is absent from the usual situa- tion and there is systolic epigastric impulse. A few dilated veins are present along the anterior and lateral portions of the chest corresponding to the attachments of the diaphagm. On palpation we find the fremitus barely perceptible over the upper chest. Below the level of the fifth rib in the axillary line the fremitus is increased on both sides. The cardiac impulse is not felt in its usual situation. The per- cussion note ishyper-resonant,low in pitch, empty in quality and of great intensity even over, the areas of increased frem- itus and is not appreciably modified by inspiration or ex- piration. The resonance extends in the mammillary line to the eighth rib on the left and to the sixth rib on the right. Behind it extends to the eleventh rib. The respiratory mur- mur is feeble and suppressed over the upper portion of the chest, below the fourth rib it is somewhat harsh. The expir- ation is about three times as long as the inspiration and over the areas of increased fremitus it is slightly higher pitched. Laterally and in front, crackling rales are heard below the fourth ribs. Behind, at the bases, the rales are finer. The heart sounds are weak and distant; the first sound, having lost its muscular tone, is short and indistinct. The second sound, over the pulmonic area, is markedly accentuated. In senile emphysema dyspnoea is usually not severe ex- cept during exertion, bronchial and asthmatic symptoms are not very pronounced. The subjects are emaciated. Venous congestions, cyanosis, clubbing of the fingers, displacement of the heart and diaphragm are absent. The barrel shape of the chest is not marked, though the lateral diameters are PULMONARY EMPHYSEMA. 193 diminished. The ribs are oblique and the interspaces are wide above, while below they are very narrow. Inspiration is shallow and there is inspiratory recession of the inter- spaces. The percussion note is low in pitch but clear in tone and empty in quality. The respiratory sounds are feeble and the expiration but moderately prolonged. There may be rales at the base of the lungs. In localized emphysema the signs are modified by the conditions which cause it. These conditions generally re. suit in more or less condensation of local areas of lung tissue largely from interstitial increase of tissue. These areas, surrounded by emphysematous tissue, will give marked in- crease in fremitus with a low. pitched percussion note of empty quality. This apparent anomaly in physical signs is due to the more dense tissue being surrounded with alveoli in which the air tension is greatly increased. When signs of local emphysema are present in an apex of the lungs they may be due to compensatory emphysema developing as a result of the changes incident to a healed or quiescent local tuberculosis. Enlargement of a portion or the whole of a lung as a re- sult of extensive disease or contraction of the opposite lung may, according to Fowler, be regarded as a true hypertro- phy,—if the functional activity be increased (puerile breath- ing), or as emphysematous if the activity be decreased (feeble breathing with prolonged expiration). Acute vesicular emphysema is characterized by the signs of marked distention of the chest with air, urgent dyspnoea, perhaps cyanosis and such additional signs as may attend the cause of the attack. The symptoms of interlobular emphysema are dimin- ished respiratory sounds in connection with urgent dyspnoea. Signs of pneumothorax and collapse of the lung, or perhaps of general subcutaneous emphysema, may be present. The diagnosis of emphysema is usually not difficult. In pneumothorax the affected side is enlarged, the spaces ob- literated, movement is restricted or absent and is exagger- ated on the opposite side. The percussion note is more amphoric or tympanitic in quality and the breath sounds 194 PULMONARY EMPHYSEMA. more indistinct than in vesicular emphysema. It may often be difficult to estimate the exact status of cases of combined emphysema, bronchitis and failure of the right ventricle, but treatment will often aid us in this respect. Aneurisms of the transverse portion of the arch of the aorta may pre- sent bronchial and dyspnceic symptoms, but the presence of local dullness or the absence of hyper-resonance together with the brassy cough and tracheal stridor, will aid differ- entiation. Treatment.—Emphysema, when atrophy of the septa has occurred, is not a curative affection. The future of the case must be judged by the condition of the heart and gen- eral nutrition. Most of the patients are under treatment for some of the associated affections, for, to the emphysematous state itself, they become largely indifferent because of its gradual development and progress. The direct treatment of the emphysematous condition by means of compressed air baths (Williams) or by the in- spiration of compressed air and expiration into rarefied air (Waldenburg), while productive of increased comfort and some benefit to the patients, is not directly curative and in- volves the application of troublesome methods of mechanical treatment. Emphysematous subjects should seek such localities as furnish atmospheric conditions and air pressure suitable to their impaired respiratory power. Many cases do well at the sea level though the changes in temperature in winter and the dampness may aggravate their condition. The tendency towards bronchitis and asthmatic dyspnoea renders a warm, dry climate the most advantgeous. The altitude must be decided by the condition of the right heart and the respiratory capacity. As failure of the right heart is the chief thing to guard against, a permanent residence at a considerable altitude is dangerous. Tne general nutrition of the patient must be increased by diet and tonics. Iron, arsenic and strychnia are the best tonics. Iodide of potasfium in from five to ten grain doses is very useful. Iodide of sodium may be used in place of the potassium salt. A useful combination is the fol- lowing: PULMONARY collapse. 195 3 Ferri arsen., gr. i. Ext. nucis vom., gr. £. Peps, purse gr. i. m Ext. cascara sag., • gr. |. The various remedies already detailed for use in bron- chitis and asthma are to be used when these conditions are associated with emphysema and as these are the complaints with which patients come for relief, such remedies consti- tute a large part of the therapeutic measures called for in emphysema. The functions of the liver and bowels must be watched. Occasional doses of mercurials are of great ser- vice at times. When congestions and oedema appear, digi- talis is to be used as in other conditions attended with ataxia of the heart. Strychnia in large doses is very useful in these cases. With paroxysmal attacks of dyspnoea morphia should be used with caution if there is much bronchitis present. With marked cyanosis from an overtaxed right ventricle venesection may be indicated. PULMONARY COLLAPSE. Collapse of the lung may be congenital (atelectasis) or acquired. The term atelectasis was formerly reserved for cases of partial or complete failure to expand the lungs at birth, while collapse referred to the airless condition of lung tissue which had exercised function. The two terms are largely used synonomously at present but we shall use the unqualified term collapse as referring to the acquired variety. Undoubtedly, in some instances of the congenital form, the term atelectasis is etymologically more correct. ^Etiology.—Congenital collapse occurs from obstruc- tion of the bronchi by mucus, meconium or the pressure of enlarged bronchial glands. Enlargement of the abdomen may cause collapse by interfering with the action of the diaphragm, or collapse may occur from congenital disease, muscular weakness,or from mechanical injury during labor. Collapse of the lung occurs from bronchial obstruction, from bronchitis or broncho-pneumonia, especially in connection with whooping cough or measles, from diphtheria of the 196 PULMONARY COLLAPSE. bronchi or trachea, fibrinous bronchitis, bronchiolitis, cedema of the lungs, thoracic aneurism, mediastinal tumors, bron- chial stenosis, bronchiectasis (from mucus obstruction), pul- monary embolism, thrombosis and infarction. The various diseases and morbid growths of the nasal, pharyngeal or laryngeal passages may, if sufficiently severe or prolonged, cause collapse of the lung. Pressure on the lung from pleural effusions or on the diaphragm from abdominal dis- tention may cause collapse. An opening into the pleural cavity is always followed by more or less collapse of the lung. Pneumothorax and pyopneumothorax are followed by collapse more or less complete. Great weakness or paralysis of the inspiratory muscles or of the diaphragm, such as occurs in severe or prolonged fevers or in weak and badly nourished,rachitic children, may cause collapse of the lower portion of the lungs. Weakness of the intercostal muscles, with partial collapse of the lower portion of the lungs during the first year of life, produces contraction of the lower portion of the chest with "pigeon breast," and other deformities of the costo-sternal articulations. The generally accepted view as to the mechanism of the production of collapse of the lung is that it is due to absorp- tion of air from portions of lung tissue whose bronchi are obstructed by secretion or other causes. The absorption occurs through the agency of the blood vessels, alveolar walls and,the elasticity of the lung tissue (Lichtheim). In collapse occurring without bronchial obstruction, it is sup- posed to be due to paralysis of the inspiratory muscles (Fagge, Pearson—Irvine). Morrid anatomy.—Areas of collapse are usually more marked in the surface of the lung than in the deeper parts. The margins of the lower lobes along the vertebrae, the mid- dle lobe of the right lung and the peripheral portions of the upper left lobe, are the usual sites for collapse. The col- lapsed areas present as irregular, depressed, bluish-red or violet colored masses which are smooth and resistant, do not crepitate, and which sink in water. Serum may be ex- pressed from the tissue, which is usually somewhat con gested. If the collapse has not existed very long the area PULMONARY COLLAPSE. 197 may be dilated by insufflation, when it will be red in color and crepitant. Numerous small areas or large tracts may be affected according to the extent of the cause. Incom- plete collapse of a lung,as from pleural effusion,the organ is heavy, airless, of a bluish-gray color and less shiny than the lobulated variety. A collapsed portion of lung may regain its normal con- dition, may become cedematous and congested (splenization), or, in compression collapse, when comparatively large areas are involved, the air is gradually expelled or absorbed and the tissue becomes dry, tough and flesh-like (carnification). When the collapse is permanent the alveoli are compressed and obliterated. Interstitial tissue developments occur. The small bronchi may dilate and contain pus. Atrophic changes may occur and a local mass of indurated tissue may remain. Extensive congenital collapse may cause sufficient ob- struction of the pulmonary circulation to prevent the closure of the foramen ovale and the ductus arteriosus and cause dilatation and hypertrophy of the right heart. Clinical history. —In congenital collapse there may be a history of sleepiness and inability to nurse, feebleness and arrested growth, coldness, lividity; cyanosis, asphyxia or convulsions may be present if some congenital lesion of the circulation complicates the case. The history of col- lapse of the lung is the history of its aetiological fact- ors. Symptoms aind diagnosis.—In congenital collapse the child is feeble, cries weakly, the temperature is sub-normal, the breathing slow and feeble. There is inspiratory reces- sion of the interspaces and the lateral regions of the chest. The lower chest is contracted and the sternum prominent. The breath sounds are feeble all over the chest and,perhaps, absent at the base except when the child cries or coughs. Fine rales may be heard at the base. If much cyanosis is present the child will probably not live many days. Collapse of the lung may be attended by sudden and severe dyspnoea, rapid and feeble pulse, cyanosis and un- consciousness, or, if the area be small, no particular symp- 198 PULMONARY collapse. toms may be present. Inspiratory retraction of a portion of the chest wall, dullness on percussion or a hard, tympanitic note if emphysematous patches have developed; feeble re- spiratory sounds; tubular or bronchial breathing; fine rales heard only after a deep inspiration where breath sounds are absent, (partial collapse), are the principal signs of collapse of the lung. These will be associated with the various physical evidences of the pleural and pulmonary causes of collapse. Collapse from pleural effusion may be mistaken for pneumonia. There may be tubular breathing but it is more distant, the vocal sounds and fremitus are Jess marked or absent, as are the fever and sputa of pneumonia. The per cussion note is more flat, and position may alter the level of the flatness. In miliary tuberculosis the previous history of cough,fever, loss of flesh,and the family history, will aid in differentiating. Treatment.—In atelectasis in the new-born the fauces must be cleared of mucus. Breathing may be established by placing the child in a hot bath and splashing it with cold water, or switching it with a wet, cold towel. Artificial res- piration, insufflation of the air passages, irritation of the fauces, stimulating liniments, etc., may be used. The child should be kept warm under all circumstances. If the incu- bators now in use in maternity hospitals are not to be had, the child should be well wrapped in cotton-wool when not in the warm bath. Pulmonary collapse from bronchial obstruction and pul- monary inflammation is to be treated with the remedies ap- plicable to such causes. It is sufficient to mention the pos- sible danger of opium in bronchitis or bronchiolitis in adding to the possibility of collapse from mucus obstruction, and also to the advantage of emetics, in the same conditions, in preventing collapse by the removal of secretion, though they must be given with judgment. In collapse from paralysis of the muscles of inspiration and of the diaphragm, artificial respiration may be of con- siderable benefit. In collapse secondary to indurations of lung tissue, thickening of the visceral pleura, pleural adhe- sions and effusions; pulmonary gymnastics, deep breathing, compressed air inhalations, residence at a moderately high- altitude, are some of the means of promoting lung expan- sion and developing compensation, if not actual restoration of function in the collapsed lung. CHAPTER IX. PULMONARY CONGESTION. The bronchial circulation is subject to the same modifi- cations as occur in other portions of the general circula- tion. The mechanism of circulatory changes in the pulmon- ary vessels has, however, caused much discussion. It is gen- erally conceded that the pulmonary vessels are influenced by the vaso-motor nervous system and that congestion of these vessels may result from vasomotor disturbances. Ob struction to the passage of blood through the left side of the heart, obstruction to the general circulation, and degen- eration of the blood may induce congestion of the pulmon- ary circulation. Congestion of-the lungs may be acute (active) or chronic (passive.) The so-called compensatory hypercemia is a form of active congestion. Varieties of chronic congestion are brown induration and hypostatic congestion or splenization. ^Etiology.—Active congestion occurs in the first stage of pneumonia and in all inflammatory affections of the lungs; in rapid heart action from violent exertion or excitement; from vaso-motor paresis; from drinking large quantities of alcohol; from sudden change in air pressure in croup, laryngitis or whooping-cough ;from the rarefied air of high altitudes or from the sudden removal of large pleural ef- fusions. Active congestion also occurs in connection with infarctions of the lungs, capillary embolism of the pulmon- ary arteries, acute dilatation of the heart, acute myocardi- tis in connection with acute diseases and in rapidly devel- oped cardiac failure in chronic cardiopathies. Chronic congestion results most frequently from the ob- struction incident to chronic heart lesions, particularly mi- tral disease. It occurs in typhus fever, typhoid fever or measles (splenization), or in any disease marked with severe blood changes. In bed-ridden subjects, from any chronic disease, congestion may develop in the lowest portion of the 200 PULMONARY CONGESTION. lungs (hypostatic congestion). In mitral disease the conges- tion is especially liable to assume the characteristics of brown induration. Morbid anatomy.—In acute congestion the pulmonary capillaries are prominent, the alveolar epithelium becomes swollen and granular and may proliferate. Red blood cor- puscles may be found free in the alveoli. The lung tissue is red and contains an excess of blood. Red, frothy fluid flows from the cut section. (Edema may be present. Ac- cording to Fowler the color of the tissue depends on the de- gree of aeration of the blood at the time of death. In chronic congestion the lungs are heavier than normal, are of a dark-red, bluish or black color. The congestion begins in the lower lobes first. Dark blood flows from the cut surface of the lung. (Edema and extravasation may oc- cur in the interstitial tissue. The alveoli contain swollen and granular cells and fibrin and leucocytes may be found (Cornil and Ranvier). In hypostatic congestion or spleniza- tion there is interstitial oedema and scattered red or yellow foci due to blood extravasation or to broncho-pneumonia. The tissue is homogeneous, firmer, contains little air and there is alveolar collapse. When the tissue is airless and tough it looks like muscle tissue and is sometimes called "carnified lung." At times the tissue is friable, there is col- lapse, oedema and mechanical hyperaemia, constituting a con- dition called "hypostatic pneumonia." In brown induration the lungs may be smaller in size if emphysema is not present. They are firmer and do not col- lapse. Pleural thickening, adhesions and pigmentation may be present. The lung tissue is irregularly pigmented, dry, and contains less air than normal. Brownish, serous fluid may present from the cut surface (Vircbow's "brown oedema"). There is elongation and dilatation of the pulmon- ary capillaries. The epithelial cells lining the alveoli are swollen, filled with dark brown pigment and are attached to the walls or are free in the alveolar cavity. Red corpuscles may be present in the intra-alveolar exudation. The lymph spaces of the alveolar walls contain pigment, which is also present in the interlobular peribronchial and perivascular PULMONARY CONGESTION. 201 tissues which are thickened. There is congestion and oedema of the bronchial lining with dilatation of its vessels. Haemorrhagic infarction may be present in the lung tissue. The lung is brownish, red or mottled with brown or black specks or streaks and is more dense and thicker than nor- mal lung tissue. Clinical history.—The history of pulmonary conges- tion is covered by that of its aetiological factors. Dyspnoea, cough and blood-stained, watery expectoration may be prom- inent. In acute congestion there is sudden, urgent dyspnoea with a sense of constriction about the chest, but no pain. In chronic congestion more or less dyspnoea will be present but is not complained of as the patient becomes somewhat accus- tomed to it. The temperature may be elevated. Symptoms and diagnosis.—Increased frequency of respiration with dyspnoea and blood-stained expectoration combined with harsh respiratory sounds and fine crackling rales, especially in the lower portion of the lungs are the chief symptoms of acute congestion. Chronic congestion may show feeble respiratory sounds, harsh respiration with prolonged expiration and fine bubbling or crackling rales from oedema. The aetiological associations will indicate the nature of the congestion. Pulmonary embolism and infarction are characterized by rapid, panting breathing and the expiration is not prolonged. After the urgent symptoms of the onset of acute congestion have passed off the breathing is not panting. In asthma, the prolonged expiration and the char- acteristic rales will differentiate. Pneumonia is excluded by the absence of the chill, temperature, characteristic ex- pectoration and by the presence of its more definite physi- cal signs. Treatment.—In acute congestion developing suddenly with urgent symptoms, such as cyanosis and lividity, relief must be obtained as the right heart will fail. Dry cupping over the entire chest or venesection (eight or ten ounces)is de- manded. Steam inhalations, turpentine stupes to the chest, aromatic spirits of ammonia, ether, digitalis, and heat to the extremities may be used. Large doses of digitalis are use- 202 pulmonary cedema. ful in active congestion from alcohol, and alcoholic stimula- tion may be advisable in acute congestion from sudden car- diac failure in acute fevers and myocardial disease. The bowels should be kept freely open with saline purgatives. In chronic congestion the treatment will vary with the nature of its cause, and need not be repeated here. PULMONARY (EDEMA. Pulmonary oedema is a secondary affection which is us- ually combined with more or less congestion of the lung of which it may be the result. An "acute" form of pulmonary cedema occurs in which its secondary nature may not be de- termined.* ^Etiology.—(Edema of the lung occurs in connection with pneumonia, bronchitis, emphysema, nephritis, the var- ious diseases of the heart, scorbutus, purpura, anaemia and heart weakness in infectious fevers. Obstruction in one part of the pulmonary circulation may cause oedema in an- other portion. In cases of general dropsy pleural ad- hesions on one side of the chest may cause oedema of the corresponding lung while there may be hydrothorax of the opposite side. Encysted pleurisies may cause local oedema in the adjacent lung tissue. Morbid anatomy.—Pulmonary cedema is characterized by serous exudation in the alveoli and interstitial lung tis- sue. Pale, frothy, fluid flows from the cut surface of the lung or is easily expressed; it is blood-stained if congestion be present. The lung tissue does not collapse, is pale or tinged with red, has a gelatinous appearance, pits on pres- sure, is heavy and may be friable. Collapse of the lung, pneumonic conditions and various degrees of congestion may be present. CEdema occurs most often in the lowest portions of the lungs. The pleural sur- faces are moist and the cavities of the pleurae may contain some fluid. Clinical history.—Rapid breathing, dyspnoea, more or less cough with watery,frothy expectoration are the prin- * Acute oedema with non-febrile onset and rusty,watery expectoration was styled pneumonia serosa by Traube. PULMONARY CEDEMA. 203 cipal features of the history. The dyspnoea may be sudden and severe. The temperature will be normal unless eleva- ted from some associated cause. Symptoms and diagnosis.—The pulse is increased in frequency, is feeble, and irregularity may mark the severe cases. Cyanosis, lividity, distension of the cervical vessels and extreme dyspnoea marks failure of the right heart. When cedema is associated with acute congestion the lungs may be over-distended. In most cases inspection and palpation are negative, The percussion note will be partially dull over the lower por- tions of the lungs. In chronic heart disease, oedema is apt to be most marked in the left side at the lowest portion of the lung. The breathing is harsh, feeble or suppressed in the lowest portions. Towards the end of inspiration, and possi- bly with the commencement of expiration, fine crackling rales are heard resembling somewhat a crepitant rale. Larger, moist, and occasionally dry rales are heard. The crepitating rales of cedema are more liquid in char- acter and not so closely bunched, as to time, as those of pneumonia. Their occurrence on both sides in the most dependent part of the lungs, together with their associa- tions, the watery expectoration, the absence of chill, temperature etc., will differentiate oedema from pneumonia. In bronchitis there is fever, tenacious, mucous expectoration, the dullness in the lower lung is not marked, the rales are not so fine and are more widely scattered than in oedema. The persistently rapid breathing of pulmonary infarction and the localized physical signs are sufficient to distinguish it from oedema. In asthma and hydrothorax, the physical signs of. these affections will be sufficient to prevent confu- sion. The following case may be regarded as one of acute pnlmonary cedema: Man, aged 41 years, a baker by trade. Has a slight, aortic stenosis, with perfect compensation, which causes no disturbance. In Febuary, '95 had a severe attack of influ- enza with some bronchial symptoms. During this attack the temperature was not above 101° F. On the fourth day of 204 pulmonary cedema. the influenza the temperature rose to 102.5Q F., there was some pain in the chest and considerable dyspnoea. The next day the expectoration, which had been mucoid and rather heavy and tenacious, became more liquid, then watery and frothy with very slight blood stains. There was considerable dyspnoea and cough. The greatest quantity of expectora- tion was, as near as could be estimated, over two quarts in twenty-four hours. The watery expectoration lasted three days and diminished gradually. Recovery ensued. It could not be determined, in this case, that the condi- tion of the heart had anything to do with the production of the pulmonary oedema. Treatment.—The treatment of pulmonary oedema is largely that of the diseases with which it is associated. When cedema occurs with diseases of the kidneys, elimina- tion by the kidneys, skin and bowels must be pushed. Dry cupping over the chest and lumbar regions may be used. In acute fevers the occurence of cedema is an indication for general and cardiac stimulation. Calomel and salines are useful as purgatives. [Lemoine recommeds a decoction of the inner bark of the elder (Sambucus niger) for oedema and ascites due to subacute nephritis. MacGregor reports good results from strophanthus in oedema pulmonum.] Strychnia and digitalis are the most useful stimulants in most cases. When oedema of the lungs develops in connec- tion with diseases of the heart, more energetic use of these remedies is demanded. The occurrence of cedema at the base of the lungs during acute febrile disease generally in- dicates failure of the right ventricle and is an indication for large doses of strychnia which should be given hypodermi- cally (tjV to TV gr. every two to four hours as necessary). Strychnia is here a temporary stimulant and should be pushed. In chronic cardiac disease cedema is not so amen- able to strychnia and we depend more on smaller doses combined with digitalis. 205 PULMONARY INFARCTION. Infarction of the lung {pulmonary apoplexy, embolic pneu monitis—Jurgensen) is a circumscribed form of pulmonary haemorrhage. Some writers describe, under the head of diffuse pulmonary infarction, haemorrhage into the lung sub- stance from rupture of aneurisms, vascular erosions from cancer, abscess, gangrene, traumatism, or very large infarc- tions. The true haemorrhagic infarction such as occurs from aseptic embolism of the pulmonary artery, is the form un- der consideration. ^Etiology.—Infarction of the lung occurs most fre- quently in cases of mitral stenosis or regurgitation where long continued and marked increase in pressure causes rup- ture of small pulmonary veins or capillaries (according to Ganurtz these infarcts are due to the rupture of newly formed vessels.) Embolism and thrombosis of the pulmon- ary vessels cause infarction of the lungs. Considerable difference of opinion has been expressed as to the effect of embolism and thrombosis on the organ in which they produce infarction. The frequent presence of thrombi in the right heart, the presence of an embolus in the largest artery entering the infarction and the resemblance of these infarctions to those of the spleen and kidneys which are known to result from embolism, are facts in favor of the embolic origin of pulmonary infarctions; atheroma of the pulmonary artery, thrombosis of the main artery entering the infarction (without embolus) and the formation of infarc- tion during great slowing of the blood current, are facts in favor of thrombosis. On the other hand, all these causes may present without infarction,as infarction may occur with- out any of these factors. Again, the experimental produc- tion of embolism in animals does not result in infarction. Embolism does not always cause infarction as the circu- lation may be restored through the bronchial arteries or by anastomosis in the capillaries of adjoining lobules (Vir- chow, Kiittner). It is evident from these considerations that infarction of the lung may arise from either of these 206 PULMONARY INFARCTION. conditions and that no one is absolutely necessary to its production.* All the causes of embolism and thrombosis, therefore, may cause infarction. Thus we may have pulmonary infarc- tion from detachment of a thrombus in a systemic vein in phlebitis, of a cardiac thrombus in asystolism of the right heart, of a thrombus in the main trunk of the pulmonary artery. Vegetative endocarditis of the right heart, and, possibly, of the left heart also, may give rise to embolic in- farction of the lung. Fat embolism, air embolism, new growths and phleboliths are possible, though rare, causes of embolic infarction. Phthisis, vegetative and ulcerative en- docarditis, scurvy, purpura haemorrhagica, gangrene of the lungs, cholera, yellow fever, typhoid fever, tyhus fever and acute yellow atrophy may be accompanied by infarction of the lungs. Morbid anatomy.—Infarctions of the lungs occur in the lower lobes and in the outer and lower portions of the upper lobes. They are conical in form, somewhat irregular in outline and in some instances globular in shape (interior of the lung.) They vary in diameter from a fraction of an inch to that of an entire lobe. The apex of the wedge- shaped mass is at the point of obstruction in the artery with the base outward, projecting, possibly, above the level of the pleura. They are dark-red in color, firm, with well de- fined margins and may be multiple and confluent. They re- semble tumors and lobular pneumonia but are distinguished by their color, shape, position and associations and from pneumonia also, by their well defined limits. In infarction the bronchioles, alveoli and pulmonary capillaries are filled with red blood corpuscles. Catarrhal *Conheim and Virchow state that a plug does not necessarily exist in all cases, but Conheim says that when emboli block a terminal artery hemorrhagic infarction always results. The manner in which blood enters the obstructed area has long been in dispute. It is generally conceded that there is reflux of blood through the veins or capillaries. Litten claims that the reflux of blood is through the vessel., of the capsule of the organ. Hamilton maintains that embolism has nothing to do with the production of infarction, that it is caused by rupture of the capillaries and that the wedge shape of the infarction is due to the shape of the terminal bronchus and its air vessicles to which area the blood is confined. Kokitansky be- lieved that embolism always existed in haemorrhagic pulmonary infarction. PULMONARY INFARCTION. 207 cells are present in the alveoli and there may be traces of fibrin. The adjacent pleura presents extravasations or fibrinous exudation. Old areas of infarction show pigmented areas of coarse, fibrous lung tissue. Neighboring bronchi may be dilated. Dissection of the artery involved almost in- variably shows thrombosis with, probably, an embolus (Fowler). In small infarctions the blood may be expector- ated and the circulation reestablished. Clinical history.—Infarction does not occur in rap- idly fatal cases of embolism as two or three days are re- quired for the formation of an infarction. There may be a history of over-exertion or excitement, expectoration of small blood clots, uneasiness or constriction about the chest increase in the dyspnoea or syncope (cardiac cases), cere. bral symptoms or pain if pleurisy be present. If the cause is a septic embolus there may be chills, hectic fever,diarrhoea, and prostration. Symptoms and diagnosis.—Infarction may be pre- ceded by irregular intermittent heart action in cardiac cases. The temperature may be 101-102° F. or may not be above 100° F. If the infarction is sufficiently large there may be in- creased fremitus, localized dullness, bronchial breathing, or localized friction sound and tenderness on forcible per- cussion over the same area (Head). Sub-crepitant and crep- itant rales may be heard. (Edema and emphysema may mask the physical signs. In septic processes the sputum may be dark from mixture with blood or the contents of an abscess cavity may be expectorated. Perforations of the pleura, pneumothorax and pleurisy may occur. The expectoration of scanty, dark masses of blood is the most characteristic symptom. Extreme dyspnoea of sudden advent, rapid breathing, great pain, agony and fear of death marks the occurrence of extensive embolism of the pulmon- ary artery rather than infarction. The sputa of echinococci and of cancer of the lung resembles that of infarctions but their longer duration and associated signs with microscopic examination of the sputum will differentiate. In the following case infarction of the lung occurred in connection with acute endocarditis and pericarditis: 208 pulmonary infarction. Girl aged ten years. Acute rheumatism followed by dry pericarditis and endocarditis with mitral localization and extensive regurgitation. Both sides of the heart were much dilated, liver enlarged, pulse rapid and irregular, con- siderable dyspnoea, temperature 99.5° F. During the third week of illness the dyspnoea became suddenly worse, with some pain in the left side of the chest. The temperature rose to 102° F., pulse more rapid,some cough but no expec- toration. Examination of the chest showed a spot, in the anterior axillary line about the level of the fourth rib on the left side, which presented dullness, bronchial breathing and a local- ized friction sound. These signs presented over an area about an inch and a half square. Subcrepitant rales were subsequently heard in this area and all local signs disap- peared in about a week. The child subsequently died from dilatation of the right heart. Treatment.—The treatment of infarction of the lung is largely expectant. Absolute rest is imperative. In cardiac cases stimulants and digitalis are necessary. Strych- nia is the best stimulant. Codeine or small doses of mor- phine are useful for the dyspnoea (Gerhardt recommends musk and alcohol for the heart and morphine for the dysp- noea.) In collapse, stimulation to the extremities by hot ap- plications and dry cups over the chest may be used; with great dyspnoea and cyanosis, wet cups or venesection may be demanded. In septic infarctions, stimulants, tonics and supporting treatment are indicated. Infarction of the lungs occurs so seldom apart from other more common affections, that our therapeutic measures are usually directed toward the latter and beyond symptomatic means for the patient's relief. Infarction demands little attention. 209 HAEMOPTYSIS. The term haBmoptysis indicates the expectoration of pure blood and does not include the rusty sputum of pneu- monia, the slightly-stained expectoration of combined oedema and congestion of the lung or the slightly-streaked expector- ation which may occur in acute bronchitis. The consideration of haemoptysis as a distinct affection has no pathological, justification. However, its occurrence in cases presenting no other subjective or objective evidence of disease and the clinical necessity for regarding it, for the time being at least, as the only apparent affection, together with the established precedent, must be our excuse for us- ing the term haemoptysis in this connection. Bleeding from the nasal or pharyngeal passages,mouth orgums(spuri- ous haemoptysis) in persons with diseases of these passages, anaemia or haemorrhagic diathesis,is not included under this heading. ^Etiology.—Diseases and growths in the larynx or tra- chea may cause haemoptysis. Its most frequent cause is active or passive hyperaamia of the bronchial mucous mem- brane with or without weakness or degeneration of its ves- sels. Ulceration of the bronchial membrane or rupture of an aneurism into the bronchi may rarely cause haemoptysis. It is an early symptom in tuberculosis with or without bronchial symptoms. Some authorities regard the develop- ment of tuberculosis as certain when haemoptysis occurs without any other ascertainable cause. This is too radical a view, as, in many instances, the bleeding is but an evi- dence of the weakness of the capillary vessels and loss of tone which constitutes the predisposition to, but does not necessitate, the development of tuberculosis.* Any inflammatory disease of the bronchi or lung may be attended with haemoptysis. Tumors of the lung, hydatids bronchiectasis, actinomycosis, pleurisy, abscess of the liver, traumatism of the chest, lesions of the mitral valve, pulmonary embolism or thrombosis, degeneration of the pulmonary artery in emphysema or senile life, vaso-motor "Rlndfleisch savs that when haemoptysis is followed by tuberculosis,the haemor rhage is due to vas'cular tubercular infiltration. 210 HAEMOPTYSIS. affections, the rupture of aneurisms of the aorta or of branches of the pulmonary artery, tubercular disease of the pulmonary artery, scurvy, purpura, haemophilia, leucocy- thaemia, pernicious anaemia and the malignant type of infec- tious diseases may be attended with haemoptysis. It is generally conceded that haemoptysis may occur vicariously with menstruation (vicarious haemoptysis) though some authors consider it doubtful in the absence of disease of the lungs. I have seen two cases in'which haemoptysis occurred every four to six weeks in young women between fourteen and seventeen years of age in whom menstruation was not regularly established and who afterward developed into perfectly healthy women without any evidence of pul- monary disease. In these cases local conditions of blood pressure, from vasomotor disturbances, are undoubtedly concerned in the production of the vicarious haemorrhage. Morbid anatomy.—After fatal haemoptysis the bron- chial membrane will be dark-red, swollen and ecchymotic. Thick,cylindrical blood casts may be found in the bronchi of the same lung, or opposite lung if the patient has been ly- ing on that side. The aspiration of blood into other portions of the lung causes pinkish patches in the lobules. If the haemoptysis occurred sometime before the examination no trace of the bleeding may be found. Small nodules much resembling infarctions may result from aspiration of blood into air cells. In tubercular haemoptysis tubercular changes may be found in-the walls of the vessels. In ad- vanced tuberculosis an aneurism may break into a cavity causing gradual leakage through the clot, or there may be immediately fatal haemorrhage. The rupture of the vessel may be caused by tubercular ulceration of the vessel wall. Clinical history.—The following histories illustrate the most frequent types of haemoptysis. The first case is one of bronchial haemorrhage from loss of tone in the bron- chial capillary vessels: Lawyer aged 38. Height 5 ft 10 inches; weight 148 pounds. In 1891 had a slight haemorrhage accompanying an attack of bronchitis of moderate severity; spat up a small quantity of blood on two occasions. There were slight HAEMOPTYSIS. 211 streaks of blood in the sputa for two days afterward. In '93 had another slight attack of bronchitis with the expectora- tion of a small quantity of blood. In'96 had an attack of laryngitis with some bronchial irritation and cough. Dur- ing this attack he spat up clear blood on three different oc- casions. Examination at this time showed nothing except slight harshness of the inspiration over the trachea and main bronchi. The temperature was 99 F. for three days but sub- sided without treatment. Examination of the lungs in March '98 showed nothing abnormal. There had been no recurrence of the haemoptysis,and only once of the bronchial trouble. No tubercle bacilli were found, at any time, in the sputum. He has gained in weight and strength and consid- ers himself perfectly well. The following case is one of haemoptysis in mitral re- gurgitation with temporary dilatation of the right heart: Man aged 58, seen in consultation. Had an old mitral regurgitation with fair compensation but had overtaxed his heart causing dilatation of the right side. He was a large, fleshy man and when seen by me was lying in bed suffering from dyspnoea and was somewhat cyanotic. As he could not turn in bed he had caused newspapers to be fastened to the wall on either side of him and would turn his head either way and expectorate clear blood on these papers with force and precision. The total quantity of blood was considerable and the haemoptysis lasted several days. The lower extrem ities were covered with petechias. He subsequently recov- ered and was about in apparently good health when last heard from. The following case is one of haemoptysis in tubercular lobular pneumonia. These cases present a distinct clinical type in which haemoptysis is an early and at times persist- ent symptom. It appears conjointly with the rise in tem- perature and continues while the blood pressure is high. It is due to the severe collateral congestion attending the lob- ular inflammation which latter is generally tubercular in nature: Young man aged 24 years, clerk by occupation. Height 5 ft. 8 inches: weight 136 pounds, healthy appearance. Pre- vious general health good with the exception of two attacks of slight haemoptysis in connection with slight bronchial in- flammation. In March '89 had an attack of haemoptysis. Would spit 212 HAEMOPTYSIS. up a teaspoonful of clear blood several times in an hour. Temperature 102.5 F., pulse 120 per minute and of high ten- sion. Examination showed bronchitis and lobular pneumonia of the upper lobe of the right lung. The acute symptoms lasted six days during which time the bleeding continued in spite of all kinds of astringent remedies, ergot internally and ergotin hypodermically. These remedies were stopped and the blood tension lowered, through aeonite and the con- tinued loss of blood, when the r.aemoptysis ceased. The lung did not clear up after the acute stage of the dis- ease had passed. Acute tuberculosis developed. Death in six months. No tubercle bacilli were found until after the attack of lobular pneumonia. Other similar cases could be cited in which successive attacks of lobular pneumonia occurred with haemoptysis, eventuating in tuberculosis and in which bacilli could not be found during or subsequent to the first attack of pneumonia. In the following case fatal haemoptysis occurred in a subject of pulmonary tuberculosis with a large cavity in the upper right lung. There was probably some connection be- tween the occurrence of the haemorrhage and circulatory ex- citement incident to sexual effort: Man aged 35 years. Tuberculosis of right lung, cavity in right upper lobe. Had lost much flesh but was able to at- tend to business. Sept. 15th, '87 retired to bed feeling as usual. Shortly afterward had a sudden haemorrhage, brought up a large quantity of blood, went into collapse and was dead when I reached him fifteen minutes later. It is probable that the haemorrhage in this case resulted through tubercular ulceration of a vessel or the rupture of an aneurism into the cavriy in the lung. There was free bronchial communication with the cavity. Symptoms and diagnosis.—The quantity of blood ex- pectorated varies from a mere streak or clot to one or two pints. It is alkaline in reaction, bright red in color or of a venous hue if the quantity be great. It is more or less frothy and may be mixed with sputum. The statement of the patients and friends in regard to the quantity of blood expectorated should be received with caution as a half tea- cupful, in their eyes, usually means about two teaspoonsful by actual observation. haemoptysis. 213 When the blood has remained in the lung it is black or brown and may form moulds of the tubes and such clots or pieces may be expectorated for several days after a haemor- rhage. The haemorrhage is usually sudden, unannounced and most often not connected with violent exertion. The subject is made aware of it by the presence in the throat of a salty substance with or without cough. With severe cases there is pallor, faintness and collapse. The pulse is rapid, the temperature normal or sub-normal, except in pneumonic cases when it will be elevated. In all cases the temperature may be elevated after the bleeding has ceased. The men- tal effect on the patient produces great restlessness and anxiety. The physical signs are usually negative. The patient should not be disturbed for examination, and percussion should not be be practiced as it affords no information and disturbs the patient. Auscultation may show localized signs of liquid in the bronchial tract or harsh breathing confined to a certain area, but most often is entirely negative. In the diagnosis spurious forms of haemoptysis should be excluded. Examination of the larynx should be made to exclude affections of that organ. Haematemesis is accom- panied by vomiting and gastric symptoms, the blood is dark, grumous and mixed with food. (The blood in haemoptysis may be swallowed and give rise to haematemesis and melaena.) In many cases it is difficult to tell just what haemoptysis may indicate and it is well to give a cautious opinion even though local signs of tuberculosis are not clear and bacilli are are absent from the sputum, as, in a large number of cases,* when blood is freely expectorated, tuberculosis has already commenced. Treatment.—In the milder forms of haemoptysis the treatment is confined to general methods in regard to the patient:s common condition, with such special medication as the condition of the bronchial tract may demand. In the more severe forms such as occur with lobular pneumonia or *According to Sir Andrew Clark,recurrent haemoptysis may occur in asthmatic subjects without any sign of serious disease of the lung developing either at the time or subsequently. Newman reports cases of haemoptysis without pulmonary lesions being found post mortem. 214 Haemoptysis. in the early periods of tubercular infection, absolute rest in bed is the first requisite. The nervous excitement of the patient must be calmed as much as possible by assuring him of the absence of immediate danger. If cough is troublesome it should be quieted by sucking small pieces of ice or by small doses of morphine. Hot drinks and extensive cold applications should not be allowed. If the haemorrhage is profuse moderate doses of morphine should be given hypoder- mically (f i gr). If the blood is not fully expectorated, but tends to accumulate in the lungs, morphine should not be given. The bowels should be freely moved with salines as this tends to reduce the blood pressure. Nitro-glycerin should not be given because of its stimulant action on the heart. The use of the time-honored astringents is of little or no value in these cases, but, like salt, of which the patient's friends will probably insist on his partaking in spoonful doses, if they serve to reassure the patient and modify the pernicious activity of his friends, there can be no harm in their administration. Ergot is probably more harmful than beneficial in these cases. The blood tension is usually high, and if so the bleeding will probably continue until it is low- ered through the effect of drugs or the loss of blood. Ergot maintains the vascular tension and its beneficial action, through contraction of the particular vessels involved, is decidedly problematical. The use of aconite in sufficient doses to lower the blood pressure is much more rational and effective. Two-drop doses of tincture of aconite root, with ten grains of sodium bromide, may be given every hour or two until the blood pressure is relieved and the patient quieted. The action of aconite should be carefully watched. In haemoptysis accompanying cardiac disease strych- nia and digitalis should be given. The necessity of reliev- ing the stagnation of blood in the lungs is much more ur« gent than is the danger of a moderate increase in the blood pressure, in fact the former effect can only be produced through the latter means. In some cases when the right heart is over-filled, venesection may be indicated, indeed, in the severe form of haemorrhage accompanying lobular pneumonia with high blood pressure, venesection is the quickest way to relieve the tension and stop the bleeding. Dry cupping may be of service in some cases. The diet should be light and easily assimilated. Milk, meat-essences etc., are best. The after treatment involves hygienic and climatic measures as well as general tonic med- ication. Alcohol and tobacco should be prohibited. CHAPTER X. PNEUMONIA. Pneumonia (lobar, croupous, fibrinous) is an acute in- flammation of the lungs of infectious origin. It has special aetiological, pathological and clinical features which distin- guish it from other acute inflammations of the lungs. These characteristics are so distinctive that it is advisable to re- strict the unqualified term pneumonia to the affection under consideration. Pneumonia may be primary or secondary. In its pri- mary form it is most common in the temperate zone and is usually sporadic or endemic. It may occur in an epidemic form (Sturges and Coupland), especially when accompany- ing or following epidemics of influenza. Pneumonia is more common in winter and spring, and the monthly variations of its incidence follow those of scarlet fever and diphtheria (Folsom). Men are more often affected than women (2^ to 1). While no period of life is exempt, pneumonia is less fre- quent in infancy than in adult life, being most common from the second to the fifth decades of life. The time-honored idea that pneumonia was a disease of robust constitutions only, was due to the fact that this type of individuals ex- hibit mainly the sthenic form of the disease and not the atypical forms from mixed infections or secondary inflam- mations. Apparently, the death rate from pneumonia has in- creased since 1852, though to some extent this is due to the better classification of atypical cases, especially those which simulate typhoid fever. ^Etiology.—Pneumonia is due to infection of the lung with microorganisms. To regard the local conditions simply as the characteristic expression of a general disease is no more rational than to attempt to explain the symptoms and clinical course of the disease by the altered mechanical 216 PNEUMONIA. relations of the heart and lungs without reference to the toxic conditions which arise during its course. The exact relations of the subsidiary aetiological factors of pneumonia, in lessening the resistance of the individual or in producing a favorable culture field for the growth of organisms, are questions which are yet largely undetermined. The extent to which direct infection or contagion is possible in pneumonia, is a matter of discussion. While it is evidently not actively contagious in the sense that small- pox is, still, numerous reports indicate the possibility of di- rect transmission of the infection, especially when the sub- ject has been exposed to predisposing causes. The names of Klebs. Sternberg, Friedlander, Frankel and Klein are most intimately associated with the bacteriol- ogy of pneumonia. The work of these observers, together with that of Talamon, Weichselbaum and others, has dem- onstrated that pneumonia is accompanied by the presence and development of microorganisms in the inflamed lung tissue but that neither the pneumococcus of Frankel (Micro- coccusPneumoniaeCrouposae,Diplococcus Pneumoniae, Micro- coccus Pasteuri,—Sternberg), Friedlander's Bacillus (Bacil- lus Pneumoniae) or Klein's Baccillus (Bacillus Pneumoniae) are invariably present in pneumonia. Frankel's pneumococcus is most frequently met with and appears to be most pathogenic of pneumonia. It may be present in the secretions of the mouth, nose and bron- chial tract of healthy individuals. These various organisms, together with the streptococcus pyogenes, staphylococcus pyogenes aureus or albus and other organisms, may be pres- ent collectively or separately in pneumonia. Again, any or all of these organisms may be impossible of demonstration. Various lesions independent of pneumonia may be caused by the pneumococcus.* Exposure to cold, mechanical injury or chemical injury of the lung does not directly produce pneumonia. *According to Pearce the pneumococcus is invariably present in lobar pneu- monia and its complications. Its presence in pure culture in the majority of cases indicates its aetiological relations. General infection, in fatal cases, is quite fre- quent and therefore of considerable importance both from a bacteriological and a clinical point of view. PNEUMONIA. 217 Climatic conditions have much to do with the preva- lence of pneumonia. From November to March is the pe- riod when pneumonia is most apt to occur. The sudden changes of temperature, and the great degree of atmos- pheric moisture common to this period, are particularly favorable to the development of pneumonia. The low tem- perature and dry, penetrating winds of high altitudes may favor the occurrence of pneumonia. Duerck has shown that in persons dead from other diseases than pneumonia,' the lungs may contain bacteria similar to those found in pneu- monia, especially the diplococcus pneumoniae; that injec- tions of bacteria into the trachea of animals was not fol- lowed by pneumonia unless irritating substances were also injected, which latter, on exposure to cold alone, also caused pneumonia. Eshner thinks the harmful effect of cold depends on the resulting hyperaemia of the lungs. The fact that the pneumococcus can lose its virulence and then revert to its original type, biological characteristics and virulence (Kruse and Panisi, Eyre and Washbourn) may ex- plain some features which seem irreconcilable with the bac- terial origin of pneumonia. Overwork, bodily injury, mental exhaustion, poor food, alcoholism, etc., may predispose to the development of pneumonia. Bright's disease, typhus fever, typhoid fever, erysipelas, rheumatism and influenza are the diseases most frequently predisposing to secondary pneumonia. During the last few years influenza has been especially prominent as a factor in the causation of pneumonias which have been marked by the atypical nature of their course and the mixed character of their infections. Pneumonia is apt to recur in persons who have once been affected with it. Morbid anatomy.—Pneumonia occurs more often in one lung than in both, the right lung being most often af- fected (2 to 1). In the majority of cases the disease begins in the lower portion of the lower lobes and spreads so as to involve'a portion, the whole, or even more than a single lobe. It may, however, begin at any point and involve any 218 PNEUMONIA. amount of tissue. It is frequently confined exactly to the lim- its of a single lobe. The middle lobe of the right lung is seldom affected except in association with other portions of the same lung. In children the apices are affected more fre- quently than in adults, the left lung being also more often in- volved. The pleura over the inflamed area is usually involved and inflammation of the pericardium, bronchial glands, med- iastinal tissue,peritoneum and meninges are frequent accom- paniments. The inflammatory process in pneumonia consists of three stages: the stage of engorgement; the stage of red hepa- tization and the stage of gray hepatization. Engorgement. In this stage the lung is exceedingly vas- cular and there are the ordinary changes in the vessels characteristic of inflammation. The lung is dark red and its specific gravity and absolute weight are increased; its elasticity is lessened, it is less crepitant and more friable than normal and pits on pressure. Sticky, frothy, reddish fluid exudes on section. Red Hepatization. In this stage there is exudation of liquor sanguinis and migration of blood cells into the lung tissue. Extravasations of blood may occur from the rup- ture of small vessels. The exudation coagulates in the air cells and terminal bronchioles forming a semi-transparent coagulum entangling leucocytes and red corpuscles in its meshes. The fibrin filaments are most numerous in cases due to the diplococcus pneumoniae (Wichselbaum). Mononu- cleated leucocytes are as numerous as multinucleated, and pneumococci may be present in both. The lung is increased in size and may show the impres- sion of the ribs. It is heavier than in the first stage, solid, sinks in water and cannot be inflated. The pleura covering the inflamed area is opaque and covered with lymph. The prominent, firm, dark area of inflamed lung can be recog- nized before section is made. The lung tissue does not crepitate, is friable and tears with a granular fracture. The coagulations project from the alveoli and bronchi and can PNEUMONIA. 219 be lifted or pulled out. There is irregular hyperaemia of the adjacent tissue but no lobular involvement. Beyond swelling and granulation, the alveolar epithelium sustains little change as, also, do the walls aside from containing a few leucocytes. The color of the lung is dark reddish- brown, grayish or marbled. Gray Hepatization. In this stage the leucocytes fill the alveoli and infiltrate the alveolar walls whose epithelial cells have become more swollen and granular. The tissue has a uniform appearance having lost the granulations of the first stage. Disintegration of the fibrin, decolorization of the red cells and fatty degeneration of the white cells oc- cur, with, in advanced cases, partial destruction of the al- veolar walls. The weight, density and friability of the lung is in- creased; its tissue is soft and pulpy. A puriform liquid ex- udes from the cut surface and the color becomes irregularly gray or yellowish white owing to fatty degeneration of the cells and to post mortem expression of blood (Rindfleisch). Advanced stages of gray hepatization have been termed "purulent infiltration" and "suppuration" of the lung. These stages of the morbid process in pneumonia pro- gress irregularly in different portions of the lung and may advance rapidly or slowly. The bronchi of the affected area are more or less inflamed and contain a blood-stained mucus or a dark, watery exudation if the lung is cedema- tous. The blood of a pneumonic patient, when drawn, coagu- lates slowly. The red corpuscles having settled, the clot has a "buffy coat." This condition (hyperinosis) is not char- acteristic of pneumonia. A greater or less degree of leu- cocytosis (Piorry) is usually present. According to Cabot, leucocytosis is present early and continues throughout the febrile period; it diminishes just before or at the crisis and disappears gradually after the fall of temperature; if infec- tion is slight and reaction vigorous, leucocytosis is slight; if infection is marked and reaction also, leucocytosis is con- siderable; if infection is marked and reaction is slight, leu- cocytosis is absent. In other words, leucocytosis may be 220 PNEUMONIA. regarded as evidence that the system is putting forth an effective struggle against the infection. Pneumococci may be found in the blood. Their pres- ence there gives, according to Kohn, an unfavorable prog- nosis as there may be a "pneumococcus sepsis" as a cause of death. The morbid process in the lung in pneumonia may ter- minate in resolution, abscess, gangrene, or cirrhosis of the lung. Resolution is effected through degeneration and absorp- tion of the inflammatory products. It is doubtful if re- covery ever ensues from advanced stages of gray hepatiza- tion. According to Weismayer the presence of streptococci should lead us to expect delayed resolution. Abscess is a rare result of pneumonia. Pye-Smith con- siders it extremely rare, and undoubtedly it is, as a direct result of fibrinous pneumonia, but as a secondary result either of circumscribed gangrene or of delayed resolution from associated pleurisy or empyema,particularly in connec- tion with mixed infections, abscess is occasionally found as a result of pneumonia. Gangrene is very rare and occurs in debilitated subjects from coagulation of blood in the pulmonary or bronchial vessels, extensive extravasations of blood or from septic conditions of the inflammatory products. Cirrhosis. In delayed resolution in pneumonia the al- veolar walls may become involved in a new growth of fibro- nucleated tissue which may very rarely develop into a fibroid induration or interstitial pneumonia of varying ex- tent (Addison's "marbled induration"). As a result of croupous pneumonia, however, this termination is very rare. Clinical history.—While in some instances the de- velopment of pneumonia may be preceeded by irregular pains, anorexia, and general malaise, and, in cases of mixed infection, the development may be slow and indefinite, in the majority of cases of typical pneumonia the onset is sudden, preceeded only by headache or a nervous chilliness or shivering. Sudden pyrexia followed by sudden and se- PNEUMONIA. 221 vere rigor in adults, or vomiting or convulsions in children, marks the incidence of the disease. When the chill has passed the patient is prostrated and the headache may con- tinue. The skin is hot and dry, the pulse quick, the tem- perature reaches from 103° to 104° F. within a few hours. Pain in the affected side may be very acute and may be the chief source of distress. It is increased by breathing, coughing or movement. There is short, irritating, hacking cough usually most troublesome in apical pneumonias and in children. The breathing is rapid, panting in character and shallow if there is much pain. A marked feature of the clinical history is the change in the pulse-respiration rate, the normal ratio of 4 1 being altered to 3-1 or 2-1, so that a pulse rate of 90 may accompany a breath rate of 40. There is slignt morning remission and evening exacerbation of temperature. The urine is scanty, dark, of high specific gravity; the urea and uric acid are increased, the chlorides diminished and it may contain albumen, blood and fibrinous casts. The sputum is at first frothy and scanty but soon be- comes viscid and tenacious. It sticks to the mouth or lips and adheres to the sputum cup. It usually assumes a char- acteristic rusty-brown color but may be thin and of a dark brown hue (prune-juice expectoration). The sputum con- tains blood corpuscles, epithelial cells, mucoid cells, granu- lar cells, oil globules and sometimes casts of the finer bronchi.* The face, especially the cheeks, is flushed and of a dusky-red or purplish color. In some cases dyspnoea and cyanosis may be marked, though the latter may be present without the former. In typical cases, for a period of from five to ten days, there is little change in the patient's condition beyond cessa- tion of pain and headache, lower tension of the pulse, less •Chemically, the sputum is marked, during the febrile period, by the absence of alkaline phosphates, excess of potash over soda, excess of sulphuric acid (Bam- berger),26 pericent. of fixed salts as compared with 18 per cent.in normal mucus—the greatest increase being in the sodium chloride. During resolution these charac- teristics disappear.—Fowler. 2 22 PNEUMONIA. flush in the cheeks, disturbed sleep with irregular delirium, brown and dry tongue with dry and fissured lips, more or less tenacious sputum and in some cases a small collection of herpes labialis or facialis. At any time from the third to the tenth day, but usually from the fifth to the eighth day, there occurs the "crisis."* The first sign of the crisis may be a great change in the general aspect of the patient, a transition from great an- xiety, restlessness or delirium to calmness and assurance of recovery such as occurs so suddenly in no other disease. The patient sleeps; the skin becomes moist or there may be profuse perspiration; the temperature falls to 98° or 97° and the pulse to 60 or less; dyspnoea and delirium disappear. The temperature rises on the following day to 99.5C or 100c and then falls to normal or slightly below for the first days of a convalescence which usually occupies from two to three weeks, This typical clinical course is subject to very great va- riations in the various clinical types of identical infections, infections of different nature, mixed infections and from complications. Among the most dangerous of the irregular forms of pneumonia in which special forms of infection cannot be demonstrated are the secondary pneumonias which compli- cate typhoid fever, typhus, relapsing fever, small-pox, ery- sipelas, septicaemia and sometimes diphtheria or scarlatina, nephritis, diabetes, alcoholism, cardiac disease and those which occur after surgical operations. In many of these instances the pneumonia can be demonstrated as of a septic type, but often this cannot be done. These pneumonias are marked by absence of rigor, gradual and irregular rise in temperature, absence of pain though pleurisy may be ob- served on physical examination, absence of expectoration and of the characteristic condition of the urine. They are essentially latent in type, convalescence is protracted and the mortality rate is high. *The crisis occurs most frequently on the seventh day from the initial rigor (24 percent.), on the fifth day in 15-16 per cent., sixth or eighth days in 12 per cent., ninth day in 10 per cent., and in all cases between the fifth and ninth days in 72 per cent.—Fowler. PNEUMONIA. 223 Primary pneumonia may also show great variation in its clinical course in the character of the onset which may be marked by great restlessness or delirium especially in debilitated or alcoholic subjects or in apical pneumonia es- pecially in children. The expectoration may be muco-puru- lent, greenish or bloody (haemorrhagic pneumonia) especially in old people. The crisis may occur with slight fall of temperature which rises again to its previous height and defervescence may occur by lysis or there may be no critical period. The temperature may rise gradually or suddenly and then vary from 101° to 103°, defervescence being by lysis. Great variation is shown in the temperature charts of irreg- ular cases. In some degree the temperature shows the vital resistance of the individual. Gastro-intestinal symptoms may be marked. Vomiting at the onset is common in children. Diarrhoea may be troublesome at the outset or at the crisis,especially in septic pneumonia. Among' the types of pneumonia which present charac- teristic departure from the ordinary course of the disease is latent pneumonia which occurs in debilitated subjects and in the aged. The clinical course of this type and the physical signs are so indefinite that a diagnosis is often deferred until post mortem. Migratory pneumonia is a form of the disease in which there is successive invasion of other por- tions of the lungs co-iucidently with resolution in the por- tions primarily affected, each invasion being marked by the usual clinical features of the disease. Epidemic pneumonia is met with apart from the influenza pneumonias (Fox, Whitelegge, Sturges and Coupland). Particular epidemics are characterized by special clinical features as a rule. Bilious pneumonia is a type which is said to be associated with pneumonia of the right lung and not to affect the course or prognosis of the disease (Pye-Smith). My own exper- ience in this regard is directly contrary to this opinion. According to Banti the icterus is due to accidental haemo- lytic action of the diplococcus and is therefore haemogenic. The clinical course of the following case would agree 224 PNEUMONIA. with the haemogenic theory of the origin of the icterus. Man aged 56 years. Height 5 feet, 8 inches, weight 215 pounds. Manufacturer. Had syphilis twenty years pre- vious to present illness. Subsequent health good. Present illness of five days duration, began with slight chill. The temperature reached 102° on the second day but never ex- ceeded that point. No pain, little cough, no expectoration, moderate delirium. Examination showed complete consoli- dation of lower lobe of right lung. The bowels were loose, three to four small, thin, dark but not offensive passages daily. On third day of illness developed jaundice which gradually became quite marked and of a brownish yellow hue. The pulse was above 110 and feeble. Delirium and stupor continued. Pulse became more rapid. Jaundice persisted. Death on seventh day. Various other types of pneumonia are described, such as typhoid, recurrent, pythogenic, cerebral, intermittent, ephemeral, alcoholic, senile, etc., but they have no features not common to irregular forms of any of the regular types of the disease. Among the irregular forms of pneumonia which are due to a different form of infection and in which the pneumo- coccus has a subsidiary part or is absent altogether, is the influenza pneumonias and septic pneumonia. Since the ad- vent of influenza in epidemic form, many cases of pneumonia have followed an irregular course marked principally by er- ratic clinical course and indefinite physical signs. The fol- lowing case may be classed as one of influenza pneumonia: Young woman aged 24 years. Previous health good. March 29th, 1896 was taken ill with fever and slight cough. No chill. Temperature 101°. No pain, tongue slightly coated, no flush on cheeks, no physical signs. On the 22nd, slight dullness over lower lobe of left lung. On the 24th the dullness was marked and faint bronchial breathing could be heard. The limits of the inflamed area could not be determined. The sputum was scanty, mixed with air and never rusty. It contained numerous organisms which cor- responded morphologically to the characteristics of the in- fluenza bacillus. No pneumococci were found. The course of the disease was protracted. The temper- ature remained about 101° until the 3rd of April when it be- gan to decline, but did not reach normal until the 10th of April. The physical signs began to clear as the tempera- PNEUMONIA. 225 ture declined but the breathing was diminished for some time after the temperature had subsided. Septic pneumonia may occur in connection with puer- peral or surgical sepsis or pyaamic conditions from any cause. In some cases its origin is difficult to determine. The following case was probably due to infection through the intestinal tract: Professional man, aged 45 years. Height 6 feet, 1 inch; weight 210 pounds. Athletic, vigorous constitution. Had been overworking for two years. Was taken sick on Tues- - day. I saw him first on Sunday. The temperature had ranged from 101° to 103°. Pulse 110 to 120. Moderate diarrhoea, slight delirium. There was no pain in the chest, no cough or expectoration. Headache was constant. At the base of the right lung there was slight dullness and harsh breathing. The abdomen was slightly tympani- tic and tender. Widal'stest and the Diazo reaction were neg- ative. By Tuesday the temperature was 104°, pulse 120 and the signs of consolidation in the right lower lobe were con- clusive. There was moderate leucocytosis. The sputum was scanty, frothy and contained a very few pneumococci, a number of staphylococci and a few influenza bacilli(?). There was no special change in the patient's condition for six days, the temperature varying from 101° to 104° and the pulse from 110 to 120, the delirium continuing as did the slight cough, expectoration and irregular diarrhoea. At the end of six days the temperature began to decline and after switching between 99Q and 102° for five or six days reached the normal and improvement was then slow but steady. The illness was followed by marked mental and physical exhaustion from which recovery was gradual. The mixed infections whose organisms are associated with the pneumococcus either from the beginning of the at- tack or during the course of the disease, cause marked ir- regularity in the clinical history of pneumonia, as is exhib- ited in the following case: Miss S, aged 22 years. -School-teacher. Taken sick November the 15th with a typical attack of pneumonia. The temperature ranged,for the first six days, from 102.5Q in the morning, to 103.4° in the evening. The patient was very restless. On the seventh day the temperature was 101.8° and 10.2° and the patient seemed better though there was no perspiration. The pulse was five or six beats faster and the respiration about the same (45). Examination at this 226 PNEUMONIA. time showed commencing resolution in the left lung which had been involved. The right lung was clear. Eighth day, temperature 103°; ninth day, 103.6° and 104.2°. Examina- tion showed that resolution was progressing in the left lung and that there was no evidence of pleural involvement. Un derneath the spinal border of the right scapula there was a patch of lobular pneumonia which was not there on the seventh day. Examination of the sputum at this time showed pneumococci in abundance, a great many staphylo- cocci and a few streptococci. On the 13th day the patient commenced to perspire, the temperature was 101.2° and 100.6°, and on the 14th day 98.8° and 97.8°. The respira- tion and pulse were unusually rapid at this period, being 46 and 100 respectively. A slow but steady convalescence ensued. The complications which are most likely to modify the clinical course of pneumonia are pleural effusion, empyema, pericarditis, endocarditis, myocarditis, meningitis, paroti- tis, bronchitis, emphysema, valvular lesions, nephritis and, according to Bristowe, colitis. Pleurisy is considered as part of the history of pneu- monia by some observers and though some degree of pleu- ral inflammation is usually present it is not invariably so and for clinical purposes pleurisy may be regarded, when it can be recognized, as a complication. Pleurisy with effusion is present in about 25 per cent.of the fatal cases. Pneumococ- ci are generally found in the exudation. The pleurisy may come on at the time of hepatization (para-pneumonic.— Lemoine) and the exudation is then apt to be serous. In children and young people the pleurisy is apt to be purulent and come on at, or immediately after, the crisis. [In a re- cent case of apical pleuro-pneumonia in a child, the acute pleurisy apparently subsided, but after the crisis the tem- perature immediately returned to 102° and empyema devel- oped.] Pericarditis is a grave complication (one-half cases fatal. —Huss) It may occur when any portion of either lung is affected. Pneumococci are found in the exudation. The crisis of the pneumonia is incomplete and the febrile period prolonged. Ulcerative endocarditis may complicate pneu- monia (11 per cent, of fata cases.—Osier) and pneumococci PNEUMONIA. 227 are found in the vegetations. Acute and chronic endocar- ditis frequently complicate pneumonia, the latter in 17 per cent, of fatal cases and occurring most often in connection with pneumonia of the right lung. Myocarditis may be expected in connection with all severe cases of pericardi- tis or endocarditis associated with pneumonia, but it also oc- curs independently, from toxaemia, and is evidenced by oedema of the lung. The latter condition is present in fifty per cent, of the fatal cases of pneumonia. Bronchitis and empyema are frequent complications. The former may be especially dangerous. Parotitis occurs at or after the period of crisis, usually in elderly people. Suppuration is the rule and gangrene may follow. Meningitis is a rare but usually fatal compli- cation of pneumonia. Other complications are met with which modify the clinical history chiefly in regard to the period of convalescence. Death from pneumonia rarely occurs before the fourth day of the disease. The period of greatest danger is from the fifth to the ninth day. When the crisis is delayed or the temperature drops a degree or two and then returns to its former height, search should be made .for some disturb- ing element. Exclusive of infants, the death rate steadily increases as age advances. Hospital mortality is greater than that of private practice. As to children, opinions dif- fer. Females show a greater mortality than males (in 33. 606 cases; males 19.4 per cent., females 28.7 per cent.— Wells). Various statements are made regarding the gener- al mortality of pneumonia. If statistics prove anything they show that pneumonia is a fatal disease. [The statis- tics of Dr. E. F. Wells— Jour. Am. Med. Ass'n, June 9, '92,— 233,780 cases of pneumonia collected from various sources show a mortality of 18.1 per cent. Recent figures furnished me by Dr. Wells bring the total number of cases up to date to 366,544, with a mortality of 17.6 per cent.] According to Osier the mortality statistics are -uniform and, apart from complications, death is due to toxaemia or mechanical interference with the heart or respiration. In sudden death the action of the specific toxins on the heart 228 PNEUMONIA. center is more important than the effect of fever on the heart. Symptoms and diagnosis.—A few hours after the onset of pneumonia the patient presents a somewhat char- acteristic appearance. He lies on his back if the disease is central or basic, or on the side if there is pleurisy and much pain. His expression, in the former instance, may be rath- er dull and apathetic, while in the latter case it will be anx- ious and he will be restless. The skin is hot and burning, the face flushed and the cheeks, over the malar prominences, will be red or purplish. The alae nasi dilate with respira- tion which is short, quick and panting in character. The full, strong pulse, high temperature and short, hacking cough complete a picture of serious illness which the physi- cal examination, at this time, fails to corroborate. In no other disease will a person be so ill and yet, apparently, have so little the matter with him, as in the first stage of pneumonia, except, perhaps, some types of influenza. Al- butt says that a "sure diagnosis can be made from the as- pect of the patient, the pain, the sputum, the urine and the fever, without the aid of percussion and auscultation.'' Nevertheless physical examination remains the only method of ascertaining the exact nature, location and extent of the disease. Within a period, which varies with the type of the dis- ease, of from a few hours to the second day after the onset, we can detect evidence of the morbid process in the lung. Inspection, palpation and percussion are usually negative though there may be slight restriction of motion, and per- haps slight dullness On auscultation over the inflamed area the respiratory murmur is suppressed as compared' with other portions of the lung. It may be slightly harsh and later becomes broncho-vesicular in character. Just before or coincidently with these indefinite signs we may be fortunate in hearing the diagnostic sign of the first stage— the crepitant rale ("le signe pathognomonique du premier degre' de la peripneumonie."—Laennec). This sign lasts but a short time and is frequently not heard at all. The indi- viduality of the crepitant rale has been denied by some ob- PNEUMONIA. 229 servers, it being identified with pleuritic sounds by them It is, however, entirely distinct from pleuritic friction. Crepitant rales take place immediately at the end of the audible inspiratory sound and occur as a bunch of very fine crepitations occupying but a second of time and pro- ducing on the ear an impression of numerous, individual but simultaneous sounds, similar to the impressions made on the eye by the numerous but individually distinct lights of a Roman candle at the immediate time of explosion.* When heard a few times this rale is readily recognized and is sim- ulated only by the rale of oedema, from which it is distin- guished by its later occurrence and the more liquid quality and scattered occurrence of the rales of oedema. By the third or fourth day the signs of consolidation be- come well marked. Motion is much decreased. Fremitus may be increased, or absent if there is much tissue involved and little air in the lobe. Percussion gives a dull, high- pitched note. On auscultation the vesicular sound is en- tirely lost and the breathing is bronchial in character—soft, high-pitched and blowing in quality and distant from the ear. If, however, a large portion of a lung is involved and the tubes are filled with mucus, bronchial breathing may be entirely absent. Bronchial breathing is plainest during ex- piration, and in central pneumonias may, perhaps, be heard only during that portion of the respiratory act. Bronchophony is well marked in this stage and in some cases modified pectoriloquy may be heard. The breathing in the uninvolved portion of the lung is exaggerated. These physical signs, together with the high temperature, charac- teristic pulse and other symptoms, continue until the crisis is reached. When this has occurred if we examine the lung *Thc physical explanation of the crepitant rale is ever in dispute. It is gen- erally taught that it is due to the separation, by the air, of the walls of the terminal bronchial passages or the alveoli. This is objected to by those who hold that the air enters those pussages only by diffusion. They claim that the crepitant rale is a moist, bubbling rale. It would appear that the time of occurrence of the crepitant rale and the absence of a moist quality is not consistent with the latter theory, for, if the air interchanges in the smaller passages by diffusion alone the air cannot produce a rale at this particular time. Moreover we would call attention to the possibility of introducing oils directly into the alveoli by the inspired air (Thomas Jour. Am. Med.Ass'n.—May 28, l^flsi. 230 PNEUMONIA. we find the local conditions unchanged and it appears sur- prising that such a remarkable change should occur in the general condition of the patient and the local condition in the lung remain apparently unchanged. The phenomenon of the crisis in relation to the local condition of the lung is an effective argument in behalf of the toxic origin of the general symptoms of pneumonia About, or shortly after, the crisis, examination of the lung will show moist crackling rales (rales redux) at the periphery of the portion first consolidated. More air is heard entering the affected lung, the rales spread all over the affected area and resolution is well under way. Dullness will disappear within a few days unless pleural exudation or interstitial pneumonia maintain the percussion pitch. Many modifications in the physical signs may occur.' The clear- ness with which they present will depend on the absence of pleural exudation and adhesions and on patency of the tubes leading to the consolidated area. When the tubes are con- solidated, no signs beyond dullness and loss of motion may be obtained. The most unfavorable symptoms in pneumonia are a rapid, weak pulse, especially if the second pulmonic sound becomes gradually more short, snappy and intense; an ir- regular or intermittent pulse; cyanosis and rapid breathing, though cyanosis does not always depend on the mechanical obstruction in the lesser circulation but bears some relation to the toxaemia. Tympanitis, hiccough, subsultus tendin- um, delirium, and hyperpyrexia are unfavorable symptoms. Apical pneumonia and double pneumonia of the bases are most likely to show unfavorable departures from the usual course of the disease. Among those conditions whose physical signs simulate pneumonia, is pleural effusion, which is identified by the greater loss of motion, greater compensatory motion, apex displacement, loss of fremitus, flat percussion note with curved upper line of dullness, better marked sub clavicular Skodiac resonance, absence of vocal sounds over fluid, or at least a modified form of pectoriloquy or egophony, espec- ially in children. (Tubular breathing may be heard on the PNEUMONIA. 231 left side at the lower angle of the scapala when the lung is much compressed by the fluid.) The affected side is usually increased in size in pleursy with effusion. Aggregated areas of tubercular consolidation may simu- late pneumonia, but its course and the sputum examination will decide. Large infarctions with pleural effusion may resemble pneumonic consolidation. The erect position of the patient, the severe and sudden dyspnoea, and probably the presence of chronic heart lesion will aid the di- agnosis. The asthenic, septic form of pneumonia may be mistaken for typhoid fever. Widal's test, and the presence of leucocy- tosis in pneumonia, will help differentiate if the physical signs are not conclusive before these tests are reliable. Meningitis in children simulates pneumonia before the development of physical signs in the latter disease. In meningitis the cry, the attitude, retraction of the head and abdomen, the cerebral type of vomiting, intolerance of light and the simultaneous occurrence of headache and delirium, will distinguish it from pneumonia. (Edematous crepitation may be mistaken for pneumonic crepitation. The former is more widely disseminated, softer and more liquid in-quality and is not followed by signs of complete consolidation. Treatment.—In view of the mortality rate of pneumo- nia its treatment becomes a most important matter. As an infectious disorder of self-limited course it is evident that the natural tendency is toward recovery which would occur in all cases if we could avoid certain contingencies. This fact is only emphasized by the low mortality rate, under widely different methods of treatment, obtained in certain series of cases by different observers. That these contin- gencies do not depend on the extent or stage of the pulmo- nary lesion is shown by the rapidity of the post-critical change in the general condition of the patient and the fact that the mortality rate shows no direct relationship to the degree of pulmonary involvement. Aside from the compli- cations due to identical or associated infections we must consider then, that the phenomena of the disease, aside from 232 PNEUMONIA. the local condition of the lung, as well as most of its dan- gers, are due to toxaemia. The phenomenon of the crisis is generally admitted to be due to the development, during the course of the disease, of an anti-toxin, and experimental work has lately been di- rected towards the production of an artificial serum contain- ing these anti-toxic properties. The Klemperers, Bonome, Emmerich and others have proved the possibility of protec- tion from pneumococcus infection in aninals by the use of immunized serum. Washbourn has succeeded in producing a standardized serum from which he reports good results, De Renzi and others report favorable results from similar serums. While the outlook is favorable for the production of a serum with which we may mitigate the severity of the disease, if, indeed, we may not cut short its course, the matter of serum therapy in pneumonia is entirely in an experimental stage at present. In the meantime we must adhere to a more or less expectant plan of treatment into which routine, dogmatic methods of cold baths, hot baths, ice coils and heroic dosing of any sort must not be allowed to overshadow individual indications. Our main efforts should be to lessen the effect of the toxins on the heart and nervous system and to keep up elimination. The diet of the pneumonic patient should be light and easily assimilated. Milk is best but soups,broths or any of the concentrated foods may be used. The forced feeding of large quantities of food is very objectionable as it is apt to result in digestive disturbances which interfere with the action of the diaphragm. In an adult, not over two quarts of milk should be allowed in twenty-four hours. The food should be given about every four hours The patient's chest should be covered with a wadding jacket cut in two sections and pinned over and under the arms. During the first stage of the disease we must allay the general nervous and vascular excitement. Aconite and ver- atrum viride are the best remedies for this purpose. I pre- fer the former as being safer and fully as efficient as the latter. Ten grains of sodium bromide, one half drop of PNEUMONIA. 233 tincture of aconite root and twenty drops of liquor of the acetate of ammonia or of sweet spirits of nitrous ether, every two hours, makes a useful combination for this stage. If much pain is present there is no objection to a hypoder- mic of morphine or the addition of one-half agrain of codeine to the above mixture. If the skin is dry and burning and there is headache, three grains of phenacetine with two grains of sulphate of quinia (in capsules) every three or four hours will relieve these conditions as well as modify the temperature if it is high. If there is severe pleurisy pain, especially in the apical pleuro-pneumonias of children, a hot poultice will give much relief. There are objections, of course, to their unskillful application, but these do not apply when a little care is taken. It is well to begin the treatment of a case with moderate calomel.purgation. The bowels should not be allowed to become constipated at any stage, especially if the patient is on a milk diet, as the dry feces may become impacted in the rectum and have to be dug out. Teaspoonful doses of Hus- band's magnesia will be useful for a laxative during the progress of the case. The cough and expectoration may be made easier by giving from five to seven grains of muriate of ammonia, one- sixth of a grain of codeine and twenty drops of liquor of the acetate of ammonia in syrup of tolu every two or three hours. It is well to continue this throughout the disease and to combine with it five grains of potassium acetate to promote elimination by the kidneys, the codeine being left out if necessary. Plenty of water should be allowed the patient between the hours of feeding. Tepid sponge baths should be given twice daily. The patient's mouth should be rinsed frequently with equal parts of peroxide of hydrogen and water. The temperature need cause no alarm unless it keeps persistently in the neighborhood of 105° F., which is seldom the case if the capsules mentioned above are used. If it does we may resort to cold baths, cold applications, or ice coils as is deemed best. The heart should be carefully watched. The strain is on the right ventricle and can be 234 PNEUMONIA. best judged by the force of the second pulmonic sound. When this becomes louder, more snappy and high-pitched, the right side of the heart needs support. This aid is best given by strychnia. It is good policy to begin the adminis- tration of strychnia early, giving 7V of a grain three or four times in twenty-four hours. When the right heart shows strain the strychnia should be pushed, giving ^ of a grain every two to four hours by hypodermic. In desper- ate cases ^3 of a grain may be given every two hours. One young man,seen in consultation, took,.from the sixth to the ninth day, TV of a grain of strychnia every two hours night and day, and during a portion of this time TV every hour for six doses. One to two ounces of whisky was also given every two hours for a portion 6f the time. He re- covered. Digitalis may be used conjointly with the strychnia, in which case digitalin is preferable, using about ^ of a grain every four to six hours. As a rule I have not em- ployed digitalis except in cases of pneumonia associated with chronic cardiopathies. If, after the fourth or fifth day, the pulse tends to become faster and the patient rest- less or delirious, whisky in ounce doses should be given with the strychnia every two to four hours until the crisis is reached. I find, however, that I have used whisky very seldom. At the time of crisis if the temperature falls below 98° F., and the pulse is weak and there is profuse perspir- ation, a couple of ounces of whisky in hot water, dry fric- tion of the body and a hot, dry blanket will aid matters materially. Venesection is seldom employed at present. There are times, however, when it is useful. In the first stage of sthenic cases with a full, high-tension pulse and great rest- lessness, the abstraction of a few ounces of blood will give great relief. Again, in the later stage, when there is much lung tissue involved and the mechanical strain on the right heart is great, venesection may be much safer and quicker than to attempt to drain the blood into the peripheral vessels by the vaso dilators, especially as these drugs are de- cidedly dangerous at this stage of the disease. PNEUMONIA. 235 Oxygen gas is of great utility Lin pneumonia, both in those cases where dyspnoea and cyanosis seems to depend largely on the reduction:]of breathing space, and in those where prostration is so great that the labor of breathing is telling on the vitality of the patient. While I cannot say that I have known oxygen.to be the direct means of saving life, I am sure it has prolonged life in a number of instances and in others has done much towards tiding the patient over the dangerous period. Nitro-glycerine is a remedy which, if used at all, should be restricted to the first stage. In the advanced stages, especially if the heart is weak and toxaemia is well marked, nitroglycerine is a dangerous remedy to use. Among the special forms of treatment devised for pneumonia.hydrotherapy has always been prominent. Cold in the form of cold baths, applications, affusions, ice pack or ice coil is variously recommended. Baruch advises tubbing in children, with the water at 95° F., reducing ac- cording to circumstances; for adults, the cold compress on front or back of chest with the water at 60° F.; if there is delirium, precede by cold affusions. Ice packs and coils are recommended by many and undoubtedly are attended with benefit in many instances. In children, however, they are more difficult to apply than are warm applications. Hayem thinks that cold baths are more powerful for good in child- ren than in adults. Bozolo says that baths are well borne; do not produce collapse; lower the temperature for a consider- able time, and give the lowest mortality rate of any form of treatment: they should be given every three hours. Hot baths have teen recommended by some but have not been much employed. Large doses of digitalis as a routine treatment have been actively advocated by Petresco, who gives from 90 to 100 or 140 grains of the powdered drug daily. His reports are favor- able both as to its action on the temperature and on the mor- tality of the disease. Barth advises a maximum daily dose of 45 grains of the powdered leaf in infusion. Maragliano recently claims to have established beyond doubt the spe- cific action of digitalis on the pneumococcus. A small amount 236 PNEUMONIA. will kill the cocci in cultures and will also neutralize the toxicity of pneumonia toxins in injections. Patients are able to take larger doses of digtalis because of its effect in neutralizing toxins. If this be correct it may help to ex- plain the seemingly inexplicable statements of Petresco. Creasote internally (Casati) and by inhalation (Robinson), formate of soda (Rochon) and many other remedies have been specially advocated in the treatment of pneumonia, but no specific value has become attached to them. In delayed resolution of pneumonia we may adopt the conclusions of Stengel: that in cases showing a tendency to delay, as manifested by dullness and persistent broncho- vesicular respiration; systematic breathing exercises, pul- monary gymnastics, etc., are important; where marked dullness persists, counter-irritation, tonics and stimulants are indicated; the production of aseptic abcesses are of doubtful utility and often impracticable. In the various types of pneumonia the treatment must be varied to meet the indications. We must remember, however, that the symptoms, regular and ^irregular, are mainly toxic in nature; that cerebral symptoms are more likely to occur in cases showing marked toxaemia, come early and have no relation to the amount of lung tissue in- volved. The complications of pneumonia may modify the man- agement of the disease as they may become, temporarily, the chief issue. They are to be managed as individual affections with due regard to their connection with the pneumonic condition. CHAPTER XI LOBULAR PNEUMONIA. Lobular pneumonia (broncho- pnenmonia, catarrhal pneu- monia) is an inflammation of the lung tissue occurring, as a rule, secondary to inflammation of the bronchi. For- merly it was regarded as due to direct extension of catarrhal inflammation from the tubes to the alveoli, but the presence of various septic organisms in lobular inflammation of the lungs has modified this view more in accordance with the clinical facts. Undoubtedly, in very young people, the so- called simple form of lobular pneumonia occurs from direct extension of a catarrhal inflammation of the bronchi. On the other hand we find isolated areas of lobular inflammation occurring in portions of the lungs where there has been no previous bronchitis and which can only be explained by the infection, by aspiration or otherwise, of the lobules in- volved. ^Etiology.—Mixed infection is rather the rule than the exception in lobular pneumonia. The various organ- isms which have been identified with this form of pneu- monia are the streptococcus pyogenes, the pneumococcus of Friedlander, the staphylococcus, the colon bacillus, the micrococcus lanceolatus and the tubercle bacillus. These organisms may present singly or in any combination in lob- ular pneumonia. [In Pearce's analysis of forty-six cases, the most frequent single infection was by the streptococcus, and the most frequently combined organisms were the streptococcus, staphylococcus pyogenes aureus and pneu- mococcus.] Recognizing an anatomical and clinical distinction between bronchiolitis and lobular pneumonia, it is appar- ent, in view of modern bacteriological knowledge, that di- rect infection or irritation of the lobules, through the aspir- ation into them of organisms, or secretion, or both, is fre- 238 LOBULAR PNEUMONIA. quently the cause of lobular pneumonia, and that the latter occurs entirely independently of contiguous bronchial in- flammation. While lobular pneumonia is most frequent in infancy and old age, it may occur at any time of life in weak and de- bilitated subjects. Any influence which weakens individ- ual resistance predisposes toward the development of this form of pneumonia. The various causes of bronchitis, irri- tation of the respiratory tract by the inhalation of gases, dust, particles of carbon or metals, the aspiration of food, saliva, blood or discharges of various kinds into the lungs, infection by the organism of actinomycosis, the bacillus of glanders or the specific infections of measles, whooping- cough, diphtheria or variola may cause lobular pneumonia. Bronchitis and tuberculosis are the diseases of the lungs which most frequently cause lobular pneumonia. Tubercu- lar lobular pneumonia is a marked feature of the clinical history of acute pulmonary tuberculosis. Pulmonary in- farction, abscess, gangrene, collapse, and traumatism may cause lobular pneumonia. Pulmonary collapse, which sometimes seems to precede the inflammation, probably acts as a cause of the latter by modifying the circulation and re- sistance of the alveolar tissues, thus favoring infection. The exanthemata, the infectious fevers, rickets, dysentery, and extensive burns of the skin (Wilks) may be accompanied by lobular pneumonia. Morbid anatomy.—Lobular pneumonia is more fre- quently bilateral than any other form of pneumonia. It occurs in any portion of the lungs, though, with the excep- tion of tuberculous pneumonia, it is most often found in the lower portions. It may occur as scattered areas of lobular consolidation (disseminated pneumonia), or the aggregation of numerous areas of consolidation may resemble, clinically and anatomically, the croupous variety of pneumonia. Iso- lated patches involving but two or three lobules may occur. The lesions of lobular pneumonia and its associated conditions present a great variety of anatomical changes. Bronchitis is most always present, but in some cases of tu- bercular or other infection by aspiration, previous bronchial LOBULAR PNEUMONIA. 239 inflammation of that particular area will not be found. More or less congestion, oedema and emphysema will be present. Large or small areas of collapse may be present, particularly at the base or along the free borders of the lower lobes of the lungs. Areas of the lobular pneumonia are conical in shape with their base outward like collapsed lobules. The base of the pneumonic patch, if at the surface, is raised, never depressed. The mass is less pliable and more nodular than that of collapse and its pleural surface is more apt to be covered with lymph. Pneumonic patches may be distinct or ill defined. They vary in size from a pea to a hazelnut. On section they are dark red or greyish with yellowish cen- ter; soft, friable, smooth or slightly granular. The patches may be discrete or form racemose groups. When aggre- gated in large areas the surface of the cut lung is not as uniform as in croupous pneumonia, greater variety of stage being exhibited. Fusion <3f lobules, irregular peripheral distribution and slight or absent pleural exudate distinguish lobular from lobar inflammation. Fused patches of lobular inflammation may be paler, drier and firmer than usual and resemble gray hepatization. In the early stages of lobular inflammation the alveoli contain fluid, red corpuscles and leucocytes; the alveolar epithelium is swollen and graular. The alveoli become filled with a mass of cells consisting mainly of leucocytes, in the acute form, and of epithelium in the more chronic variety. In septic cases haemorrhagic exudation, suppura- tion, or sloughing and gangrene may occur. The walls of the finer bronchi are infiltrated with small round cells and their lining proliferates. Peribronchial infiltration is usu- ally present. Resolution through fatty metamorphosis, expectoration and absorption, is the usual termination, though this pro- cess is slower than in croupous pneumonia and may occupy a sufficient length of time to induce thickening of the alve- olar and bronchial walls and dilatation of the finer bronchi. In chronic cases, fibrosis and bronchial changes may be marked. In tubercular cases caseation, encapsulation or 240 LOBULAR PNEUMONIA. necrosis results. Enlargement of the bronchial glands, emphysema, collapse, carnification and hypostatic pneu- monia are frequent accompaniments of lobular pnemonia, Clinical history.—There is no disease of the lungs which presents so varied a clinical course as does lobular pneumonia. Occuring at the extremes of life and in associa- tion with various infectious disorders; favored by toxic and septic conditons and lowered vitality, it exhibits a complex- ity of physical signs and clinical symptoms closely inter- woven with those of the affection of which it is a more or less intimate component part. The onset of lobular pneumonia is not so sudden as that of croupous pneumonia, nor is its advent marked by a chill. In association with the infectious diseases of children, the advent of the pneumonia may be marked by convulsions, delirium or vomiting; more often it is announced by a more or less sudden rise in temperature, dyspnoea and cough. In old people the advent may be* very insidious and marked only by great prostration and slight rise in temperature and respiratory rate; cough may be entirely absent. The temperature range is irregular. In children it may be of high as 104°—105°. Marked remissions and exacerba- tions occur. In old people the temperature may not go above 101°. Defervescence is by lysis, a critical period not being observed. The breathing is rapid, shallow, and var- ies from forty to ninety per minute, being most rapid in children. The pulse is rapid, small and feeble, and varies from one hundred and ten to one hundred and eighty. The cough is short, hacking, dry and may be painful. Ex- pectoration is scanty, slightly viscid and may be absent in children or old people, and in the latter there may be no cough. Dyspnoea, cyanosis and orthopncea may be present. Lobular pneumonia is a marked feature of the clinical history of acute pulmonary tuberculosis in which its re- curring attacks mark the progress of this fatal disease. Again, the inception of the tuberculous process may be characterized by a lobular pneumonia. Haemoptysis is a frequent symptom of these attacks of tubercular lobular LOBULAR PNEUMONIA. 241 pneumonia, as in the following case recently referred for opinion: Mrs. T. aged 23. Good health until three months ago when she developed a slight cough. Three weeks ago the cough became worse, there was fever, loss of appetite and strength. Two weeks ago began to spit up blood and has continued to expectorate bloody mucus and at times clear blood. Pulse, 110; temperature, 101°. Examination showed a well marked lobular pneumonia involving the upper third of the superior lobe of the right lung. Lobular pneumonia may occur in connection with bron- chitis and in the absence of bronchiolitis, probably through the aspiration of secretion into the lobules. The following instances illustrate this: Man aged 38. Tinner by trade. Has a slight attack of bronchitis which has existed about a week. Two days be- fore presenting himself he felt worse; his cough was drier, breathing somewhat shorter and he felt feverish. His temperature, at the time of examination, was 101°; pulse, 100. Auscultation showed harsh breathing with a few mu- cous rales in the upper part of the right lung. In the ante- rior axillary line at the level of the sixth rib on the left side there was an area about the size of a silver dollar which showed bronchial breathing with few fine crackling rales at the periphery. The respiration between this point and that of the bronchitis in the upper lobe was normal. Examination, a week later, showed resolution to be well advanced in the small pneumonic area, while there was another area, about two inches in diameter, at the lower angle of the left scapula, which showed dullness and bron- chial breathing. This area cleared up in about a week and the patient was discharged. Boy aged 9 years. Has been troubled more or less for two years with an asthmatic form of bronchitis. Three days before presenting himself at the clinic he became worse; his cough became dry and irritating, his breathing rapid and short, there was fever and thirst and he com- plained of some pain beneath the left shoulder blade. At the time of examination his temperature was 101.5°; pulse, 110. There were a few moist, and occasional sonorous rales throughout both lungs. In the lower posterior por- tion of the left lung there was a well defined area of consol- idation about an inch and one-half in diameter, surrounded 242 LOBULAR PNEUMONIA. by fine sub-crepitant rales. Over this area the breathing was distinctly bronchial in character. One week later the boy returned feeling much better. His temperature was normal, pulse, 80. Auscultation of the inflamed area showed harsh breathing with mucous rales. The duration of lobular pneumonia is indefinite. It may last from a week to three or four weeks. If only a few aggregated lobules are involved resolution may be ex- pected in a week or ten days. If there is successive invasion of'segregated areas, the course of the disease may be much prolonged. This is most likely to occur in the tubercular pneumonias of acute phthisis. Lobular pneumonia is most fatal in children before the age of five years, and when secondary to measles and whoop- ing-cough, and in old people in connection with bronchitis. Symptoms and diagnosis.—The symptoms of lobular pneumonia are varied and irregular. When the disease oc- curs in connection with measles, whooping-cough or with bronchiolitis, it is ushered in by fever, rapid pulse and breathing, possibly some dyspnoea; the cough changes, be- coming dry, hacking and annoying, with scanty, more viscid expectoration. In children, especially in connection with bronchiolitis, the rhythm of the breathing is changed; the respiratory pause being before, instead of after, expiration. There is rapid, forcible inspiration, a pause, explosive expiration immediately followed by inspiration. Short pauses in re- spiration may occur or the breathing may assume the Cheyne-Stokes type. When much bronchitis is present or a considerable number of lobules are involved, the breathing will be difficult and dyspnoea will be present. The alas nasi show respiratory dilation, the accessory muscles of respiration act strongly. If bronchial obstruc- tion is marked, the forcible action of the diaphragm causes inspiratory depression of the epigastrium. General cyanosis and lividity are unfavorable signs. The dyspnoea does not correspond to the physical signs, as a deep-seated lesion may show marked dyspnoea and but LOBULAR PNEUMONIA. 243 few physical signs, while a more diffuse affair with high temperature may be accompanied by little dyspnoea (North- rup.) The dyspnoea may accord with the degree of ob- struction from bronchitis. When bronchiolitis is severe, dyspnoea, cyanosis and lividity are more pronounced, the respiratory tract becomes less irritable, cough ceases and the patient seems better, but as the right heart begins to dilate there is increased cyanosis and lividity, cold ex- tremities, inability to cough, diminished frequency of breathing, rapid, feeble pulse, dilated pupils, insensible corneae and death by asphyxiation. In old people the symptoms may be very indefinite. The fever may be slight, cough absent, breathing not very rapid, and dyspnoea absent if bronchitis is not severe, and only a careful physical examination will indicate the nature of the trouble. When lobular pneumonia occurs secondary to bronchitis we may be able to trace the extension of the bronchial in- flammation inwards by the appearance of small mucous, sub crepitant and fine crepitating rales,or, the first evidence may be that of consolidation in a hitherto uninvolved area of lung. The crepitant rale is definative of pneumonia and seldom heard in lobular pneumonia. Harsh breathing or broncho-vesicular breathing with a variety of moist rales are the usual signs of the early stages. When consolidation has occurred we may get bronchial breathing and bron- chophony if the area is large enough or if the associated bronchitis does not obscure these signs. A small, superficial area of consolidation without much or any bronchitis, will give distinct signs of consolidation, while a much larger but more deeply seated area accompanied by bronchitis which obstructs the tubes, will furnish very indefinite signs.* Percussion dullness depends on the same factors as the breath sounds, but is not so reliable, as the pitch of the note is more effectively modified by intervening areas of normal lung tissue. It is only when isolated areas of superficial *Xorthrup warns against mistaking the tubular quality of the breathing heard between the scapula? in dyspnceic children, for bronchial breathing. This mistake is not likely to occur if more attention is given to the pitch of the expiratory sound than to the quality of the respiratory sounds. 244 LOBULAR PNEUMONIA. inflammation, or large areas from aggregation of inflamed lobules, occur,that percussion will give reliable information. In children when numerous areas of collapse are added to lobular inflammation, and in old people when carnification of the lung, hypostatic pneumonia, lobular pneumonia and collapse are inextricably mingled in the base of the lungs, the physical signs are decidedly indefinite, there being simply lost motion, partial dullness and suppressed respira- tory sounds. When, through the aggregation of numerous inflamed lobules, considerable areas of consolidation occur, the disease may resemble croupous pneumonia. The secondary nature, slower development, the absence of chill, lower and more irregular temperature, more rapid pulse, slower res- piration, the involvement of only a portion of a lobe, its bilateral occurrence and the presence of disseminated areas of consolidation in other portions of the lung, together with the demonstration of streptococcus, staphylo- coccus, or a mixed infection, will differentiate. Bronchiolitis with extensive collapse of the lung, in children, is to be distinguished from pneumonia chiefly by the development of rapid breathing, dyspnoea and cyanosis before or without a corresponding elevation of temperature. The physical signs may be practically identical. However, this condition is, as a rule,but a precursor of pneumonia, and the distinction is, therefore, not important. In infants, the differentiation between pleurisy and pleuropneumonia may be impossible except by the use of exploratory puncture. In older children a considerable degree of pleurisy is more apt to be associated with croupous than with lobular pneu- monia. Enteric fever and meningitis may closely simulate lobular pneumonia. Acute disseminated tuberculosis of the lungs may be, in the beginning, impossible of differentiation from lobular pneumonia except through the presence of the bacillus tuberculosis. A lobular pneumonia constitutes the essential anatomical lesion of this form of phthisis and the nature of the disease is determined by demonstrating the nature of the infection. LOBULAR PNEUMONIA. 245 The most unfavorable symptoms of lobular pneumonia are rapid, feeble or irregular pulse, sudden fall in tempera- ture, cessation of cough, slowing of respiration with changes in its rhythm, the appearance of stupor, delirium, cyanosis or lividity. Treatment.—The management of lobular pneumonia is largely symptomatic. It is not apparent that specific treatment can be of benefit, unless, through the agency of some serum, such as anti-streptococcus serum, we can avoid the irregular terminations which are likely to occur in inflammations depending on severe infections with pyogenic organisms. In lobular^meumonia in children the patient should be placed in a well-ventilated room. If the cough is loose and the child perspires, the air should be fresh and dry. If the cough is tight, the expectoration viscid and scanty and the skin dry and hot, a tent may be arranged around the bed and the air be kept charged with steam by some sort of va- porizing apparatus. The diet should be milk or some of the prepared milk or beef foods. Lime-water should be added to the milk and the food should be given in small quantities every three hours. Unless pain prevents, the position of the child should be frequently changed so as to favor deeper inspiration, especially when bronchiolitis is present. Stimulant expectorants must be given. Muriate or car- bonate of ammonia, senega, etc. Two grains of chloride of ammonia, one-fourth of a drop of tincture of aconite root, fifteen drops of the liquor of the acetate of ammonium may be given every two hours to a child two years old. [Dr. Burney Yeo recommends benzoate of soda internally, and a warm, alkaline spray containing bicarbonate of soda, gly- cerine and carbolic acid.] When the cough is troublesome it must be controlled with small doses of paregoric, Dov- er's powder or codeine. Care must be exercised in the ad- ministration of these sedatives, especially when bronchio- litis is present, as they may add to the danger of paralysis and obstruction of the bronchial tubes and consequent col- lapse of the lung. When cyanosis is present, especially in 246 LOBULAR PNEUMONIA. old people, oxygen is of great service and may be adminis- tered more continuously and effectively when warmed by passing it through a spiral metal coil placed an warm water (Fowler). In children, the chest should be protected with a cotton- batting jacket. When pleurisy is present a poultice is most useful in relieving pain and nervous dyspnoea, It should be applied so as not to obstruct respiration, should be covered with dry, warm flannel and not be allowed to be- come cold. If expectoration is scanty and mucus obstructs the tubes, an occasional dose of one grain of powdered ipe- cac may relieve this condition, or„ if the obstruction threat- ens asphyxiation, larger doses (five to fiftefn grains; five grains for a child one year old) to produce vomiting, may be necessary, In asphyxiation from associated collapse of the lung, inflation of the lungs has been recommended. The abdomen is tightly wrapped with a bandage, the nose closed with the operator's fingers and his mouth applied to that of the child. This method is of doubtful utility. If the pulse and respiration become very rapid, strychnia must be given in stimulant doses and preferably by the hypoder- mic method. In children, from one one-hundredth to one-fif- tieth of a grain may be used every two to four hours; in adults from one-thirtieth to one-twentieth of a grain at similar intervals. Many cases may be tided over the dan- gerous period by the energetic but careful use of strychnia. Various hydrotherapeutic measures are recommended for the relief of high temperature and dyspnoea in lobular pneumonia. Undoubtedly these measures are the most val- uable at our command for this purpose, when properly mod- ified to suit the circumstances of the individual case. Jur- gensen recommends a twenty minute bath at a tempeiature of 77g to 80Q P., combined with cold sponging of the chest; the bath to be repeated whenever threatening symptoms re- appear or the temperature reaches 103° P. Wilson Fox ad- vises a cold bath (from one to three minutes) at a tempera- ture of 65° to 70° F., with cold applications to the chest. Pye-Smith advises tepid sponging and tepid baths. Fow- ler advises, for high temperature, dyspnoea and cyanosis, LOBULAR PNEUMONIA. 247 hot baths (104° to 110° F.) with cold affusions (60Q to 65° F.) over the chest and back. Whatever degree of cold we em- ploy, the best evidence of its efficiency is diminished fre- quency of pulse and respiration. No absolute rule can be laid down based on the temperature. Children bear high temperature well, and a temperature of 103° cannot be held as abstract evidence of the necessity of a cold bath. It is rather the combination of high temperature, pulse and res- piration, which indicate the employment of hydrotherapeu- tics. My own experience is very favorable to cool sponging frequently repeated, or bathing, for from five to fifteen minutes, at a temperature of 98° to 100Q F. The child can then be wrapped in a wet towel and a blanket and allowed to rest for from fifteen minutes to an hour when it should be gently rubbed and wrapped in a dry blanket. Northrup recommends a convenient method, of placing the nude child in a hammock made of a towel and lowering it into the bath tub, bathing its face meanwhile with the same water as is used for the general bath. This method avoids much hand- ling of the child and is convenient, In old people, baths, if used at all, should be confined to sponging, as the exhaus- tion incident to the administration of baths is greater than in children. When the circulation shows evidence of failure, digi- talis and alcohol may be indicated temporarily, though these remedies will be less often necessary if strychnia is given early enough and in sufficient doses. In the management of the convalescing period we must use general and special calisthenic exercise, deep breath- ing exercises, climatic treatment, nutritious diet, tonic med- ication, as cod liver oil, guaiacol, iron and quinine, iodide of iron, syrup of hydriodic acid, mineral acids, in short, ev- ery medicinal or hygienic means which will increase the pa- tient's strength and respiratory capacity and lessen the dag- ger of secondary processes in the lungs. 248 PULMONARY FIBROSIS. Fibrosis of the lung (chronic pneumonia, interstitial pneumonia, cirrhosis of the lung) is the result of a produc- tive inflammation produced by influences of moderate sever- ity but of protracted course. It is characterized by grad- ual increase in the connective tissue of the lung and results in induration of the pulmonary tissue and obliteration of the alveoli of the lung. It is evident that there is no disease of the lungs with which fibrosis, in some degree or extent, may not be associ- ated; while in some instances, as in tuberculosis, it consti- tutes a conservative process of nature, and a necessity to to the limitation of the infective process. We are not sur- prised, therefore, to find the aetiological nomenclature of fibrosis of the lungs resulting in the description of several special forms of the disease which, while they may have certain more or less distinctive clinical features, have yet no generic or pathological individuality and which are not entitled to be described as special forms of pulmonary dis- ease. Such varieties of fibrosis as pneumoconiosis, syphi- litic sclerosis of the lung, etc., will therefore be considered as types of the progressive induration characteristic of fibrosis of the lungs. The essential features of fibrosis of the lungs is the in- crease of the tissues of the walls of the alveoli and of the interalveolar, interlobular and sub-pleural tissues. Topo- graphically, any one of these tissues may be chiefly affected, though as a rule they are all more or less involved. ^Etiology.—Fibrosis of the lungs occurs secondarily to some disease of the alveolar or bronchial wall or pleura. Its most common cause is the chronic disseminated form of {Tulmonary tuberculosis. Lobular pneumonia, especially in early life, is frequently the cause of fibrosis starting as a thickening of the alveolar walls. Bronchiectasis, pulmon- ary collapse, bronchial obstruction from pressure of an aneurism, and new growths in the lung, pleura or oesopha- gus may induce fibrosis of the lung. In cases of protracted resolution of croupous pneumonia there may be a slight in- PULMONARY FIBROSIS. 249 duration of the alveolar walls which in rare instances may cause extensive fibrosis of the lung. The following case of diffuse fibrosis was probably sec- ondary to pneumonia: Woman aged 42 Married. Always been healthy with the exception of an attack of pneumonia nine years ago from which recovery was slow. For the last two years has had cough with gradually increasing dyspnoea on exertion. Spits up a little white, glairy mucus, particularly in the morning. Temperature 98.5C; pulse 98. Has lost some flesh. Has no pain and appetite and digestion are fair. Examination shows marked contraction of the left side of the chest with great restriction of motion on that side. There is compen- satory enlargement of the right side of the chest. The heart apex is displaced upward and to the left. The finger ends are not clubbed. Vocal fremitus is marked all over the left side and the percussion note is high-pitched and has a woody, hard tone slightly tympantic in quality under- neath the left clavicle. Very little air enters the left lung and the respiratory murmur is high in pitch and of a tubu- lar quality with prolonged expiration in the upper por- tion of the lung. No rales are heard except an occasional mucous click. There is exaggerated or puerile breathing in the right lung. No tubercle bacilli can be found in the sputum. In this case the length of time the disease has probably existed; the absence of fever, night sweats, emaciation, destructive processes in the lung and of bacilli would seem to refer the cause back to the previous attack of pneumonia. A special form of pneumonia is described (subacute in- durative pneumonia.—Kidd, primary parenchymatous pneu- monia.—Buhl, Heitler) in which fibrosis of the lung is a chief lesion. Syphilitic gummatous growths in the lung may be asso- ciated with interstitial fibrosis having a tendency to extend along the vessels or tubes. There is also a diffuse form of fibrosis occurring in children with congenital syphilis. This form is rare and not much is known about it. The inhalation of solid, irritating particles of dust, met- als, etc., is a frequent cause of fibrosis of the lungs. Nu- merous designations have been given fibrosis from this cause. When due to particles of carbon it has been known as anthraco- 250 PULMONARY FIBROSIS. sis; siliceous particles, as chaliosis or silicosis: of metallic particles, as siderosis; of cotton particles, as byssinosis, etc. Pneumoconiosis is the term usually employed for this variety of fibrosis, though such names as coal miner's phthisis, pot- ter's phthisis, knife grinder's phthisis, etc., are sometimes used. Any dusty occupation may give rise to pneumoconi- osis.* The intimate association of fibrosis and tubercular changes in the lungs has occasioned much doubt as to the occurrence of non-tubercular pneumoconiosis, and as the lat- ter disease is liable to show secondary tubercular infection, it may be very difficult to determine the nature of the pri- mary changes. It is, however, considered, by the majority of observers, that tubercular infection is not necessary to the development of pneumoconiosis. "Corrigan's pneumonia" (interstitial) which was claimed to develop without apparent cause, Sir Andrew Clark's "fibroid phthisis," and Harris' "secondary" interstitial pneu- monia are all conditions of the same inherent nature, vary- ing^ perhaps, in their aetiological factors but all manifes- ting the general tissue change of fibrosis of the lungs. With empyema or in connection with long standing ef- fusions in the pleurae we may have fibrosis of the lungs de- velop either as dense bands of thickened interlobular con- nective tissue or as a more general fibrosis. Morbid anatomy. —The morbid anatomical features of the lung in cirrhosis are necessarily varied in degree and extent. It is not necessary to review here the degrees of fibrosis that may be associated with the various pulmonary lesions. In general and well advanced fibrosis of the lung the organ is diminished in size. The tissue is dense, °firm, ♦Claisse and Josue conclude that the lesions of pneumoconiosis are not due to direct action of dust but to infectious processes which are superadded; verv small dust particles may migrate through the pulmonary tissues without causing dis- turbance; large particles produce, by traumatism, a soil upon which inhaled or- ganisms develop; morbid conditions influence pneumoconiosis only when they are of long duration; lesions of the lymph nodes increase pneumoconiosis by im- pairing the circulation and the elimination of dust particles by the lymphatics; pneumogastric lesions favor pneumoconiosis by destroying the resistance of the upper air tracts and by producing vaso-motor troubles. pulmonary fibrosis. 251 smooth and may be, in spots, almost cartilaginous in con- sistency, It may be deeply and irregularly pigmented. The alveolar structure may be entirely in places. The bronchi are irregularly dilated and may contain irritating secretions which, when not removed by expectoration may give rise to secondary inflammation, ulceration or excava- tion; caseous changes are absent in non-tubercular cases. The pleurals thickened and may be adherent. When secondary to croupous pneumonia these changes begin in the walls of the alveoli and ultimately involve the interlobular tissue. According to Green and Goodhead the intra-alveolar products of a croupous pneumonia have been known to become vascularized and develop into fibroid tissue. In lobular pneumonia and pneumoconiosis the changes begin in the alveolar walls but the peribronchial and interlobular tissues are more actively concerned in the process. When secondary to pleurisy the tissue growth of fibro- sis extends from the thickened pleura along the interlobu- lar lymph vessels and spreads to the peribronchial tissues. The lung may be thus encapsulated or traversed by numer- ous bands of dense fibrous tissue. In collapse of the lung there are haemorrhagic and pig- mentary changes, fibrosis of the alveolar walls, destruction of the epithelium and fusion of the alveolar surfaces. Clinical history.—The clinical history of fibrosis of the lungs is necessarily varied. The minor degrees of fibro- sis have no history apart; from that of the lesions with which they may be associated and which they modify. When fibrosis is secondary to croupous, lobular pneu- monia or chronic pleurisy there is a history of protracted and incomplete recovery from these conditions. There is cough with frothy, mucopurulent or nummular expectora- tion. Haemoptysis may occur even in non-tubercular cases. More or less dyspnoea will be present. Fever may not be present and will not be high unless sepsis from excavation or bronchial dilatations should occur. The course of the dis- ease is protracted and the later stages marked by cardiac failure. 252 PULMONARY fibrosis. In pneumoconiosis there is a history of dusty occupa- tion, of a bronchitis which had no definite time of onset and which is troublesome in the morning and on changing from a,warm to a cool atmosphere. The expectoration is not free and consists of glairy mucus which may be pigmented. Recurrent exacerbations of the bronchial catarrh occur. Dyspnoea gradually becomes troublesome. Asthmatic symptoms may be prominent. Loss of strength and flesh occur and the patient seeks quietude in a warm atmosphere. In syphilitic fibrosis the clinical history will differ but little from that of other forms. The cough is the earliest and most prominent symptom. Expectoration, fever, etc., have the same causal relations as in other varieties of fibro- sis. The pleurogenic form of fibrosis is illustrated in the history of the following case: Boy aged 12 years. Good family history. When seven years old had an attack of illness, probably some form of acute pneumonia, which was followed by an empyema. The pleural fluid was aspirated several times and finally an im- perfect drainage was instituted. The discharge from the pleura stopped after several months. He now suffers slightly from cough and considerably from dyspnoea on exer- tion. On examination we find much retraction of tie left side below the fourth rib. The heart is displaced backward and upward, the stomach toward the right and downward and there is an evident degree of scoliosis. The upper part of the left lung is dilated and there is inspiratory retraction of the left side over the affected area and no air can be heard passing in or out of this portion of the lung. Symptoms and diagnosis.—Aside from the indefinite subjective symptoms the signs of fibrosis are mainly physi- cal. The affected side will show restricted motion in part or in whole and may be considerably smaller than the oppo- site side. If the fibrotic changes are restricted to the lower portion of the lung, marked contraction of this portion may be shown with compensatory enlargement of the upper por- tion. There may be decided displacement of the heart up- wards, backwards, or to the right if the right side is af- fected. In extensive fibrosis marked clubbing of the finger ends may be present. pulmonary fibrosis. The vocal fremitus is usually increased over the affected area though it may be absent over the lower portion of the lung if the latter is very hard. The percussion note is high- pitched and of a dull wooden, or amphoric character if there are bronchial dilatations or cavities. Increased vocal reson- ance, broncho-vesicular breathing, bronchophony or pector- iloquy with high-pitched, prolonged expiratory sound and possibly bronchial or cavernous breathing may be heard if there is complete consolidation or cavities. Various sized mucous rales, gurgles, or mucous clicks may be heard. The physical signs, as well as the subjective symptoms, are modified by the degree of emphysema and bronchial dil- atation which may have developed. In dust phthisis the discoloration of the sputum or the presence of foreign substances in the expectorated matter may indicate the nature of the disease. The following case of pneumoconiosis presents the usual history: Man 47 years old. Bohemian, married. Good family history. Wood turner by trade. Has been employed for years in a mill at very dusty work. Has coughed for sever- al years, more in winter than in summer. Lately has been free from cough only when in a warm atmosphere. Expec- toration has become more abundant, thicker and recently decidedly fetid. For the last four months has been cough- ing up a quantity of foul smelling mucus in the morning. He is decidedly dyspnceic and at times slightly cyanosed on exertion. His finger ends are markedly clubbed. Temper- ature 99.5°; pulse 100. Examination shows retraction of the lower part of both sides of the chest, particularly of the left side. Lateral ex- pansion is almost entirely lost. There is increased fremitus, vocal resonance and high-pitched percussion note all over both lungs. The percussion note, over the region of the fourth left rib just inside the mammillary line, is hollow in character and there are gurgles, pectoriloquy and cavernous breathing in the same region. Numerous rales and breath- ing of a tubular quality are heard throughout the lower two- thirds of both lungs. No bacilli in the sputum. These cases are likely to develop tuberculosis during their course and after this has occurred a correct diagnosis may be difficult. 254 PULMONARY fibrosis. Besides the congenital syphilitic fibrosis of children there may occur various degrees of fibrosis and secondary conditions resulting from acquired syphilis. These condi- tions may or may not be associated with gummata, or ulcer- ative lesions of the respiratory mucosa, and constitute the so-called cases of syphilitic phthisis. The following case is probably one of syphilitic fibrosis of the lungs though the diagnosis rests on the absence of bacilli from-the sputum, the subject being alive: Man aged 39 years. Waiter by occupation. Family history good. Had a hard chancre eighteen years ago which was followed by sore throat and a skin eruption. Never had pleurisy or pneumonia. For the last five years has had a cough which is worse in winter and which has been espec- ially troublesome for the last year. Expectoration which was formerly scanty and frothy has lately been muco puru- lent and at times somewhat offensive. Has lost flesh and strength and there are occasional pains through the chest. Examination shows loss of motion of the lower portion of both lungs with signs of marked induration of the left lung below the fourth rib and of the posterior and lateral portions of the right lung below the sixth rib. No bacilli have been found in his sputum. He has improved consider- ably, in a general way, on iodide of potassium and biniodide of mercury. The diagnosis of localized fibrosis of the lung is not difficult and rests on the character of the physical signs. In the diffuse varieties the main question is whether they are, or are not, tubercular. This question Is determined, principally, by the presence or absence of tubercle bacilli. Non tubercular fibrosis is usually unilateral and begins in the lower lobes in contrast with the characteristic apical in- vasion of the tubercular form. Rare cases of primary basic tuberculosis of fibrotic nature may occur and be difficult of diagnosis but here we must remember the probability of tuberculosis occurring in connection with fibrosis which was primarily non-tubercular. Pleural effusion which has not fully absorbed and which has prevented expansion of the lung may closely simulate fibrosis. There may be a greater degree of retraction than the same extent of fibrosis would occasion, while the voice PULMONARY FIBROSIS. 255 and breath sounds will be diminished rather than increased. When bronchiectasis is added to this condition the diagnos- tic difficulties are increased. Pulmonary fibrosis with bronchiectasis may be very dif- ficult to distinguish from an empyema or hepatic abscess which has perforated the lung. The diagnosis may rest on the result of an exploratory puncture. Malignant growths in the lung or mediastinum may simulate fibrosis. The latter is favored by long duration, compensatory enlargement of the opposite lung, frothy, mucopurulent or fetid (if there is bronchiectasis) expectora- tion and considerable cardiac displacement. Pressure signs, dullness extending across the median line, persistent pain in the chest and red-colored, gelatinous expectoration are indicative of malignant growths. Treatment.—In the localized fibrosis resulting from pleurisy, lobular pneumonia, bronchiectasis, etc., deep breathing, pulmonary calisthenics, general hygiene, tonics and perhaps climatic treatment, are the means available. In diffuse fibrosis we must employ iron, strychnia, cod-liver oil and all the measures indicated in chronic lung disease whether the case is tubercular or not. In very chronic cases strychnine is valuable as a stimulant to the right ven- tricle which sooner or later will fail to keep up the lesser circulation. Climatic treatment is very important in these cases as they run the risk of repeated attacks of bronchitis as wrell as the more serious danger of tubercular infection in non- tubercular cases if they remain in moist,changeable climates. Warm, dry air with sunshine, is what they need. The alti- tude should not be too high,—not over twelve or fifteen hundred feet if the fibrosis is at all extensive. The selec- tion of a proper climate may be difficult and must rest with the patient as the physician can only give general directions suitable to the individual case. In a recent case of fibrosis of the lower part of the right lung secondary to pleurisy, the patient, a physician, had tried many localities without finding one which seemed adapted to his case. He required 2 56 PULMONARY FIBROSIS. warmth, dryness and a moderate altitude. These conditions can only be obtained by varying the place of residence at different seasons. In syphilitic cases the iodides and mercury should be given. In advanced cases it may be well to omit the mer- cury and give iron, strychnia and cod-liver oil with the iodide of potassium. Tubercular fibrosis in a syphilitic sub- ject should be treated mainly as a case of tuberculosis, con- tinued mercurial courses being inadmissible. Syrup of the iodide of iron is a useful remedy in these cases. In cases of fibrosis of the lung associated with well de- veloped bronchiectasis accompanied by offensive expectora- tion the treatment should be such as has been advised for bronchial dilatation—intratracheal injections of guaiacol, creosote vapor baths, etc. Surgical interference, for the drainage of bronchiectatic cavities resulting from fibrosis, is of doubtful utility especially in syphilitic cases. In tuber- cular fibrosis the treatment is that of chronic tuberjular dis- ease of the lung and is considered under that subject. CHAPTER XII PULMONARY ABSCESS. Pulmonary abscess is a more or less circumscribed col- lection of pus within the lung. The term abscess of the lung is frequently applied to collections of pus within the chest which have little pathological resemblance to ordi- nary abscess. These collections may be single or multiple. While pulmonary abscess is almost always the result of some other disease of the lung, we are justified in considering it a distinct clinical affection because of its individual features. Etiology.—Single abscess of the lung occurs in con- nection with pneumonia, from softening and necrosis of an area of consolidated lung tissue and is favored by constitu- tional vices and alcoholism; also, from injuries, as fractures of the ribs, or'penetrating wounds of the lung. Multiple abscesses of the lungs are usually pyaemic in nature and oc- cur from the softening of infarctions of the lung, from septic embolism of the lung and from septic broncho-pneumonia. Pulmonary abscess may occur in tuberculosis of the lung, from the rapid breaking down of a large caseous area; in bronchiectasis with destruction of the bronchial walls and contiguous structures, or possibly without such changes; in connection with non-tubercular cavities resulting from local destruction of blood supply; from suppuration of an hydatid cyst of the lungs; from extension to the lung of suppurative inflammation of the pleura, bronchial glands, mediastinum, sub diaphragmatic space, liver, and, in rare instances, of the spleen and pancreas. Malignant disease of the oesophagus may cause abscess of the lung tissue. Circumscribed gan- grene may end in abscess. The most frequent cases of abscess of the lung are those secondary to pneumonia, pyaemic infection of the lung, and to empyema. Morbid anatomy.—Tie m^.-bid anatomical conditions 25h pulmonary abscess. with which abscess may be associated are very varied, but these conditions do not belong to pulmonary abscess. Abscess following pneumonia occurs most often in the middle or upper lung. Multiple pyaemic abscesses occur in any portion of the lungs but may be confined to the base or lower portions. They are of small size, from that of a split pea to that of a chestnut, and, when at the surface of the lung, are covered by small areas of pleural inflammation. These embolic abscesses are surrounded by a zone of hyper- aemia and are apt to be near the surface of the lung with their bases just beneath the visceral pleura. In cirsumscribed gangrene the necrosed tissue may be expelled through a bronchus and granulation tissue may form in the walls of the cavity and generate pus. These cavities may close by granulation and cicatrization. The expectorated matter from a pulmonary abscess con- sists of pus of a yellow or yellowish-green color containing elastic fibers and particles of lung tissue. There is,usually, little or no odor at first. Many kinds of organisms are pres- ent, the most frequent being pneumococci and streptococci. The discharge from an encysted empyema, suppurating bronchial gland, etc., which breaks into a bronchus, will not contain elastic fibers except at the immediate time of rupture Clinical history.—The clinical history of pulmonary abscess is necessarily varied. The principal symptoms— pain, cough, dyspnoea and fever—are common to various' disorders with which abscess may be associated or of which it may be the result, and the latter may be well advanced before it is possible to individualize any of these symptoms as indicative of abscess of the lung. Multiple embolic abscesses of the lung may give no his- tory apart from that of a pyaemic state, with, possibly, a small amount of fetid expectoration. The occurrence of embolic abscess may be marked by sudden, sharp pain in the chest. The history of sudden and profuse expectoration of pus, with or without pain, may be the first reliable indication of an abscess of the lung. When abscess of the lung occurs from pneumonia the pulmonary abscess. 259 fever maintains, or returns to, a high degree and subse- quently shows a fluctuation indicative of sepsis and is ac- companied by sweating and, perhaps, rigors. Dyspnoea may be troublesome but exhibits no features specially indic- ative of abscess, and the same may be said of the cough and pain. The course of pulmonary abscess depends on the nature of its cause. It may be prolonged; death may occur from sepsis or from septic lobular pneumonia due to infection by material from the abscess cavity. Single abscesses follow- ing pneumonia may heal by cicatrization after the discharge of the contents of the cavity. This termination, while rare, I have known to occur in more than one instance, as in the following case: Boy aged 18 years. Previous health good. Had a moderately severe attack of pneumonia of the right lung. After the crisis the temperature rose to 102.5° F. and showed a daily fluctuation from 99° F. to 102.5° F. with daily sweating. Examination, six days after the crisis, showed an area in the right mammary region which exhibited dullness, sup- pressed respiratory sounds, increased fremitus, and rales surrounding this area. There was considerable pain in the right side of the chest. Four days later a considerable quantity of pus was expectorated which contained some elastic fibers. The patient was very weak and exhausted and continued to expectorate quantities of pus daily which became offensive. The odor was controlled by inhalations of an oil solution of menthol, aristol and eucalyptus. The temperature ranged from 99° F. to 101° F. The pain gradu- ally disappeared. Pectoriloquy and amphoric voice and breathing were obtained over the area where signs of con- solidation had been present. The patient gradually improved under tonic treatment and nutritious diet, and three months later was, apparently, well; the cough and expectoration having ceased. At this time the signs of a cavity could not be obtained, there being simply increased fremitus, partial dullness and breathing of a high-pitch and of tubular quality over the area involved. Symptoms and diagnosis.—Pain in the chest, cough, fever, dyspnoea and the expectoration of a quantity of pus containing elastic fibers are the symptoms of abscess of the 260 PULMONARY ABSCESS. lung, in most instances these symptoms are character- ized by their indefiniteness. Sudden pain in the chest fol- lowed by cough, dyspnoea and septic temperature indicates embolic abscess, especially in connection with septic condi- tions in which emboli are liable to occur. Continued py- rexia after pneumonia, especially if of a sep+ic type, cough and rapid respiration are suggestive of abscess. The physical signs are not always conclusive but when taken in connection with the subjective symptoms a diag- nosis can usually be reached. Before discharge of the contents of the cavity has oc curred there will be localized dullness, diminished breath sounds, and, perhaps, increased fremitus. If there are sev- eral areas of softening there will be crackling rales around these areas. At this stage the absence of displacement of the apex beat of the heart, and the presence of fremitus are important in the exclusion of pleural effusion. When a cavity has formed there may be a tympanitic quality to the percussion note if the cavity is near the sur- face of the lung, or the note may be high-pitched and me- tallic in quality. Perhaps cracked-pot resonance may be obtained. If the cavity has free communication with a bron- chus the percussion note may be higher with the patient's mouth open than with it closed (Wintrich's change of pitch), or, if the cavity be of greater diameter in one direction than another and contain fluid, the percussion pitch will vary in the upright and recumbent positions(Gerhardt's change in pitch). Again, the rise in percussion pitch with the mouth open may b? obtained only when the patient is recumbent (Win- trich's interrupted change in pitch). The voice sounds may be amphoric in quality and pector- iloquy may be obtained. Careful study of the loud and whispered voice sounds -is of great value. The breathing may be cavernous in character and, perhaps, amphoric in quality. Gurgles and metallic tinkling may be heard. Bronchiectasis and circumscribed gangrene are the affections within the lung most likely to simulate abscess. In the former the sputum will not contain elastic fibers, and pyrexia may be absent, or, at least, not marked or of a sep- PULMONARY ABSCESS. 261 tic type. The history is different from that of abscess. In gangrene the course is more rapid, there is greater prostration and constitutional disturbance, the expectoration is fetid and extremely offensive and contains broken down lung tissue. In hydatid cysts of the lung the general symptoms are milder than those of abscess. The percussion note, in the center of the affected area,has a more absolute flatness.. The characteristic hooklets in the expectorated matter are decis- ive when obtained. Abscess of the liver, sub-phrenic abscess, mediastinal abscess, encysted empyema, etc., breaking into the lung, may usually be diagnosed through the history and physical signs present prior to the involvement of the lung. Pus, from these sources, discharged through the bronchi,will not contain fibers of pulmonary tissue except, perhaps, at the immediate time of rupture. Abscess and empyema are alike most frequent after pneumonia, and if the latter be encysted, as is likely in a pneumococcus infection, it may readily be mistaken for abscess, especially if it discharges into a bronchus. The constitutional disturbance attending abscess is more severe than with empyema, also, the fever, rigors, sweating, pain and cough are more severe. Empyema shows more change in the contour of the affected side and more limitation of motion. Loss of fremitus, less abrupt transition from flat- ness to partial resonance, greater interference with conduc- tion of voice and respiratory sounds also characterize em- pyema. When an empyema discharges through a bronchus the signs may resemble those of a cavity in the lung so closely as to make the distinction between them impossible by the physical signs alone. The following case illustrates this: Little girl aged 6 years. Had an indefinite illness last- ing three months with a history of irregular fever. At time of examination had a temperature range of from 99° F. to 102.5° F. There were signs of effusion in the left pleura. Drainage was advised but was delayed for some time. A small amount of pus was discharged through an opening be tween the fourth and fifth ribs. A few weeks after this th 262 PULMONARY ABSCESS. child br gan to spit up pus and the temperature range was from 1C0° F.to 105° F. 'There were now signs of a cavity under the center of the left scapula. The lower left lung was much retracted. The physical signs were identical with those of a cavity in the lung substance. Examination of the discharge showed at first pneumococci and streptococci; later a few tubercle bacilli. Treatment.—The medical treatment of abscess of the lung consists in nourishing food and the liberal use of such tonics as iron, quinine and strychnia; the employment of such antiseptic inhalations as have been recommended in bronchiectasis, if the cavity has emptied and the discharge is fetid. Pyaemic abscesses are usually beyond treatment, medical or surgical. In single abscess following pneumonia, if the discharge is free and septic symptoms not alarming, it is well to post- pone 'surgical interference in order to see if the cavity will not close by cicatrization. In deciding the advisability of operation the points to be considered are the general con- dition of the patient, the nature of the primary disease, the location of the cavity, whether it is multiple or single ab- scess, the possibility of free drainage and the condition of the pleural tissues. Cases of pulmonary collapse, circum- scribed gangrene and abscess resulting from septic accumu- lations in the bronchi from the pressure of tumors, aneu- risms, injuries to the throat, etc., are not surgical cases and these conditions should always be excluded. After having located the diseased area as nearly as pos- sible, the presence of pus must be determined by exploratory puncture. These punctures may be repeated several times if necessary to locate the cavity. It is not always easy to locate a cavity with the exploring needle, as the location is apt to be higher in the lung than the signs indicate. The exploration may be made without anaesthesia, though in many cases this is impossible. Chloroform is the best an- aesthetic for this purpose and the anaesthesia must not be profound. If pus is obtained the needle is left in place as a guide, and exsection of one or more ribs is proceeded with. As it is difficult to tell how much room is needed, it is well PULMONRY ABSCESS. 263 to make a vertical incision instead of the oblique one often used in operating for empyema. As it is often impossible to tell with certainty that pleural adhesions are present it is well to proceed, up to the point of incising the pleura, as if they were absent. Godlee recommends stitching the pleural surfaces together, including a space from one and a half to two inches in diam- eter, with six or eight stitches. The pleura is now incised and if air draws through into the pleural cavity, more stitches are introduced. This method has several ad- vantages over a primary operation for producing pleural ad- hesions. If the abscess is near the surface of the lung a pair of sharp pointed forceps are introduced along side of the needle, the latter is withdrawn and the opening enlarged with the finger. Even in deep-seated abscesses it is proba- ble that this method of entering the lung is preferable to the use of the actual cautery. Haemorrhage may be controlled by plugging. The drainage tube should be fixed to the chest wall with plaster, as it is more likely to become dis- placed than in empyema. The wound of the soft tissues should be treated with chloride of zinc (40 grains to the ounce) and packed, around the tube, with gauze wet in the same solution and covered with iodoform (Godlee). Irrigation of the cavity should not be practiced. Anti- septic powders may be introduced, but they do little good. A few layers of gauze covered by oakum or wood wool is a convenient dressing when the discharge is abundant and offensive. Frequent change of dressings is necessary. The tube should be removed frequently and cleaned. It should not. however, be removed for the first two days or it may be difficult to reintroduce it. The tube should remain until ex- pectoration has ceased and the discharge through the wound has diminished to a teaspoonful or so daily. PULMONARY GANGRENE. Gangrene of the lungs is a condition of necrosis and de- composition of lung tissue. It is almost always secondary to inflammatory conditions of the lung. Laennec's divisiou of circumscribed, and diffuse gangrene, is still adopted as 264 PULMONARY GANGRENE most convenient, though in the so-called circumscribed va riety its peripheral limitations cannot always be defined. Pulmonary gangrene is not frequent, as the post-mortem statistics of various hospitals show its presence in from only one-half to three-fourths of one per cent, of the cases of pulmonary disease. ^Etiology.—The microorganisms which induce gan- grene may reach the lungs through the bronchi, blood ves sels, or by extension from some adjacent organ. Various organisms are found in the necrotic lung tissue. The staphylococcus pyogenes aureus is supposed to be the pri- mary cause of the necrosis (Bonome). Special microbes have been described, and such organisms as leptothrix, aspergilli, sarcinae, etc., are frequently found. It is likely that several saprophytic organisms may be involved in the production of gangrene. Gangrene of the lungs occurs in connection with pneu- monia, and while rare its occurrence is favored by lack of nutrition, alcoholism, diabetes, nephritis and senility. In- fluenza pneumonia may be followed by gangrene. The in- fluence of mixed infections in pneumonia upon the occur- rence of gangrene is not fully understood. Lobular pneu- monia, secondary to the infectious diseases, may rarely terminate in multiple foci of gangrene. Pulmonary gangrene may supervene upon septic in- flammation occurring in connection with chronic pneumonia. Bronchiectasis may cause gangrene by the retention of sep- tic products in the bronchi, or through the occurrence of septic lobular pneumonia of adjacent lung tissue or even of the opposite lung through inhalation of septic material. Loss of sensibility or paralysis of the larynx allowing of the passage of food, secretions, etc., into the bronchi may, particularly in the insane, be a factor in producing gangrene of the lungs. Regurgitated matter from the stomach may also be drawn into the lungs. Gangrene of the lungs may occur secondary to cancrum oris, epithelioma of the mouth, tongue or oesophagus, diphtheria, etc. Sup- purating bronchial glands may, by establishing communi- on tcfn between the oesophagus and bronchi, cause gangrene. PULMONARY GANGRENE, 265 Tumors or aneurisms in the mediastinum or lungs may cause gangrene by obstructing the bronchi and causing dila- tation of the tubes, retention of secretions and septic pneu- monia and gangrene. Pressure of tumors upon the vessels or nerves of the lungs has been considered a cause of gan- grene. Pulmonary tuberculosis rarely results in gangrene. Septic emboli in the lung may cause gangrene. They may occur from thrombosis of the lateral sinus, thrombi in the uterine veins in puerperal fever, or from the veins surrounding foci of suppuration. Typhoid fever, ery- sipelas and many other conditions may cause embolic gan- grene of the lungs. Abscess of the liver, fecal abscess, sub-diaphragmatic abscess, cancer or gangrene of the oesophagus may cause gangrene of the lungs by extension. Wounds and injuries of the lungs with extensive extravasation of blood may be followed by gangrene with or without pneumonia. Poison- ing by foul air may result in gangrene of the lungs. Morbid anatomy.—If the gangrenous area is near the surface of the lung the pleura will be inflamed and covered with lymph. The gangrenous area may be small or may in- volve the greater part of a lobe. Embolic gangrene maybe wedge-shaped. In circumscribed gangrene the necrotic area is sur- rounded by a zone of inflammation by which nature at- tempts to limit the extension of the process. The gan- grenous area may be black, gray or greenish and the ne- crotic tissue may have been partially expectorated. The contents of the cavity will be fetid, of a pulpy or semi liquid consistence, and may consist largely of blood. The walls of the cavity may be ragged, or may consist of granulation tis- sue. Well developed induration may surround the cavity in cases which have lasted some time. The bronchi and ves- sels of the affected area may remain as shreds in the necrosed mass, or may have been destroyed. The neighboring bronchi are inflamed and contain fetid material. In circumscribed gangrene there may be one or more foci. The lower lobe is more often affected than the upper lobe, and the peripheral portion of the lung is more involved than 266 PULMONARY GANGRENE. the centre. The lung tissue surrounding the gangrenous area is congested or consolidated, and surrounding this is an area of well marked oedema. When the gangrenous area extends rapidly, severe haemorrhage may occur from rupture of vessels. Perfora- tion of the pleura may uccur. Abscess of the brain is some- times associated with circumscribed gangrene of the lungs. The bronchitis which accompanies gangrene and which re- sults from the irritation of decomposing material in the bronchi may be very severe. Diffuse gangrene has no limiting zone of inflammation. The affected area usually has a fetid odor, is gray or black in color, of a doughy or pulpy consistence, or may be a semi- fluid mass in a ragged cavity. The pleura may be necrotic and empyema or pyopneumothorax may be present. Diffuse gangrene, while rare, is sometimes met with in connection with pneumonia, and rarely after obliteration of a large pulmonary artery though the infection resulting from this cause does not often sphacelate. The larger por- tion of a lobe may be involved. Clinical history.—There may be no history indica- tive of gangrene of the lungs. In the insane or in diabetic subjects and in embolic gangrene even the odor of the sputum and breath may be absent. The very great variety of aetiological factors for gan- grene of the lungs lead us to expect a marked want of uni- formity in its clinical history. There may be a history of chills with irregular fever and great prostration. Pain may be present if the pleura is involved. Haemoptysis may be an early symptom and may rarely be profuse and fatal. Dyspnoea may be severe in cases showing great prostration. Cough may or may not be troublesome. Fetid breath usually precedes expectoration. The expectoration is yel- low, brown or black; purulent or bloody; alkaline at first, but later acid. It forms three layers on standing: an upper of grayish froth; a middle, watery and clear; and a lower layer containing shreds of lung tissue and, possibly, elastic fibers. In rare instances large fragments of lung tissue may be PULMONARY GANGRENE. 267 coughed up. According to Osier elastic tissue is almost in- variably present in the sputum. The fetor of the sputum is more marked than in fetid bronchitis or pulmonary abscess. It is particularly offensive when there is free communica- tion between gangrenous cavities and the bronchi. When gangrene follows pneumonia there may be early prostration, small, feeble, irregular pulse, septic fever and fetid expectoration. In some cases of gangrene after pneu- monia, with great prostration, cough and expectoration may be absent. Symptoms and diagnosis.—Fever, cough, pain, dys- pnoea, great prostration, fetid breath with expectoration presenting the characteristics of gangrenous sputum are the chief symptoms of gangrene of the lungs. The physi- cal signs are often more inconclusive than the general symptoms. Signs of consolidation followed by evidence of the for- mation of a cavity, especially after pneumonia, and with the characteristic sputum and breath will enable us to diagnose circumscribed gangrene. In children there maybe only the signs of broncho-pneumonia. In diffuse gangrene there will be evidence of more or less complete consolidation of the lung. The voice and re- spiratory signs of consolidation are modified or wanting as the bronchi of the affected area are more or less occluded. The diagnosis rests mainly on the history, prostration, fever and characteristic sputum and breath. The sputum should be examined microscopically for lung tissue, Bronchiectasis, putrid bronchitis, pulmonary abscess with fetor, rupture of an empyema into the lung, and local necrosis of a phthisical cavity may resemble pulmonary gangrene. In all lung cavities, other than gangrenous, presenting fetor, the appearance of the fetor is subsequent to the signs of a cavity, while in gangrene the fetid expec- toration precedes the signs of a cavity. In empyema there will be a history of pleurisy prior to the expectoration of a quantity of pus, possibly fetid; but gangrenous odor will usually be wanting and lung tissue will be absent from the expectoration unless at the immediate time of rupture. -,)M PULMONARY GANGRENE- Treatment.—The treatment of pulmonary gangrene is chiefly supporting, with absolute rest in bed. If there is much pain or cough small doses of morphia may be given, but care should be taken not to depress the patient. Quinine, strychnia, whisky and milk with concentrated, nourishing food are the chief necessities. Disinfection of the air passages may be accomplished by the methods recom- mended for bronchiectasis. If the creasote bath cannot be tolerated, inhalations of vapor of carbolic acid (f per cent.) may be used. Carbolic acid is also recommended for inter- nal use in doses of from four to twelve grains daily. An in- haler may be used for vaporizing the air passages, satura- ting the sponge with a solution of creasote, menthol, aristol, eucalyptus, etc., using from ten to fifteen per cent, of any combination desired. The subcutaneous injection of guaiacol in sterilized oil, in daily doses of fifteen grains or more, is highly recom- mended by Weil. Several observers have reported good re- sults from these injections. Injections of antiseptic sub- stances directly into the affected area of lung has been ad- vised but is of doubtful utility. Traube advises the internal administration of the acetate of lead; recoveries have been reported under this treatment. When gangrenous- cavities are circumscribed and acces- sible, drainage is to be considered. CHAPTER XIII PULMONARY TUBERCULOSIS. Pulmonary tuberculosis (consumption, phthisis) is an in- fectious disease of the lungs caused by the bacillus tu- berculosis. It is the most widespread and prevalent disease affecting the human family. Existing from the earliest times and recognized by Hippocrates it has continued its ravages through centuries and still maintains its position as the most fatal malady of mankind. One-seventh of all deaths from disease are said to be due to some form of tuberculosis. The U. S. Census Report for 1*90 gives 102,1** deaths from consumption. Vaughn esti- mates, from the Census Report, that one person out of every sixty of the population is affected with tuberculosis. Statistical evidence is in favor of the decrease of tuber- culosis, and some local statistics show marked diminution of the disease. According to Russell there was a decrease of 44 per cent.in the death-rate from tuberculosis in the city of Glasgow from 1H60 to 1H94. In Massachusetts there is re- ported a decline of 20.2 per cent, per 10,000 in the death-rate from pulmonary tuberculosis between lK"Jo and 1*95. Biggs, commenting on the prevention of tuberculosis by the New York Department of Health, says, "The death-rate in NewT York from tuberculosis shows an almost regular and rather rapid decrease from year to year". Pollock says, "We have witnessed the immense decrease of deaths from phthisis and a decided lengthening of its duration. Fewer die of it, and are slow to die when affected.*'. The modern conception of the nature of tuberculosis, the result of the discoveries of Koch, is a striking endorsement of the doctrines of Laennec who maintained the unity o tuberculous processes; also of Villemin who in 1*65 demon- strated the infective nature of tuberculosis by inoculation experiments. 270 PULMONARY TUBERCULOSIS. ^Etiology.—We will not consider here the morpho- logical characteristics of the tubercle bacillus nor the con- ditions governing its culture and existence. In the vast ma- jority of instances its presence in the lungs is the result of post natal infection. This infection occurs through the air passages or through the blood vessels, and, in rare instances. by extension from the bronchial lymphatics. Infection may occur in several ways. Hereditary transmission. The possibility of inherited tu- berculosis has long been a matter of dispute between those who believe in its direct inheritance (Cohnheim,Baumgarten) and those who believe only in the inheritance of constitu- tional predisposing factors. Sims Woodhead says. "From the public health point of view the tubercle bacillus must be looked upon as the fons et origo mali, and all statistics that have recently been collected go to prove that the tubercle bacillus does its work,as a rule, in the post natal period. Al- though there may be a few eases of congenital tuberculosis, all statistics point to the fact that tuberculosis is contracted after birth". According to Ransome heredity may act through direct, active infection before birth; through hered- itary transmission of latent germs: and through the trans- mission of a susceptible constitution, but heredity has much less to do with consumption than is popularly supposed. Direct transmission must occur through the sperm, the ovum or through the blood by the medium of the placenta. Al- though bacilli have been found in the semen (Jani, AVeigert) experimental results (Gartner) and clinical evidence are a- gainst this method of transmission. Osier considers the fact that the bacillus will not attack the nuclear material of which the spermatozoon is made as good negative evidence on this line. Baumgarten has detected bacilli in the ovary of the rabbit artificially fecundated with tuberculous semen. The possibility of infection by the ovum cannot be denied in view of the above experimental facts. The most frequent method of congenital transmission is through the blood current by way of the placenta. This was suggested by Cohnheim and developed by Baumgarten, who believes the bacillus is introduced through the placenta PULMONARY TUBERCULOSIS. 271 and umbilical vein ("placental infection"), or by the vum it- self (' 'germinative or congenital infection"). Buggs has found bacilli in the uterine wTallatthe site of the placental insertion, in the blood of the umbilical vein, and in the vessels of the infant's liver. Against Virchow's objection that the bacilli, in germinative infection, would interfere with the develop- ment of the ovum, Baumgarten brings his theory of the latency of tuberculosis. While the possibility of the latency of tuberculosis is borne out by the experiments of Mafucci with avian tuberculosis, the acceptance of Baumgarten's ap- plication of his theory in explanation of atavism in tuber- culosis is hardly to bo expected. Both clinical evidence- -as shown by the presence of tuber- culosisin27.8 per cent, in 2,576 autopsies on children who died who died during the first year of life (Botz), and by the fre- quent occurrence of localized tuberculosis in children, and experimental results are in favor of the occurrence of con- genital tuberculosis. On the other hand, inoculations made from the tissues of foetuses from tuberculous mothers are usually negative, and the percentage of cases of congenital tuberculosis is very small. Ogle's statistics show that be- tween the second and tenth years of life there is a great de- cline in the mortality from tuberculosis, and that between the tenth and twentieth years of life the liability of females to tuberculosis is fifty per cent, greater than males. These facts do not conform with Baumgarten's theory of latent tuberculosis. These matters refer particularly to the gen- eral infection of tuberculosis and we will not pursue them further. The manifestations of parental heredity have been va- riously estimated at from ten to sixty-six per cent. The fre- quency of its manifestation is the principal source of the gen- eral belief in the heredity of tuberculosis. The belief that fathers transmit the disease most often to sons, and, per contra, mothers to daughters, is not borne out by statistics. It is generally stated that females are the subjects of hereditary tuberculosis more often than males, and that heredity is most often from the maternal side. Infection by inhalation. The inhalation of dust contain- 272 PULMONARY TUBERCULOSIS. ing bacilli is probably the most frequent method of infection. Fltigge thinks that infection is not produced by dried spu- tum or dust containing bacilli, but by finely divided particles of sputum floating in the atmosphere. The greater frequency of tuberculosis in towns and cities and in the most condensed districts of these places indicate the greater facilities for infection which attend the massing of many individuals within restricted limits. Bacilli have been found in the dust of street-cars and various public places. Nutall estimates that a patient with moderately advanced tuberculosis expectorates from one and a half to four billions of bacilli in twenty-four hours. If this be any where near the truth the effect of the free exercise of the great American prerogative of frequent and indiscriminate expectoration can be readily surmised. Cornet's inoculation experiments with dust from hospital wards, asylums, prisons etc., show a degree of infectiousness more or less proportionate to the constancy of occupancy by tuberculous cases, and of inverse relation to the degree of cleanliness etc. Medical wards were six times as infective as surgical wards. Again, bacilli were not found in dust from two wards occupied by tuberculous cases. Pollock, judging from the results in the Brompton Hospital for Consumptives, does not favor the idea that hos- pital infection is frequent.* The fact that the vast majority of cases of tuberculosis are of the respiratory system; the great prevalence of the disease in institutions where inmates are confined to close quarters and a limited amount of fresh air; and the direct re- lation between the incidence of the disease and the degree of intimacy of association with tuberculous subjects or infect- ed dwellings or places, all emphasize the possibilities of in- fection by inhalation. Infection by inoculation. The experiments of Villemin, Cohnheim, and Salmonson have proved the possibility of this mode of infection. Inoculation may occur through the skin by washing soiled linen, scratches from a broken spit- *Hance found the dust from various public places infective. Joccond Dumont pallier think contagion in hospitals unlikely, Pean thinks it likely. Terrier, Dehove think hospital contagion extremely likely to occur, PULMONARY TUBERCULOSIS. 273 toon, infected earrings, infected hypodermic syringe, in mak- ing post mortem examinations on tuberculous subjects, and in performing circumcision. Baumgarten says that inocu- lation of the superficial layers of the skin is impossible, sub- cutaneous inoculation being necessary to insure infection. Inoculation by the alimentary canal may occur through kiss- ing consumptives, by the use of infected tableware, and by contact with coughed up particles of sputum. Direct inocu- lation through the generative passages, while possible, must be extremely rare. Gerlach, Ballinger and others have shown the infective quality of milk from tuberculous cattle. [Hay found bacilli in 51 out of 351 separate samples of cows' milk, and in 4 out of 204 mixed samples.] Ernst has shown that milk may be infective even in the absence of tuberculous mammitis in the animal from which it is obtained. Accord- ing to Bang butter made from the milk of tuberculous cows may be infective. Osier thinks the frequency of mesenteric tuberculosis in children may be explained by the infective qualities of milk. Experiments show the possibility of infection in animals by the use of the flesh of tuberculous subjects. This mode of infection is extremely rare in human tuberculosis but presents possibilities which should be guarded against. The Royal Commission upon Tuberculosis states, "We must believe that any person who takes tuberculous matter into his body in curs some risk of acquiring tuberculous disease." Inoculation, on the whole, plays an unimportant part in the mode of infection of human tuberculosis. Predisposing causes to infection. The geographical dis tribution of pulmonary tuberculosis shows that while prac- tically absent in certain arctic regions, deserts, and at great altitudes, yet in no habitable part of the earth does there exist complete immunity. Climate. The climatic conditions favoring infection are moisture and heat. The bad effect of wet sub-soil was shown by Bowditch in 1862, who said "A residence on or near damp soil is one of the primal causes of consumption in Massachu. setts". Buchanan's investigations corroborate this view in regard to the effect of wetness of soil. While hot climates 274 PULMONARY TUBERCULOSIS. seem to favor an active course for tuberculosis, we may ac cept Hirsch's statement that "The mean level of the temper- ature has no significance for the frequency or variety of phthisis in any locality". Low altitudes, moisture, rapid and extensive changes in temperature, and cloudiness are the climatic features which favor pulmonary tuberculosis. Race. No race is exempt. Aboriginal people develop susceptibility when removed from their usual conditions of existence. Thus the Negro in Africa is not as susceptible as in America though this race exhibits unusual susceptibil- ty under all conditions. Susceptibility in the American Indian has increased since the conditions governing his early history have changed. Statistics show that a relative immunity exists among the Jews. Sex. Apart from difference at certain ages there is practically no variation between the sexes as to liability to infection, the mean annual mortality for a period of thirty years being 2*1.4 for males, and 2428 for females (Kidd). Ogle's statistics show that for the first fewT years of life the mortality for the twTo sexes is alike; between five and thirty- five the female mortality greatly exceeds the male; after this period the male mortality exceeds the female. This applies to pulmonary tuberculosis and not to general tuber- culosis. The influence of pregnancy on infection has been much discussed. Pollock states that the periods of puberty, of gestation, of parturition and lactation are dangerous to individuals predisposed to tuberculosis. This is true with possibly the exception of pregnancy in certain individuals in whom the latter state stimulates nutrition to an extent which antagonizes all pulmonary diseases. Age. No age is exempt. Hippocrates states the recog- nized fact that pulmonary tuberculosis is most frequent from the eighteenth to the thirty-fifth year. [18*1__1890 of 397,559 total deaths, 118,59* were from consumption, at ages between 25 and 35 years.— Ransome.] Landousy has demon- strated the tuberculous nature of several cases of broncho- pneumonia in children under two years of age. Occupation and environment. Occupations involving the breathing of impure, overheated, or dusty air predispose PULMONARY TUBERCULOSIS. 275 to infection. Sedentary or indoor work, bad ventilation and drainage, the overcrowding of employees in close quarters etc., are factors of environment. Flick's investigations in Philadelphia, and Ransome's in Manchester, England, have demonstrated that infection clings to certain dwellings once they have become infected by tuberculous residents. Individual predisposition. The modern understanding of the infectious nature of tuberculosis has tended to modi- fy the ancient theory of predisposition—a theory dating from the time of Hippocrates and Galen and postulated on presence of a special predisposition to tuberculosis. It is argued by many that individual predisposition consists merely in an inherited general constitutional liability to all depressing influences, i. e., the predisposing factors of tu- berculosis. This argument does not materially affect the position of those who hold to the doctrine of predisposition. Statistics undoubtedly show family tendency to tuber- culosis, and, moreover, show that the mother's influence is greater than the father's as regards both sexes; and that the disease appears at an earlier age when there is family tendency, particularly in females. Could Baumgarten's theory of latent tuberculosis be established in all its phases the matter of predisposition would assume a new position. General and local diseases. Measles, whooping-cough, influenza, variola, diabetes, insanity, syphilis, and, in some degree, all depressing diseases predispose to tuberculosis. Bronchitis, pneumonia (rarely), pleurisy, chronic heart dis- ease particularly stenosis of the pulmonic valves, are pre- disposing factors to tuberculosis of the lungs. The opinion that a large proportion of pleurisies are tuberculous is supported by post-mortem evidence and by the subsequent history of these cases. Rokitansky taught an antagonism between tuberculosis of the lungs and physi- cal changes in the heart resulting in obstruction to the pulmonary circulation. This has been denied by many, but is supported by several observers of great clinical experi- ence. Louis believed in the antagonism between mitral disease and tuberculosis, and J. E. Graham states that mi- tral stenosis antagonizes tuberculosis of the lungs. Ott 276 PULMONARY TUBERCULOSIS. believes that left-sided disease of the heart is antagonistic to pulmonary tuberculosis. The fact that mitral disease is ■ occasionally associated with tuberculosis of the lung does not invalidate these views. My own experience is decided- ly in accord with these observers as I have never seen tuber- culosis of the lung develop in a person the subject of disease of the left side of the heart wluch particularly affected the pulmonary circulation. The following case is of interest in this connection: Woman aged 24. Married. A few weeks after child- birth she developed an acute, lobular, tubercular pneumonia of the right lung. After three weeks of severe illness there were two weeks of improvement when another attack of pneumonia developed, followed by signs of a cavity in the right lung. Shortly afterward she developed an acute rheumatism with signs of an acute endocarditis with mitral localization. After the appearance of the mitral lesion (regurgitant) there was much improvement in the lung symptoms and the patient was soon up and about, and after several months adopted a change of climate. While re- covery was impossible in this case the advancement of the disease was undoubtedly checked by the occurrence of the mitral lesion. It is claimed that traumatism is a factor in producing tuberculosis. Surgeons, generally, recognize the effect of traumatism in disseminating local tuberculosis. Mendels- sohn has recorded cases where contusions of the chest have been followed by pulmonary tuberculosis. Morbid anatomy.—Histologically a tuberculous nodule is a non-vascular structure consisting of a central substance made up of one or more multinucleated giant cells, or of a granular substance surrounded by giant cells. These cells may be connected by a network of anastomotic processes; outside of the central structure there is usually found large epithelioid cells with large nuclei and granular protoplasm. These cells lie in the network formed by the processes from the giant cells; surrounding these structures is a more or less indefinite zone of lymphoid cells contained in a homo- geneous, or fibrillated reticulum which is best marked in slowly developed lesions. The changes which occur in a tuberculous nodule are PULMONARY TUBERCULOSIS. 277 caseation and fibrosis. Whether the change assumes one form or the other depends on the mode and extent of the infection, and on the resisting power of the individual. This defensive action of the body against the action of the bacilli is supposed to depend in part on phagocytosis (Met- schnikoff), and partly on an antitoxic action of the serum and blood plasma which is derived from the leucocytes either by a process of excretion or by their destruction. In caseation the cells in the center of the nodule become swollen, fused, and lose their structure (coagulation necro- sis.—Cohnheim) becoming opaque and homogeneous (gray tubercle); fatty degeneration occurs and the nodule becomes cheesy and of soft consistence and yellow color (yellow tubercle), particularly in large and diffused lesions. Ca- seous lesions may soften and form a cavity or they may be- come calcified by the deposit of lime salts and be expector- ated or encapsulated. Fibrosis occurs when coagulation necrosis is limited and the zone of lymphoid tissue is transformed into dense con- tracting tissue. This change postulates resisting power of the tissues and is Nature's method of limiting the lesion. It occurs in infections of limited severity and extent especially when occurring through the vessels. The type of the lesion in the lung will depend on the mode of infection. If this is through the vessels, coming from a caseous focus in some other organ or tissue (Buhl) or in the lung itself or as part of a general tuberculosis, there results a more or less extensive eruption of disseminated miliary nodules from embolic arrest in the alveolar walls. These nodules are most numerous at or near the apex of the lung. The lung tissue between the nodules may be normal, congested or cedematous, or may present areas of consolida- tion. In some cases there is a tendency to necrosis and softening of the nodules if the case is not too rapidly fatal; in others there is a tendency to fibroid induration of the al- veolar walls and surrounding tissues. Fusion of the nod- ules, in the earlier stages before the softening of "yellow" tubercle appears may give the tissue a gray, gelatinous ap- pearance (Laennec's gray infiltration). 278 PULMONARY TUBERCULOSIS. If the infection occurs through the air passages lodg- ment is found in the terminal bronchioles or the alveoli, and there results peri-bronchitis and broncho-pneumonia. The structural changes are, chiefly: epithelial accumulation within the alveoli; fibrinous exudation and leucocytes in the alveoli; cellular infiltration and thickening of the alveolar walls and terminal bronchi; increase in the interlobular con- nective tissue. These changes are variously associated and the preponderance of one or the other will depend on the type and stage of the lesion. The alveolar accumulation of epithelial cells is similar to that of ordinary lobular pneu- monia and is a characteristic lesion of the majority of cases of acute tuberculosis of the lungs, and of the acute phases of the so-called fibro-caseous variety. Fibrinous exudation and leucocytes within the alveoli are found in some of the most acute forms of the disease— the lobar type of pneumonic tuberculosis. The consolida- tion resembles that of croupous pneumonia but there is more or less epithelial proliferation. These intra-alveolar changes give the tissue a reddish or grayish-yellowT color. It is friable and soft with a more or less lobulated periphery. the breaking down of the tissue may form cavities of vari- ous sizes with the soft, irregular walls. Infiltration and thickening of the alveolar walls and bronchioles is a constant and characteristic lesion of all cases of pulmonary tuberculosis. It replaces and gradually obliterates both the alveoli and the pulmonary capillaries, which latter effect is probably largely responsible for the tendency to retrograde metamorphosis exhibited by fibro- caseous tuberculosis of which this lesion is particularly characteristic. Increase in the interlobular connective tissue is a fea- ture of the chronic forms of tuberculosis. There is a great- er tendency to fibroid development than in the inter-alveolar tissue, less tendency to degeneration, and blood supply is generally maintained. Extensive induration of the lung may result from this process in chronic tuberculosis. Cavi- ties, when present, have dense, fibrous walls. More or less bronchial catarrh is associated with these PULMONARY TUBERCULOSIS. 279 changes. The bronchial wall is infiltrated with cells and ulceration may be present. The peri-bronchial tissue may show cell infiltration. Large cavities may be traversed by fibrous bands formed from bronchi, or arterial chords which are generally closed by thrombosis and obliterating changes before ulceration of the wall results in haemorrhage. Aneu- rism of the vessel may occur, however, before these changes take place, and be followed by fatal haemor- rhage. Bronchial stenosis, dilatation, ulceration; pulmonary emphysema, collapse, oedema, gangrene; pleural adhesions, thickening; miliary tuberculosis of the pleura or pericardium' pneumothorax, pyopneumothorax, and tubercular enlarge- ment of the bronchial glands in children (Loomis, Ballinger) are the principal associated chest lesions. Lesions of other organs are frequent. The lung lesions occur in endless variety and degrees. and we will not attempt to recount them. Miliary nodules are frequently found in the lung having been distributed by the circulation from a focus of inspiratory origin and pneu- monic nature. More frequently the secondary foci are due to transmission of infective material by aspiration aided by gravitation from one part of the lung to another. The characteristic apical invasion of tuberculosis which is common to all varieties of the disease is generally ex- plained on the ground of lessened functional activity. This localization is most commonly an inch or twTo belowr the im- mediate apex and nearer the posterior surface than the an- terior. A less common location is just below the outer third of the clavicle in the outer portion of the upper lobe. Fowler shows that tuberculous lesions of the lung progress, as a rule, by distinct routes and almost always from above down- ward. From the primary foci in the apex, extension is downward in the anterior portion of the lobe just within the margin. The middle lobe of the right lung is usually affect ed secondarily to the upper right lobe, and late in the dis ease. It frequently escapes altogether. The lower lobe of the lung previously affected becomes involved early, usually before necrosis of the upper lobe 280 PULMONARY TUBERCULOSIS. has occurred and before the opposite apex is affected. The site of the lesion in the lower lobe is a spot midway between the border of the scapula and the spinous processes of the vertebrae and opposite the fifth dorsal spine. Fowler con- siders the involvement of this area early in the disease as characteristic of the chronic varieties of tuberculosis and of immense clinical importance. Extension from this area is backward and along the line of the interlobular septum. Extension toward the base is usually by scattered areas. Basic lesions occurring in the absence of apical lesion are either non-tubercular, or the tubercle is secondary. Inva- sion of the opposite apex, to that primarily affected, may be early, but usually not till after the invasion of the lower lobe of the lung primarily affected. The lesion is symmetri- cal with that of the primary lesion, but occasionally may affect the upper lobe close to the septum and opposite the axillary region. Occasionally the lesion crosses from the upper lobe of one lung to the upper portion of the opposite lower lobe. Cavities result from necrosis and ulceration of a tuber- culous area, usually from the result of these processes upon the bronchi of the affected area which become dilated from retained secretion. The center of a caseous area may ulcer- ate and form a cavity without involving the bronchi. Three forms of cavities are found: The recent ulcerative cavity of acute cases, with soft necrotic walls without limiting membrane,—these cavities may rupture into the pleural cavity and cause pneumothorax: Cavities with well defined walls of limiting membrane which secretes pus and which gradually undergoes slow necrosis with increasing size of the cavity,—these cavities may be crossed by trabeculae of arterial and bronchial cords, and are found in the chronic varieties of tuberculosis: Stationary cavities, quite small, with smooth lining membrane surrounded by dense, fibrous tissuet—they may communicate with the bronchi {cicatrices fistuleuses. —Laennec). Clinical history.—No one infection of the human or- ganism exhibits such a varied clinical history and course as tuberculosis, and espcially so in regard to its pulmonary manifestations of which many classifications embodying PULMONARY TUBERCULOSIS. 281 much variety of nomenclature have been made. It is un- necessary to discuss these classifications. Basing our distinction partly on the mode of infection and partly on the gross character of the pathological changes, we recognize four more or less distinct types of pulmonary tuberculosis, i. e., miliary tuberculosis, fibroid tuberculosis, acute pneumonic tuberculosis, and chronic pneumonic tuberculosis. The frequent combination of these types of the disease gives pathological and clinical justification for the various classifications which have been alluded to, but for the sake of brevity and clearness the above division has advantages. Miliary tuberculosis of the lungs occurs as a feature of general tuberculosis, or an eruption of miliary tubercles may occur as a current or terminal event in other forms of pulmonary tuberculosis. A caseous focus may discharge into a branch of the pulmonary vein (Weigert). In some cases, as in those which follow measles, whooping-cough typhoid fever, etc., no source of infection can be discovered. Miliary tuberculosis is more common in children than in adults, and is rare after fifty, though it may occur at any age. The lungs are large, hyperasmic and full of discrete tubercles of recent formation about the size of a pin's head and gray in color or semitransparent. When miliary tubercu- losis is secondary to chronic lesion ofthe lung the tubercles are less clearly defined, are grouped together, show casea- tion, and are most plentiful in proximity to the original le- sion. The primary lesion may assume a broncho-pneumonic type. There is a history of sudden onset with general malaise, loss of appetite, headache and fever. Haemop- tysis may mark the onset or there may be marked bronchi- tis with muco-purulent or rusty sputum. Dyspnoea is se- vere and out of proportion to the physical signs. Cyanosis is a distinctive feature because of its severity. It is most marked in the lips and finger tips. The cheeks are flushed, cough troublesome, pulse rapid and feeble, and the respira- tion may be from forty to eighty per minute. The temper- ature ranges from 100Q to 103.5° F. and according to Fowler 282 PULMONARY TUBERCULOSIS. presents a continuous and an inverse type. In the former it rises gradually and continues high with slight morning re- missions; in the latter the maximum temperature is in the morning instead of the evening. A typhoid state may develop towards the end of the case. Acute miliary tuberculosis is generally fatal in from two to three weeks though it may last for three or four months. Fibroid tuberculosis is a chronic miliary tuberculosis oc- curring most often as a primary affection of the lungs in persons of good resisting power and without predisposition. In these persons a moderately severe or extensive infection through either the vessels or air passages may result in miliary tubercle with a tendency to fibroid transformation rather than caseation and softening. It occurs most often in men and in those wdiose dusty oc- cupations favor sclerosis of the lung tissue. Apical invasion is the rule as in other forms of tuberculosis though second- ary lesion may occur in any portion of the lung. The le- sions occur as isolated nodules which are indurated, pig- mented and feel like shot in the lung tissue; or are grouped as nodules or areas of induration. Fibroid miliary tubercu- losis of the lung may occur in connection with intestinal and mesenteric tuberculosis, and there is also, as a rule, miliary tuberculosis of the pleural and pericardial surfaces, as in the following case: Woman aged 57. Family history good, previous health fair. Sick several months with irregular diarrhoea. Had lost flesh rapidly. Temperature 99.5° F., pulse 100. Lungs showed general induration most marked in the apices. No bronchitis, cough or expectoration. The abdomen was fiat and irregular, deeply seated nodules could be felt. The diarrhoea could not be controlled for more than a day at a time. She became greatly emaciated and died three months after coming under observation. Post mortem examination showed intestinal and mesen- teric tuberculosis, miliary tuberculosis of the pleural and pericardial surfaces and general disseminated miliary tuber- culosis of both lungs with well-marked fibrosis. The history is one of gradual onset, with some cough PULMONARY TUBERCULOSIS. 283 and gradual loss of flesh and strength, extending over a period of several years, or, with a history of this kind last- ing for a year or two there may be entire absence of all subjective symptoms, the process having been arrested. Again, a portion of the lung—usually the apex—may be markedly changed, with no history of illness other than gradual loss of strength. More or less cough is present though it may be absent. Fever is usually slight (one-half to one degree). Quite fre- quently the course of the disease is apyrexial. Haemoptysis is common in the early stages, may be recurrent, is usually slight, may be profuse, but in either case is not connected with the occurrence of lobular inflammation as it is in the pneumonic type of the disease. Diarrhoea and night sweats are usually absent. In advanced cases with marked retrac- tion of the lung and thickened pleura the cough may be violent, paroxysmal, and tend to produce vomiting. Dys- pnoea and rapid pulse may be present in cases where em- physema has developed. Muco-purulent or fetid expectora- tion may be present and the cases may ultimately present the variouscli nical features of advanced sclerosis of the lungs This form of tuberculosis tends more than any other t( undergo arrest, or, at least, to run a prolonged course. It may last from ten to twenty years. Acute pneumonic tuberculosis (galloping consumption, phthisis florida, caseous tuberculosis) occurs in two forms: the disseminated lobular or bronco-pneumonic type, and the lobar or pneumonic type. The former occurs most often in children or young people, and in those with a predisposition to tuberculosis. These two types constitute only about two and one-half per cent, of the total cases of pulmonary tu- berculosis. The lobar variety is rare and occurs more often in adults than in children. Acute pneumonic tuberculosis is usually primary though it may occur secondary to chronic pulmonary tuberculosis. In the lobular type there is acute inflammatory broncho- pneumonia beginning in the smaller bronchi which are filled with cheesy substance while the alveoli are filled with catarrhal products. These areas are first grayish-red and later become white and caseous. By fusion they may re- semble the lobar type, but the lobular distribution can usu- ally be made out. These caseous areas, from 1-3 cm. in 2*4 PULMONARY TUBERCULOSIS. diameter, may be irregularly scattered throughout the lungs. Usually they are most numerous at the apex. Smaller, opaque, gray or caseous nodules may be present. Small or large cavities may be found at the apex or base of the lungs. Prudden has demonstrated that these changes may occur without the agency of a secondary infection. This form of pneumonia may follow the aspiration of blood into the bronchi in cases of haemorrhage (tuberculosis aspir- ation pneumonia.—Baumler). In the lobar type a single lobe or the entire lung may be involved. The affected area is gray, yellowish-white and caseous. The surface is smooth or granular, uniform- ly changed, and it may be very difficult to detect any tuber- culous foci. Softening and cavities may be present in the apex. In some cases the change is less uniform, there be- ing aggregated masses of caseous areas surrounded by hyperaemic or consolidated tissue. The onset of the lobular form is variable. Haemorrhage may be the initial symptom, followed by chills, high temper- ature, rapid pulse and respiration, and rapid loss of flesh and strength. In children the disease usually follows measles or whooping-cough. While convalescing from these dis- eases the temperature may rise suddenly, there is cough, dyspnoea, and signs of consolidation. The case commonly ends fatally in from a few days to two or three weeks, or, with the appearance of hectic fever and sweats the disease may pass into a condition of chronic phthisis. The temperature in the lobular form is high and of a remittent type varying from 101-104^ F. In the later stages with diminished vitality the temperature may range from 96 or 97° F. in the morning, to 103W F. in the evening (Fowler). In the lobar type of the disease the onset is sudden. There is chill, rapid rise in temperature, pain in the side, cough, mucoid or rusty sputum, dyspnoea and, perhaps, cyanosis. In all respects the attack is like an ordinary pneumonia. At the eighth or tenth day, however, the tem- perature becomes irregular, the pulse rapid, expectoration muco-purulent and, perhaps, greenish (Traube), and sweat- ing may occur. Death may occur in from one to four weeks; the case may be prolonged for two or three months or it may become one of chronic phthisis. Chronic pneumonic tuberculosis (chronic ulcerative tuber- culosis, fibro-caseous tuberculosis). This form of the disease constitutes the great majority of the cases of pulmonary tuberculosis in which caseation and excavation occur. PULMONARY TUBERCULOSIS. 2*5 While the lesion is primarily tubercular, in nearly all cases it ultimately becomes a mixed infection, and some of the best known and most troublesome features of the disease are due to secondary infection with pyogenic organisms. The lesions of this variety of tuberculosis show great variety in nature and distribution. Broncho-pneumonia, miliary tubercles which are disseminated either by the air passages or the vessels, sclerosis, caseation and excavation are the chief changes. The formation of cavities in this disease is favored by the occurrence of secondary infection (Prudden). Tubercular changes in the bronchi, bronchial glands, pleurae, and in the other organs and tissues of the body are frequent. Tubercular laryngitis is common in this form of the disease. The onset of chronic pneumonic tuberculosis is very varied. It may come on insidiously, and marked changes may have occurred in the lung before any symptoms de- velop. Again, the same insidious invasion is accompanied only by symptoms of anaemia and gastric disturbance, par- ticularly in young females, or there may be irregular fever simulating malaria. In any of these types if the tempera- ture is watched it will usually be found from one-half to one degree above normal in the afternoon or evening. A per- sistent temperature of this kind is suspicious of, but does not necessarily indicate, tubercular infection. In many cases there is a history of repeated attacks of bronchitis which gradually become prolonged, or a winter cough may be protracted through the summer and be ac- companied by emaciation and night sweats. This is a fre- quent history following influenza bronchitis occurring dur- ing the winter or spring months. Many cases present no history but that of a more>or less constant cough which is dry and not troublesome. They will often not acknowledge a cough unless closely questioned. There is, at times, a history of one or more attacks of pleurisy, either dry or with effusion; the pleurisy has disap- peared,'but following it there is a history of cough, fever, night sweats and emaciation. In some instances the larynx is the primary seat of the 2*6 PULMONARY TUBERCULOSIS. disease, though usually it is involved secondarily. There may be laryngeal irritation and cough, mucoid expectora tion, huskiness and aphonia. Haemoptysis may be the first symptom in some cases. There may be marked haemorrhage followed within a short time by signs of lesion in the lung, or the haemorrhage may be slight and the interval before lung symptoms develop may be long. In other cases there is repeated slight haem- orrhages. In many cases when any considerable hasmor- rage occurs there is already disease of the lungs. Haemor- rhage is present in from sixty to eighty per cent. ■ of the cases of pulmonary tuberculosis (Osier).* In most cases it recurs, and may be a prominent feature (haemorrhagic phthisis). The bleeding is usually sudden, the first intima- tion the patient has of it is a salty, warm taste in the mouth. The haemorrhage may come on while coughing but more often does not. The amount is usually small especially in the early history of the case. [In 69 per cent, of 4,125 cases of haemoptysis in the Brompton Hospital the quantity of blood expectorated was less than one-half of an ounce.] Cervical or axillary tuberculous adenitis may precede by months or years the development of pulmonary lesion, though in some cases the development of the two conditions is coincident. Pain is frequently complained of and is usually con- nected with pleurisy. It is most often felt in the lower and lateral regions of the chest, or beneath the upper portion of the scapula. Cough is a very variable symptom. It may be dry and hacking at first, later it is loose, with muco-purulent expec- toration. It may be paroxysmal if there are cavities. Par- oxysmal morning cough may be followed by nausea and vomiting. The respiration is usually increased, somewhat in pro- portion to the amount of tissue involved and to the degree of fever. It may be 26-30 per minute during the exacerba- *Stricker's percentages for soldiers are: without special cause, 86.8 percent. tuberculous; after exercise, 74.4 per cent, tuberculous; after swimming^ or direct jurny to the thorax, one-half not tuberculous. PULMONARY TUBERCULOSIS. 2*7 tion of all symptoms which attend the invasion of new areas of lung tissue by broncho-pneumonia. Dyspnoea is not common even when considerable lung tissue is involved, ex- cept in chronic cases with marked sclerosis and a weak heart. Nervous dyspnoea may be troublesome at times. Cy- anosis is rare except where miliary tubercles invade the sound portion of a lung partly crippled by chronic disease. Fever is an almost constant element of the clinical his tory of chronic tuberculosis. There are apyrexial periods, and in arrested tuberculosis fever will be absent. As a rule it is a fair indication of the activity of the process in the lungs. Every variety of range is exhibited. In the early stage or in quiescent cases the fever may range from 9* to 99° F. As the disease advances and softening occurs, the fever will range from 99 to 101° F., the morning remission may be as low as 97w F. A sudden and maintained eleva- tion of 102-103° F. is indicative of a new area of lobular in- flammation or a new tract of miliary infiltration. Whatever type the temperature may exhibit it may maintain this type for weeks or months at a time if there are no disturbing el- ements.* Towards the termination of a fatal case the tem- perature may be subnormal for a day or two. The cases exhibiting the most irregular and fluctuating temperature are those in which secondary infection exists. The pulse is very variable. It is rapid with consider- able fever or with extension of the disease. According to Wilson Fox it is influenced more by the patient's strength than by the degree of fever. The quickest pulse is usually observed in the morning (Smith, Fox). There is no reliable relation between the pulse and the respiration. Nervous influences affect the pulse greatly. In the late stages the puis© is very rapid and of low tension. Pseudo-angina and palpitation are fre- quent. According to Powell palpitation is most frequent in patients with considerable retraction of the left lung. Night sweats occur in most cases though some patients escape entirely. They occur towards morning when the *Maragliano, Stern and Erbman believe that hectic fever is due to secondary nfection ahd not to tubercular infection. Fowler dissents strongly from this view 2** PULMONARY TUBERCULOSIS. fever drops, or at any time when the patient sleeps there may be sweating. Sweating may appear early and be per- sistent, but its appearance usually coincides with the begin- ning of softening. The severest sweating may disappear late in the disease without any reference to treatment. Emaciation is usually progressive as long as the pro- cess in the lung is advancing, though increase in weight may occur while the disease is progressing if the patient's nutrition is forced. As a rule stationary or increased wTeight is a sign of quiescence of the disease. Gastric crises may occur, especially in neurotic subjects and insane delusions and halucinations are sometimes pres- ent. Diarrhoea may occur early from errors in diet. Occur- ing late in the disease it is indicative of intestinal ulceration. Constipation may be troublesome at times. Anal fistula usually occurs late in the disease and is much more common in males than in females. Symptoms and diagnosis.—In miliary tuberculosis besides the dyspnoea, cyanosis and peculiar type of fever, we have the physical signs of bronchitis combined with those of a varying degree of empysema, and, perhaps, those of irregular areas of broncho-pneumonia. The percussion note may be irregularly dull at the base; in the anterior regions of the chest it may be hyperresonant. Sibilant, sonorous, and fine mucous and subcrepitant rales may be present. Pleuritic crepitations may occur from local tubercles (Jiir- gensen). High-pitched, tubular breathing may be heard at the base of the lungs; in front and above the breathing may be low in pitch and expiration may be somewhat prolonged. Daily alteration in the percussion pitch may be due to the re-expansion of collapsed areas (Eustace Smith). Miliary tuberculosis associated with chronic lesion of the lungs may present few recognizable alterations in the physical signs. The degree of dyspnoea and cyanosis; the temperature range; together with the discrepancy between the physical signs and the general condition of the patient are important aids in diagnosis. Bacilli are often absent from the sputum. and frequently there is no sputum. Choroidal tubercles PULMONARY TUBERCULOSIS. 2*9 may be present, and signs of meningeal tuberculosis or other forms of general infection wTill aid in the diagnosis. When the lung is involved in connection with acute general tuber- culosis the case may resemble typhoid fever, but the tem- perature is less regular, may assume the inverse type or may be sub-normal in the morning. The Widal test may decide, though a negative result in the first four or five days does not exclude typhoid fever. Acute bronchiolitis in children and after measles or whooping-cough, may resemble acute miliary tuberculosis of the lung. The temperature range is more irregular in mil- iary tuberculosis, and in bronchiolitis the correspondence between the dyspnoea and the degree of pulmonary involve- ment is more evident. Fibroid tuberculosis. The symptoms of this form of tu- berculosis are those of sclerosis of the lungs with which it is clinically identical. In some cases there is an alar or pterygoid conformation of the chest (Galen, Aretaeus) char- acterized by winged scapulas, oblique ribs, increased length of chest, depressed shoulders and diminished anteroposte- rior diameter of the thorax. The costal interspaces are de- pressed and the inferior ones show inspiratory recession. The lateral expansion is diminished, the movement being mainly perpendicular. Depression of the supra and infra- clavicular spaces is present and the sterum may be de- pressed. The heart may be displaced and epigastric pulsa- tion may be present. The vocal fremitus may be increased or diminished, depending on the degree of induration, its proximity to the surface and the degree of emphysema pres- ent. Moderate induration and emphysema may give more marked fremitus than a more solid and airless portion of the lung. The percussion note may be high-pitched and hard, or resonant from emphysema. The respiration is weak with prolonged, high-pitched expiration. Wavy, interrupted or cog-wheeled respiration may be present. Fine, crackling rales may be heard in various portions of the lungs. If cav- ities are present they are usually dry and present the usua. signs which are apt to have an amphoric character. These 290 PULMONARY TUBERCULOSIS. changes in the lung are most marked in the apices. Retrac- tion of the apex below the upper level of the clavicle with signs of induration is decidedly indicative of tubercular dis- ease. Local changes with collateral emphysema may be difficult to detect. Repeated examinations of the sputum may fail to show bacilli, but sooner or later they can usually be found. In primary or secondary basic tuberculosis of a fibroid nature the diagnosis may be difficult, the only positive proof of its nature being the presence of tubercle bacilli. The pres- ence of old lesions in the apices may aid in the diagnosis. In chronic miliary tuberculosis of the lungs associated with mesenteric or intestinal tuberculosis the physical signs may be very indefinite. Acute pneumonic tuberculosis. In the lobar form the physi- cal signs may be those or ordinary pneumonia, i. e., dullness, bronchial breathing and bronchophony. Pleuritic friction may be present. The breath sounds may be feeble or, at times, absent. The diagnosis may be aided by a more re- mittent temperature than is common in pneumonia. The absence of crisis; the presence of rapid pulse, sweating, emaciation, mucopurulent expectoration, and, sooner or later, the presence of bacilli in the sputum will establish the diagnosis. The diagnosis must often be necessarily de- ferred till after the acute stage. Fowler remarks that "These cases are of very rare occurence, and any one who feared that every case of ordinary pneumonia he observed might prove to be of this nature would by his unusual alertness do more harm than good." In the lobular or disseminated form of the disease the first signs may be fine, crackling, metallic rales at the apex. just outside of the nipple, or diffuse rales all through the lungs. Local signs of consolidation, particularly breathing of a bronchial character and bronchophony may be heard, but if the consolidated area is not near the surface of the lung these signs are indefinite. Several disseminated areas of consolidation can sometimes be made out. If cavities are present they will manifest the usual signs. The diagnosis rests on the presence of bacilli in the spu- PULMONARY TUBERCULOSIS. 291 turn, or of elastic tissue if the lung is breaking down. Or- dinary broncho-pneumonia in children may, when attended with dilation of the tubes, be indistinguishable from tuber- cular pneumonia. If the sputum cannot be obtained it is well to withhold opinion as to the exact nature of the case. Chronic pneumonic tuberculosis. The subjects of this form of the disease present the pale, loose, dry skin, blue veins, flushed cheeks, pearly conjunctivae and pale mem branes which make up the composite general appearance popularly known as "consumptive-looking," which, taken with the clinical history, is often almost sufficient for a di- agnosis. Cough, which is one of the earliest symptoms, varies greatly in character and constancy. In some cases there may be little or no expectoration. The early history of fibrous, miliary, or caseous tuberculosis without softening is much more likely to show expectoration than is that of chronic pneumonic tuberculosis. When bronchitis precedes the dis- ease the expectoration is likely to be profuse. In the early stages it may consist of viscid, glairy, or watery mucus: later it contains small gray, greenish, purulent masses. If softening has occurred the sputum is muco-purulent and yellow or greenish in color and may contain flattened masses (numular sputum). Sputum of this kind is likely to come from cavities and has been considered characteristic of phthisis, but it may be present from chronic bronchitis. This sputum is heavy and sinks in water, a fact of much concern to some patients. The character of the sputum is changed by haemorrhage, gangrene, bronchiectasis and vari- ous other associated conditions. The sputum should be examined in every case for tu- bercle bacilli. They are most apt to be found in the small gray or yellowish-green masses found in the sputum. The examiner will use whichever of the various methods of staining that appears to him to be the most convenient and reliable. There is no constant relation between the number of bacilli and the activity of the process in the lung, nor does the continued presence of bacilli necessarily mean that the disease is progressing actively. As a rule dlminu- 292 PULMONARY TUBERCULOSIS. tion in the amount and purulency of the sputum and in the number of the bacilli indicates a lessened activity of the disease. Elastic tissue is an important element in phthisical sputum at times. It may come from the bronchi, alveoli, or from the arterial wall. That from the bronchi presents as a long net-wTork or as three or four long fibers lying close together; that from the alveoli shows bunched fibers with a curled or alveolar arrangement; that from the arteries may showT as a sheet of fibers. In order to examine the fibers place some of the purulent material upon a glass plate about four inches square and press it out into a thin layer with another plate about three inches square. Shown against a black background the elastic tissue appears as grayish-yellow spots which can be removed to an ordinary slide for further examination. (Andrew Clark's method.)* The curved and alveolar arrangement of the fibers is the most reliable evidence of destructive processes which are almost always due to tuberculosis. This method, howT- ever, is of less importance than formerly, owing to the more definite, reliable, and earlier information given by the presence of bacilli. Calcareous fragments are sometimes expectorated along with the sputum. According to Cabot the red corpuscles of the blood are normal in pulmonary tuberculosis and the haemoglobin diminished. Stein and Erbmann show that leucocytosis is present under certain condicions. They think it is not connected with tubercular infection but is due to secondary infection. The physical signs of chronic pneumonic tuber- culosis vary with the stage and extent of the disease. Inspection. The conformation of the chest may be indi- cative of disease though this form of tuberculosis occurs in chests of any shape or build. In the earlier stages inspec- tion may be negative through a loss of expansion of the apices is noted very early in most cases. It is often best *Fen wick's method is to boil equal parts of sputum and a solution of caustic soda (20 grains to the ounce) for a few minutes, Let stand for 24 hours in a conical glass. Examine sediment, The centrifuge will facilitate this process. PULMONARY TUBERCULOSIS^ 293 observed from behind the patient. As the disease progres- ses there is retraction of the supra and infraclavicular re- gions, flattening and widening of the second and third in- terspaces below the clavicle, marked loss of motion and drooping of the shoulders. If the upper lobes are emphy- sematous the scapulae may be raised and the shoulders have an elevated appearance. The apex of the heart may be slightly raised, or displaced into the axillary region if much retraction of the left lung is present. When a considerable cavity has formed in the apex the chest wall from the second to the fourth interspaces will be markedly flattened especially if there is induration and contraction of the tissues around the cavity. Palpation is very important in the early stages. Slight increase in fremitus is obtained early. From the anatomical conformation and distribution of the right bronchus the right apex exhibits normally a better marked fremitus than the left apex If the fremitus in the left apex is equal to that in the right it indicates disease; if it is greater, the indication is all the stronger. We must remember that a local area of moderate fibrosis combined with some degree of emphysema may, through better conduction facilities, give more marked fremitus than an area more advanced toward caseation but less easily vibrated. When a cavity has formed at the apex the fremitus is markedly increased. Palpation of the apices and lateral regions often gives a clear idea of the relative expansion of the two sides. Percussion. Slight increase in the pitch of the percus- sion note over the clavicles or in the supra or infraclavicu- lar spaces is one of the earliest signs of the disease. It is often best appreciated when the breath is held after a full inspiration. Loss of resonance above the clavicle from re- traction of the apex is often the earliest sign of a localized apical focus of disease. [There should normally be about a finger's breadth of resonance above the clavicle.] Dull- ness on firm percussion in the supraspinous fossa? may be present before it is apparent in front. If a cavity is formed the percussion note will be high-pitched, short, wooden, and tubular or tympanitic if the cavity is empty and the sur- 294 PULMONARY TUBERCULOSIS. rounding tissue is indurated. If the cavity is near the sur- face the cracked-pot sound may be obtained. Auscultation. Increased vocal resonance is an early sign of consolidation. Usually there is the same relative differ- ence in the vocal resonance of the two apices as is found in the percussion pitch. The right apex often shows some in- crease in the vocal resonance without the presence of dis- ease,—that is, above the accepted normal standard. In- creased resonance is often best heard behind over the snpra- spinous fossa or toward the point of the shoulder. Again, it may be best marked in the apex of the axillary space. Over a cavity the various sounds are cavernous or amphoric in character, and pectoriloquy may be obtained, often best heard with the whispered voice. The earliest change in the respiratory murmur is often a feebleness or partial suppression of the inspiratory sound with prolongation of the expiration which is slightly higher in pitch than normal. Again, both sounds may be harsh and higher-pitched, the greatest elevation in the pitch being during expiration. Later, both sounds are much increased in pitch, the exjfiration is much prolonged and is tubular and blowing in character. Over areas of lobular consolida- tion bronchial breathing and bronchophony may be heard. In the tissue adjacent to the diseased areas wavy, interrupted or cogwheel breathing may be heard, especially if there is a tendency to fibrosis. It is often obtained in the lower and lateral regions of the chest. Over a cavicy the typical breath sounds are cavernous in character,—a tubular, high- pitched inspiration followed by a prolonged, blowing ex- piration which is empty and tubular in quality and lower in pitch than the inspiration. The breath sounds may be markedly amphoric in quality.. Fine, crackling, subcrepitant, localized rales may be heard early, or more diffuse, moist rales may be present. As softening progresses the rales become more numerous, larger, softer and liquid in character. When rales are in- distinct and doubtful in character they are heard more plainly with the respiration which follows the act of cough- ing. Gurgles and tinkling may be heard at times in cavi- PULMONARY TUBERCULOSIS. 29") ties. Large cavities in the left apex may present the heart sounds very plainly, or even a transmitted systolic murmur. Systolic gurgles and clicks may be heard in a cavity if it is near the heart. A large cavity with thin walls and fluid contents may give a succussion sound (Walshe). Cardiorespiratory murmurs, and pleuro-pericar- dial friction sounds are frequently heard. Areas of consolidation close to a large or dilated bron- chus may give auscultatory sounds simulating those of a cavity in the lung tissue. Extensive retraction of the lower lobe with an emphysematous condition of the upper lobe may give auscultatory signs simulating those of a cavity in the region of the interlobular septum. The lat- eral extension of these signs and the comparative condition ' of the two lobes v\ ill differentiate. An absolute diagnosis may rest on the presence of ba- cilli in the sputum. While our knowledge of the relation of this organism to tuberculosis of the lungs greatly facilitates our diagnostic ability in doubtful cases, it is often the case that great attention is given to the demonstration of bacilli to the neglect of careful study of the physical signs and clin- ical history which is even more necessary to a thorough appreciation of the individual case. Many cases of insidious advent can be diagnosed by the physical signs before eruption into the bronchial tract ex- hibits bacilli in the sputum. Again, bacilli are sometimes absent from the sputum when there is well-marked local evidence of disease. Even in cases of moderately acute bronchial invasion bacilli may be temporarily absent while the apical localization makes it certain that the process is tubercular. We occasionally see local catarrhs in the apex presenting rales but no change in percussion pitch; which show no bacilli and which get well without leaving any evi- dence of permanent disease. However, any local change in the apex presenting raise in the pitch of the percussion note should be regarded as tubercular until it is proven other- wise. In all cases of pulmonary tuberculosis bacilli will be found sooner or later if sought for, and in primary basic 296 PULMONARY TUBERCULOSIS. tuberculosis or in secondary tuberculous processes engraft- ed on chronic non-tuberculous basic lesions, the detection of bacilli may be the only way of deciding the nature of the process. In fibroid lesions—syphilitic or otherwise—ac- companied with cavities the demonstration of the persistent absence of bacilli may be the sole means of proving the non-tubercular nature of the case. In cases with haemor- rhagic onset the early presence of bacilli may decide the nature of the case long before any local change can be de- tected. Complications.—The complications which, most often modify the course of pulmonary tuberculosis are pneumonia. bronchitis, pleurisy, pneumothorax, haemoptysis, laryngeal tuberculosis, peritonitis, albuminuria and diarrhoea. Pneumonia. Acute pneumonia is rare in pulmonary tuberculosis. It is a dangerous complication and while re- covery may occur, the progress of the tuberculous lesion is hastened; markedly so if softening of the pneumonic area occurs. Bronchitis. The danger from bronchitis usually lies in its liability to cause broncho-pneumonia or extensive em- physema. When bronchitis is extensive it may be the di- rect cause of death. Pleurisy. The association of pleurisy with tuberculosis of the lung is frequent and its exact bearing on the history of the latter is not easy to define. Occurring early in the history of the case it gives, according to Osier, "a stamp of chronicity to the case.'' Sero-fibrinous effusion may be absorbed. Purulent or haemorrhagic effusions are very unfavorable. In general miliary tuberculosis, sero-fibrinous effusions may be an expression of the general disease. In basic tuberculosis of the lungs- the occurrence of pleurisy, if not purulent or haemorrhagic, may modify the activity of the tuberculous process in the lungs. Pneumothorax. The acute pneumonic form of tuberculo- sis is more apt to be complicated by pneumothorax than are he chronic forms. In rare instances of disease of the PULMONARY TUBERCULOSIS. _:9/ middle or lower lung the collapse of the lung incident to the occurrence of pneumothorax may limit the extension of the lesion of the lung. When tuberculosis is limited to one lung the occurrence of pneumothorax may not be immediately dangerous, the air may be absorbed and partial re-expansion of the lung may take place. When the opposite lung is extensively diseased the occurrence of pneumothorax is dangerous and may be fatal in a few minutes. (In 39 cases of death after pneumothorax, the average duration of life was 27 days.— Douglass-Powell.) In some cases life may be prolonged for years. Hemoptysis. In the ear y stages of tuberculosis the oc- currence of haemoptysis is not of immediate danger, in the later stages it is of grave import on account of the possibil- ity of pulmonary aneurism. According to Williams, the percentage of deaths in a series of cases of haemorrhage in the various stages was: in the stage of infiltration, 13.95; in the stage of softening, 24.61; and in the stage of excava- tion, 67.74. Laryngeal Tuberculosis. This complication is generally unfavorable. It is usually of late occurrence. In cases where the lesion in the larynx is primary the course of the disease may be very rapid, while in other rare instances it may run a protracted course. The lactic acid treatment for laryngeal tuberculosis has modified the unfavorableness of the prognosis to some extent. Peritonitis. Any form of peritonitis constitutes a very unfavorable complication of pulmonary tuberculosis. The most dangerous form is acute general peritonitis from in- testinal ulceration with or without perforation. General tuberculosis of the peritoneum is rarely recovered from as a complication of pulmonary tuberculosis. Chronic localized tubercular peritonitis is less dangerous than the previous forms. Albuminuria. The importance of albumen in the urine depends entirely on the cause as determined by careful analysis of the urine, and on the presence of changes in the vessels, heart, and other organs. According to Fowler, in 29* PULMONARY TUBERCULOSIS. cases of albuminuria associated with pulmonary tuberculo- sis, amyloid disease of the kidney wras present in 6.1 per cent., parenchymatous nephritis, or interstitial nephritis in 6.7 per cent., and either miliary or caseous tubercles of the kidney in 6.5 per cent, of the cases. Diarrhoea. Severe diarrhoea may be fatal in the late stages of pulmonary tuberculosis. It is commonly due to ulceration of the intestine, or to lardaceous disease. In either event the prognosis is very unfavorable. Treatment.—In the treatment of pulmonary tuberculo- sis we include such measures of prophylaxis as are appli- cable to individuals who by birth or acquirement are predis- posed to the disease, also such means of prevention of direct infection as apply with more or less direct force to every in- dividual whether there be predisposition or not, and whose observance is demanded by public hygiene in order that the spread of pulmonary tuberculosis may be controlled. As our inherent vis medicatrix naturaj yet remains the only specific we possess against pulmonary tuberculosis it follows that the treatment of the disease consists in aiding the forces of nature in every way possible to develop indi- vidual resistance against the disease. The frequency with which quiescent tubercular lesions are found in the lungs of persons dying from other diseases emphasizes the potency of the natural cure of tuberculosis. According to Heitler the Vienna post mortem records showred that in 4.7 per cent, of 19,292 deaths not directly due to tu- berculosis the lungs contained old tuberculous lesions. Harris gives the percentage as 3*.* in 200 autopsies. Prophylaxis. The prophylactic measures against tuber- culosis should begin with the birth of the predisposed in- dividual, if, indeed, they should not begin sooner. The re- sults of sanitorium treatment in pregnant tuberculous fe- males and their issue gives force to the statement of Knopp that the "State and municipal care of consumptives should begin with the child in utero." As far as the legal restriction of the marriage of tuber- culous subjects is concerned there can be no question of the abstract benefit of requiring a clean bill of health in this PULMONARY TUBERCULOSIS. 299 particular despite disturbance of social ethics. The ques- tion of the marriage of persons with arrested tuberculosis of the lungs is not so simple. Females run much greater risks than males. It is better to give a straight-forward opinion on the subject—which is usually disregarded—and place the responsibility wiiere it belongs. The child of a tuberculous mother should be suckled by a wet nurse or be fed artificially. Special attention must be given the dietary during the first few years of life. When fed on cow's milk it is best to boil the milk. Attention should be given to the nose and throat, to the bronchial af- fections of childhood, and to the general health after the infectious diseases of early life. The best prophylactic measure for these children is an out-door life. They should. be literally turned out of doors to live in fresh air and sun- shine. They should sleep in wTell ventilated rooms and have a daily cold sponge bath. As the period of puberty ap- proaches we should be on the watch for conditions of anae- mia especially in girls. Syrup of the iodide of iron, cod- liver oil, and arsenic are useful at this period. Later on, in early adult life, those who are predisposed to tuberculosis should be advised to remove to a suitable climate for a per- manent residence. Measures of prevention include the careful inspection of dairies, abattoirs and their products, by competent officers. This is a matter of vast importance and one which state and municipal governments are coming to appreciate. Atten- tion to the sanitary condition of public places and convey- ances is also a matter where municipal regulations may be productive of much benefit. The compulsory notification of pulmonary tuberculosis is a municipal question which has received considerable dis- cussion. As an abstract question of public health there is much to be said in its favor. On the other hand the parallel as to the necessity of notification, between tuberculosis and the infectious diseases already on the notifiable list, is not readily apparent to the mind of the layman as the direct ori- gin of the infection can usuallv not be demonstrated. Neither is the parallel a just one as far as the benefits ac- 300 PULMONARY TUBERCULOSIS. cruing to the infected individual are concerned, nor will it be until there are state and municipal institutions for the treatment of indigent tuberculous subjects. Sir Richard Thorne thinks compulsory notification does more harm than good, that New York's experience demonstrates it to be ex- tremely partial, only effectual against tenement classes, and that the diminution of the death rate was already in prog- ress. In the absence of the ability of departments of health to do anything more than furnish gratuitous informa- tion, it is doubtful if compulsory notification is advisable. The information can be equally well distributed through the visiting and out-departments of medical institutions and such distribution should be required of them. It should be impressed on the tuberculous subject that carelessness in his habits is dangerous to himself as well as to others. He should expectorate only into a- sputum cup or cuspidor containing a five per cent, solution of carbolic acid, or into a small cloth which is to be immediately burned. He should under no circumstances swallow his sputum. The contents of the sputum cup should be burned twTo or three times daily and the cup boiled and disinfected. All eating utensils used by the patient should be washed separately and thoroughly boiled, as should also all soiled linen worn by the patient. Tuberculous subjects should sleep alone. Under proper precautions the dust from hospital wards containing tuberculous patients does not contain bacilli. The same precautions applied to the home life of patients would render the danger of infecting others practically ob- solete. Our measures of treatment may be classed as general, special and symptomatic. General Measures of Treatment. General methods consist in diet, tonic medication, antiseptic medication and open-air, sanitorium, and climatic treatment. Diet. The nutrition of tuberculous patients is a most important matter. The dietetic rules must be adapted to the state of the patient's digestion. If the digestion is good a liberal, mixed diet is advisable. If the digestion is poor every effort must be made to improve it, and with this end PULMONARY TUBERCULOSIS. 301 in view a change of climate or a sea voyage may be under- taken with great benefit. When this is impossible the pa tient should be kept at rest, if there is fever, and fed every three or four hours with small quantities of milk, butter- milk, koumyss, eggs, meat extracts or powTdered meat. As much time should be spent in the open air as possible. When the stomach is irritable the method of forced feeding recommended by Debove is useful. The stomach is washed out and a litre of milk containing an egg and 100 grammes of finely powdered meat is introduced through the tube thrice daily. If the patient is able to dispense with the tube the administration of a pint of milk containing an egg and a teaspoonful of somatose every four hours may be pref- erable. Patients with active tubercular disease require a great- er amount of nourishment than a healthy individual in order to compensate for the bodily waste. The results of forcing the amount of food as practiced at such sanitoria as that of Nordach in the Baden Black Forest are very encouraging when combined with the proper amount of fresh air and exercise. A couple of teaspoonfuls of milkine in eight ounces of hot water taken at bed time or during the night often relieves the cough and promotes rest better than a sedative draught. The same potion in the morning promotes expectoration and counteracts the depression so common at this period of the day. The routine administration of alcohol in tuberculosis is not advisable. Dry wines may be allowed with benefit in some cases. In advanced stages a little champagne or whisky or rum taken in a hot drink may be of occasional benefit. Tonic medication. The most reliable tonic remedies are cod-liver oil, strychnia, hypophosphites, iron, and ar- senic. These remedies, as a class, are not adapted for the periods of high fever. Cod-liver oil is of benefit, when easily assimilated, in improving nutrition. It is more acceptable to children than ot adults and is better tolerated in winter than in summer. 3(>2 PULMONARY TUBERCULOSIS. Its value in tuberculosis has been much over-estimated in the past. The oil alone generally disturbs the digestion before enough has been taken to be of any great benefit. It is best administered in capsules in combination with creasote, or some of the many "tasteless"' preparations may be used. The dose should not be large enough to disturb the stomach. The so-called extracts of cod-liver oil appear to be as bene- ficial as the oil itself. After several years continuous use of them I am convinced that they stimulate digestion and improve the bronchial catarrh associated with tuberculosis to as great an extent as the oil itself when the latter is well borne. They are not irritating to the stomach and can be given to children without difficulty and can be given contin- uously at any stage of the disease with great benefit. Strychnia is a valuable remedy in tuberculosis. Williams regards it as a specific for the retching of phthisical patients, and says it enables them to take cod-liver oil continuously without gastric derangement when given in doses of from 3^ to ¥1¥ of a grain. Mays gives strychnia an importance next to rest and nutrition in phthisis. He gives it in doses as high as 4- of a grain. Pepper has reported excellent re- sults from the continuous use of strychnia. While Mays' estimate is an exaggerated one, strychnia is a very useful remedy. All other medicines seem to have a better influence when the patient is under the effect of stimulating doses of strychnia. A convenient method of administration is to be- gin with six drops, thrice daily, of a solution containing two grains to the ounce; increase one drop every third day until the patient is taking as much as is well borne (usually about 15 to 1* drops). Insomnia is sometimes the first symptom of overdosing. The alkaline hypophosphHes are valuable in pulmonary tuberculosis. The combined bypophosphites have, after a long period of t: ial, seemed to me to be of little use, indeed, in many instances, seemed to be distinctly harmful. On the other hand the hypophosphite of soda is of great benefit in many cases. It should be given in doses not to exceed two grains thrice daily, and is adapted to cases with little rise in temperature. If a temperature of 100-101° F. is present the PULMONARY TUBERCULOSIS. 303 hypophosphite of quinia may be used. Hypophosphites are beneficial chiefly through their influence on nutrition. Darenberg says there is a great loss of hypophosphites from the body in phthisis and thinks that they aid the forma- tion of fibrous tissue and the calcification of tuberculous for- mations. Hodgkinson concurs in this opinion. Iron is a valuable tonic in tuberculosis. According to MacKenzie the neutral preparations are best, and fever is regarded as a contraindication. Fowler recommends the syrup of the iodide, or the phosphate, in cases with glandu- lar enlargement in young subjects. He thinks Blaud's pill is useful if cough is not severe, but thinks that iron increases the cough and the tendency to haemorrhage. I have found the so-called "tasteless"tincture or the citro-muriate of iron, combined with the compound tincture of cinchona, of value in tuberculous cases. Arsenic is of use in some cases. Williams recommends it in the early periods and in cases combined with asthmatic conditions. Osier advises the use of Fowler's solution in all varieties of tuberculosis. Fowier and Burney Yeo have not seen much benefit from the use of arsenic. Arsenic is of particular value in anaemic cases and the iodide of arsenic is sometimes of special value. On the whole arsenic does not seem to be as efficient in combating the malnutrition of tu- berculosis as it is in the malnutrition of other conditions and Jaccoud's statement that "It would be difficult to find an agent more capable of combating the malnutrition always existent in the disease" seems to be an overestimate of the value of the drug. Iodoform is, according to Ransome, one of the best drugs for aiding nutrition and relieving cough. Europhen may be used as a substitute for iodoform. Flick uses an in- unction composed of Europhen, 3i Oil of rose, gtt. i Oil of anise, 3i Olive oil, §iiss A tablespoonful of this is rubbed into the arm-pits and thighs at night. The odor may be removed in the morning by sponging with bay rum. 304 PULMONARY TUBERCULOSIS. Antiseptic Medication. It is generally admitted at pres- ent that it is impossible to directly inhibit the tubercle bacil- lus through the internal administration of anti-bacillary remedies, and that the good effect of these remedies when given internally is through their effect on nutrition by stim- ulating digestion and assimilation. Creasote is the principal remedy of this class. Known since 1*30, and its use in tuberculosis described by Bouchard and Timbert in 1*77, it was not much in use until Summer- brodt in 1**7 gave the results of the treatment of 5,000 cases with creasote. Summerbrodt believed in its specific proper- ties and ardently advocated its use in immense doses. It is generally conceded that moderate doses give better results than are obtained by attempting to saturate the system with the drug. The best results seem to be obtained from doses not to exceed from five to ten minims. Pure beechwood creasote is best. It may be given m capsules, or the crea sote "perles" may be used, or it may be given in cod-liver oil, malt, or wine with vegetable bitters. The most conven- ient method is to drop it into empty capsules and follow its administration with a glass of milkine. Carbonate of crea- sote (creasotal) is a more eligible preparation in that it has not the disagreeable odor of creasote and is not so irritating to the stomach. It is a liquid, has little taste, is said to contain 92 per cent, of creasote, and in the intestinal canal it splits up into creasote and carbonic acid. It may be given beaten up with the yolk of an egg, or may be given in cap- sules. The dose is, at first, five drops after meals. Leyden's method is to increase three drops daily up to twenty-five drops; after two or three weeks it is reduced gradually to ten drops, and subsequently the dose is again increased. Guaiacol, a derivative of creasote, is much used as a substitute for the latter. Aside from its odor it is a more eligible preparation than creasote. It agrees better with the stomach, and it has seemed to me, after several years continuous use of guaiacol, that the results were better than with any other .preparation of this class except with the pure creasote in such patients as tolerated the creasote un- usually well. Guaiacol may be administered in the same PULMONARY TUBERCULOSIS. 305 way as creasote and in about the same dose. From five to ten drops appear to give about the best results. The follow- ing is a useful formula: Guaiacol, lii Alcohol, 3v Wine of cod-liver oil, Ixii *Dose,.a tablespoonful. Guaiacol may be given hypodermically, using 1 to 7 minims of sterilized guaiacol and injecting deeply. It may also be used by inunction, giving, once in two or three days, 10 to 60 minims either undiluted or with olive oil, glycerine, or tincture of iodine. These are, however, objectionable methods with no obvious advantages. Carbonate of guaiacol may be given in cachets, or in capsules in doses of from five to fifteen grains thrice daily. It is well borne by the patient but does not appear to be as efficacious as liquid guaiacol. Benzosol is an antiseptic of value but in my experience has not been of special value in tuberculosis. The dose is from five to ten grains. Guaiaco late of piperidine is recommended in doses of from five to twenty-five grains. According to Chaplin and Tunnicliffe it is safe, causes no unpleasant effects, is exceedingly well borne, and patients under its influence improve in appetite and strength. Iodo-guaiacol camphorate, eosote (valerianic acid ester of creasote) and various other combinations of creasote are recommended but do not appear to have special therapeutical advantages or power over those already men- tioned. The use of antiseptic inhalations and sprays is of ad- vantage in pulmonary tuberculosis in lessening the amount of expectoration, modifying the cough, and preventing in- *The following formula is ax eligible one for preparing the above preparation. Gaduol, 64 grains. Guaiacol, 128 minims. Alcohol, 1 fl. oz. Fuller's earth, 4 drams. Peptonized manganese, 2 drams. Water, 2 fl. oz. Sugar. 2 oz. Port wine, q. s, to 1 pint. Mix the gaduol. guaiacol and alcohol and triturate thoroughly with the Fuller's earth. Dissolve the pep. manganese In the water, add the wine and sugar and mix thoroughly with the gaduol and guaiacol mixture. Let this mixture stand for a day, shaking occasionally. Filter nnd pass enough wine through the filter to preserve the volume. 306 PULMONARY TUBERCULOSIS. fection of the larynx. Burney Yeo recommends creasote, carbolic acid and chloroform for the latter purpose. Fox thinks antiseptic inhalations of value. Eucalyptol, iodine in ether, menthol, aristol, oleum pini sylvestris, camphor etc., may be used. Douglass recommends the use of euca- lyptus oil made from the leaves of the eucalyptus globulus and administered by saturating the air of the patient's room by means of suspended cloths dipped in the oil, and by the inunction of three or four drams of lanoline ointment con- taining three drams of oil to the ounce. Inhalations of the oil of cinnamon is highly recommend- ed by Lucas-Championniere, and by Hilton Thompson. The results are said to be diminution of cough, expectoration, temperature, number of bacilli, and increase in weight. Intra-tracheal injections of eucalyptol, menthol and other substances have been practiced with alleged good results. While this method is of benefit in bronchiectatic conditions in phthisical cases, it does not appear to be of any special benefit to the disease of the lung. Injections of a dram of a solution composed of guaiacol, 2 parts; menthol, 10 parts; olive oil, 88 parts may be used. The direct injection into the lung tissue of iodine, car- bolic acid, creasote (3 per cent. sol. in sterilized olive oil), iodoform and other substances has bee^a practiced and is strongly recommended by Pepper. When carefully admin- istered such injections are, as a rule, not dangerous though serious results may follow them. Treatment by compressed air either pure or saturated with creasote has been attended with benefit in some cases. It has, however, not yet been demonstrated that the introduction of antiseptic substances into the lungs by any of these methods is attended with any permanent improvement of the diseased area of lung tissue. and while it is possible to introduce, by inhalation, oil solu- tions directly into the smaller bronchi, and, possibly, the al- veoli also, the benefit, in phthisis, is probably confined to those tissues which are in direct contiguity with the patent air passages. When we carefully review the equivocal position of the old and tried medicaments for pulmonary tuberculosis, as PULMONARY TUBERCULOSIS. 307 well as the thousand-and-one modern "cures," we are obliged to admit that we are not yet in position to dispute Laennec's statement that "although the cure of tuberculosis is possible for nature, it is not so for medicine. " Fresh Air Treatment. The benefit to the tuberculous subject of the systematic indulgence in fresh, pure air is universally conceded by all observers. This recognition of the power of fresh air is admitted in no equivocal terms Wilks says ' 'The only remedy known for consumption is air, air, fresh air." Ransome says "Fresh air night and day before .everything else." Trudeau's experiments on confined and unconfined rabbits illustrate the value of the open-air treatment of tuberculosis. The fresh air treatment may be carried on with the pa- tient at home or at a suitable sanitorium, without a change in climate. At home the fresh air treatment is more or less difficult to manage, especially in the cities. A partially successful attempt, however, is better than to.house a pa- tient in a stuffy, ill-ventilated room, dope him with medicine and blame nature for the result. The patient should have the sunniest, brightest room obtainable. The windows should be kept open during the day, and partially so at •night. If there is active disease with fever the patient should be kept in bed, or if there is a porch or yard avail- able he may be wrapped up and placed in an invalid's chair and allowed to spend four or five hours daily in the open air. Neither cough, fever, night sweats, or haemorrhage contraindicate fresh air. Ransome says that nothing re- lieves the fever so much as fresh air. Moderately low tem- perature is not important, but wetness and high winds should be guarded against. If the patient is well enough to be about he should spend six to eight hours daily in the open air and take a daily amount of exercise which must be specified by his physician. The sanitorium treatment of tuberculosis has risen in importance because of the results obtained at such institu- tions as those of Nordach, Falkenstein, Gobersdorf, Davos, etc., in Europe, and at the Sharon sanitarium near Boston, the Adirondack sanitarium, the Asheville sanitorium, the :;os PULMONARY TUBERCULOSIS. Aiken sanitarium, etc., in this country, and various institu- tions in Canada. To obtain good results it is not necessary that the sanitaria be situated in an ideal climate. Burton- Fanning says that good results are obtained where climatic conditions are only moderately favorable, though the con- ditions most conducive to good results are pure, cool, brac- ing air, abundance of sunshine, dryness of soil, and eleva- tion above the sea. At the Victoria hospital for consump- tives, near Edinburgh, where the climate is by no means ideal, and the patients not of the most favorable class, with an average residence of less than three months, the results are said by Philip to be very encouraging. The plan of treatment in these sanitoria is to keep the patient in the open air during the day as much as possible without regard to the weather except in special cases. Very liberal diet is given. The windows of the patient's room are wide open all day, and sufficiently so at night to insure good ventila- tion. The average temperature of the rooms is kept at from 60-65° F. Exercise, bathing, medication and all auxilliary means are employed to hasten recovery. Daily observation is given each patient. These institutions, con- ducted under the supervision of competent and reliable men, in whom the profession may repose confidence, furnish bet- ter opportunity for recovery to a patient than he will find by adopting climatic treatment in his own way, and without intelligent direction. There is great need in this country for sanitoria near our large cities where patients with moderate incomes may be treated at a small expense. It is to be hoped that the state and municipal governments will soon realize that there is not only humanity, but also economy, in the establish- ment of public institutions on the sanitorium plan for the treatment of their indigent tuberculous residents. In the climatic treatment of tuberculosis the open air feature must not be neglected. Patients sometimes have the idea that if they make a suitable change in climate they must perforce get well without any effort on their part. The value of any climate is in direct ratio to the number of days throughout the year which the patient can be in the PULMONARY TUBERCULOSIS. 309 open air and sunshine. The average temperature is of secondary importance. The majority of the patients with good family history and in the early stage of the disease will get well in any climate if they live an outdoor life. Proper accomodations and diet are not always obtain- able in desirable climates and this must be considered when patients are not able to endure an out-door life. Those who can live out doors can usually get along with such food as can be obtained. A camping trip across our western or southwestern states is one of the best methods of utilizing the fresh air and climatic methods of treatment. The earlier the climatic change is made the better the chances for recovery. It is very difficult to persuade patients to break up business and social associations early enough to give them the best results from climatic treatment. Later, they are not only willing, but insist, against advice, on a change of climate. In case of improvement it is difficult to keep patients in a proper climate for a sufficient length of time. Properly conducted sanitoria in our own localities would obviate some of these difficulties by affording a place where patients could be kept under proper conditions for a portion of the year. In deciding the advisability of a change of climate we must be governed entirely by the patient's condition, and not by the anxiety of himself and friends. Patients with high fever, night sweats, loss of flesh, extensive areas of lung involvement, or cavity formation, should not be allowed to go away from home. The various climates may be divided into those of high altitudes, the dry, warm climates, and the moist, warm climates. High altitudes possess, according to Williams, dim- inished barometric pressure—rare atmosphere, and dia- thermacy or increased facility of transmission of the sun's rays which causes an increase in the difference between sun and shade temperature of 1° F. for every rise of 23r> feet. The o-eneral result in selected cases of chronic tuberculosis being excellent: improvement in K-J per cent,, great im- provement in 74 per cent., disappearance of all symptoms 310 PULMONARY TUBERCULOSIS. in 41 percent.; local conditions show 75.5 per cent, im- proved, 5.5 per cent, stationary, and 19.18 per cent, worse. Both sexes do well. The most favorable age is from 20 to 30, and those with hereditary disease are especially ben- efited. Cases of incipient disease, with haemorrhagic tendency, are often much benefited by high altitudes, though such per- sons should not be suddenly changed from a low to a high altitude. Patients with a temperature above 101° F. should not be sent into high altitudes, and the latter is contra- indicated in patients with extensive lung involvement, cav- ities, aneurysm, laryngeal involvements, catarrhal tubercu- losis, all varieties of acute disease, weak heart, emphysema, and chronic varieties of tuberculosis when much lung tissue is involved or there is extensive degree of fibrosis of the lung, particularly where the heart is weak. A residence of from eight to twelve months at least is necessary in order to obtain benefit from high altitude. Of the higher altitudes in this country the Colorado, New Mexico and Arizona resorts are the best. Asheville and the Adirondacks are the best of the more moderate elevations. Such moist, warm climates as Florida (Gulf coast), the Bermudas, the Maderia Islands, Malaga, the Island of Cor- sica, and Falmouth in Great Britain are the best. They are adapted to cases with limited lung space, emphysematous and bronchial conditions, and weak hearts. Dry, warm climates, like the lower portion of the Rio Grande Valley, southwestern Arizona, southern California, various points in Georgia, the Carolinas and eastern Ten- nessee in this country; the Riviera, Egypt and Algiers are the most noted points. According to Foster it is doubtful if the Mediterranean offers the best climate for the majority of cases. Hillier praises South Africa, and Sand with enumerates the advantages of the Egyptian deserts. Ocean voyages, while beneficial in some cases, are con- traindicated, according to Parkes Weber, in advanced cases, cases with fever, in laryngeal and in intestinal tuberculosis, and in cases associated with advanced arterial sclerosis or cardiac disease. PULMONARY TUBERCULOSIS. 311 Special Treatment. The treatment of tuberculosis with special preparations like the new (T. R.) tuberculin, Mar- agliano's anti-tuberculosis serum, Hirschfelder's oxytoxins, etc., is yet in an experimental stage, and the one thing definite in regard to it is that the literature of the past five years on this subject will make curious reading half a cen- tury hence. Trudeau, whose experimental work with various serums at the Saranac laboratory gives his opinion weight, thinks that the outlook for an efficient tuberculosis antitoxin is not entirely hopeless. Symptomatic Treatment. The symptoms which most often demand attention are the fever, cough, sweating, diarrhoea, haemorrhage, and gastric disturbances. Fever is almost constantly present in pulmonary tuber- culosis and is, to some extent, a measure of the intensity of the disease. Its reduction is a most difficult therapeutic measure, indeed, so little is accomplished toward the well- being of the patient by the reduction of the fever by drugs that it is only when the fever is unusually high that it should be attempted. The depression resulting from the use of the coal tar products overbalances the slight benefit derived from them. The combination of two and a half grains each of phenacetine and quinine is often of use given every three or four hours or every two hours for three doses just before the rise in temperature in a septic type of fever. Quinine alone must be given in large doses which are not always well borne. When the fever is above 101° F. the patient should be kept at rest, with as much fresh air as possible. Ransome says that nothing, in his experience, relieves the fever so much as fresh air and sponging with cold water and vinegar. Fever is no contraindication to fresh air and as much of the latter should be had as is pos- sible without overexertion. Sponging with tepid cologne water is grateful and useful. Cough is a troublesome symptom and one which patients are usually anxious about. It is well with the cough, or with the fever, to trust to general measures as much as pos- sible for relief. If cough is troublesome at bed time, or paroxysmal in the morning, a cup of hot milkine will often 312 PULMONARY TUBERCULOSIS. afford much relief. Nauseous cough mixtures are to be avoided, and when cough medicines are prescribed the} should be as simple as possible. In nervous, irritable peo- ple Hoffman's anqjlyne is often very useful. A mixture con- taining to each dose | gr. of morphia or \ gr. of codeia, 10 drops of dilute hydrobromic acid, and syrup of tolu q. s ,will be taken longer, with more relief and less complaint, than most other cough mixtures. If the cough is hacking and very persistent we may use i gr. of codeia, 1 gtt. of fl. ext. of cannabis indica, 3 grs. of muriate of ammonia, and syrup of tolu q. s. In cases with considerable bronchitis and scanty expectoration we may use muriate of ammonia, gr. 5; codeia, gr. I; tincture of Pulsatilla, gtt. 6 to H;liq. am. acetat., gtt. 20; elix. simp., q. s. In laryngeal cough we may use inhalations. sprays and sedative troches. Oil solutions of the various antiseptic drugs are of great use in relieving cough and ex- pectoration when given by inhalation. Warm applications or counter-irritation to the chest may be useful. Lozenges of acacia and licorice are useful in laryngeal cough. Spray- ing with a 2 to 3 per cent, solution of menthol or aristol; in- halations of 20 drops of a saturated solution of menthol, or a like amount of equal parts of creasote or guaiacol with spirit of chloroform when the membrane is dry and irritated may be of use. With laryngeal catarrh we may use a tea- spoonful of compound tincture of benzoin in a pint of water near the boiling point for inhalation. With profuse secre- tion from the mucous membrane we may find 3 to 5 drops of tincture of belladonna and half a teaspoonful of syrup of senega every four hours of value. Night sweats are a troublesome through erratic symp- tom in tuberculosis. When regular and severe they weaken the patient and should be stopped if possible. A cool sponge bath in the morning followed by thorough friction of the body will often lessen the sweating. Atropine is the most useful remedy. It should be given at bed time in ^ to T\ grain doses. Camphoric acid is, next to atropine, the best remedy for sweating. It is best given in three doses of five or ten grains each (in capsule) at 5, 7 and 9 o'clock in the evening. Agaricin (TyTV g*-) may be given six hours PULMONARY TUBERCULOSIS. 313 before the sweating takes place, or, as I have found useful, T\ of a grain may be given at 2 and 7 P. M., followed by thirty drops of fluid extract of pinus canadensis at bed time. Picrotoxin (^ gr.) may be given at bed time. Zinc oxide (5 gr. in pill) is sometimes useful. If profuse sweating oc- curs whenever the patient sleeps it is an indication for stim- ulants and nourishing drinks. Diarrhoea may be troublesome when there is acute or chronic ulceration of the intestines. In the acute form ten grain doses of bismuth (sub-carbonate or sub-gallate) with five drops of deodorized tincture of opium and a like amount of spirits of camphor every three or four hours is useful. Dover's powder with bismuth is of service. Starch enemata, plain or with opium, may be used. The acetate of lead and opium pill is useful. If the discharge is watery and profuse ten drops of dilute nitric acid with five drops each of tinc- ture of opium and tincture of camphor given in simple elixir will be of use. In the diarrhoea of chronic ulceration the diet is very important. Such drugs as acetate of lead (2 to 3 gr.), sulphate of copper {i to i gr.) combined with opium in pill form, are of use. Bismuth (gr. 20), and co. ipecac pulv. (gr. x) may be given in milk every 4 to 6 hours. Tincture of catechu, gtt. 20; tinct. opii deodor., m 5; mist, creatae, 5 iv, may be tried. Fluid extract of coto bark in five minim doses may be useful. When the lower intestine is affected lead and opium pill combined with starch enemata (tr. opii, gtt. xx too ss; mucil. amyli 5 ii) is of great service. Haemorrhage is to be treated by rest and opium (mor- phine hypodermically). If the vascular tension is high lower it with aconite and sodium bromide. No stimulants should be given. Tincture of hamamelis in 20 to 60 minim doses is recommended. In profuse haemorrhage, with low temperature, we may use ergotin hypodermically. Tempora- ry ligation of the four extremities is efficacious in profuse haemorrhage, and from j\ to -g\ of a grain of atropia may be given hypodermically. Astringents, as a rule, do no good in the pulmonary haemorrhage of tuberculosis. Gastric disturbances are to be avoided, to a large ex- tent, by the general treatment and attention to diet. Acidi- 314 PULMONARY TUBERCULOSIS. ty and flatulence may be relieved by bismuth and bromide of sodium or strontium. For loss of appetite without di- gestive disturbance Fowler recommends bicarbonate of soda, gr. xv.; dilute hydrocyanic acid, m iii; comp. inf. of gen- tian 5i. Gastric crises may occur which must be tided over by restricting the diet to liquid food. Vomiting may occur through the irritation produced by the severe coughing or through some sore spot or sensitive area in the throat, at- tention to which will relieve the vomiting. The nausea so frequently present may be controlled by small and frequent doses of lime water containing one drop of carbolic acid to the ounce, or by small doses of calomel and soda. Pain from pleurisy may be controlled by strapping the chest, painting the surface with tincture of iodine, applying belladonna plasters, small blisters, or hot applications. The experimental work of Biondi, Schmidt, Gluck and others show that a portion or the whole of a lung may be removed without fatal results. Lowson and Tuffier have successfully removed a tuberculous portion of the human lung with good results. While these cases demonstrate the possibilities of lung surgery, the application of such methods must be extremely limited in the treatment of tu- berculosis of the lungs. The surgical drainage of tubercu- lar cavities of the lung has generally been regarded with disfavor. It is not beyond argument, however, that this may be the most advantageous way of treating single cav- ities properly situated. Should the future discover a reli- able bacillicide for the after treatment of drained tubercu- lar cavities the question of operation would assume a differ- ent aspect. CHAPTER XIV. ACTINOMYCOSIS OF THE LUNGS. Bollinger described actinomycosis in 1877, and. in 1878 Israel described it as affecting the lungs, though the disease had previously been observed in man by von Langenbeck in 1845, and by Lebert in 1857. The disease is said to be some- what more common in Germany and Russia than in this country, and to be rare in England. It is much more com- mon in men than in women. The total number of cases of actinomycosis now on record is comparatively small. Pulmonary actinomycosis is an infectious disease of chronic course caused «by the actinomyces, or ray-fungus (strejttothrix actinomyces). ^Etiology.—The fungus which causes the disease gains entrance to the body through the respiratory or alimentary tracts. In the latter case the symptoms may be chiefly thoracic, as, when the disease affects the liver it may extend to the pleura and lungs and open through the ribs. The or- ganism has not been recognized outside of the body. There is no direct proof of infection through the flesh or milk of dis- eased animals. It is most likely that the infection occurs through the medium of the food. It is not positive as to just which group of bacteria the organism belongs, though it is credited to the streptothrix group. It is markedly polymorphous and occurs as small spherical or irregularly-shaped grains or masses of a sulphur-yellow color, and from one-half to two millimetres in diameter. These bodies present an internal granular mass and an outer zone of radiating mycelia which may present bulbous terminations. According to Bostrom the clubbing is due to hyaline degeneration of the filaments. These small masses which are characteristic of the disease are found in the granulations of the diseased area, or in pus from such 316 ACTINOMYCOSIS OF THE LUNGS. area. In the early stages of their formation they may be grayishin color. Morbid anatomy.—The lesions of pulmonary actino- mycosis are unilateral in the majority of instances. Accord- ing to Hodenpyl there are three groups of lesions: lesions of chronic bronchitis; miliary lesions resembling miliary tu- berculosis, the nodules are composed of groups of fungi sur- rounded by granulation tissue; destructive lesions of the lungs characterized by broncho-pneumonia, interstitial fibrosis, and abscess of the lungs. When the chest wall becomes involved there is enlarge- ment of the affected side, effacement of the intercostal spaces, the soft tissues become discolored and cedematous, the skin becomes red in spots, and abscesses form and discharge a small amount of pus. Fungoid masses of red and yellow granulation tissue form around the openings. Actinomycosis of other organs and tissues is frequently associated with the pulmonary form of the disease Necro- sis and erosion of the ribs, vertebras or sternum;subcutaneous abscesses, and metastases to other portions of the body occur. Clinical history.—The clinical history Qf pulmonary actinomycosis maybe similar to that of pulmonary tubercu- losis, tumors of the lungs, or chronic pleurisy. The fact that actinomycotic and tuberculous processes maybe associ- ated in the lungs tends towards ambiguity of the clinical history. The onset of the disease is gradual and is accompanied by an insidious cough, with, perhaps, slight expectoration. There is general weakness with loss of weight. Pleurisy, with or without effusion, may be a feature of the early stages. The patient becomes pale and anaemic and loses flesh; cough becomes more troublesome, and the sputum becomes muco- purulent, more abundant, and may contain the yellow gran- ules which are characteristic of the disease. The tempera- ture is more or less elevated and gradually assumes a hectic type. When the chest wall becomes involved there is a change in the contour of the affected side. Scoliosis may develop The soft tissue becomes swollen and inflamed, abscesses ACTINOMYCOSIS of the lungs. 317 form and discharge pus and the sinuses are surrounded by granulation tissue. The clinical history is now much like that of caries of the ribs or vertebrae. The symptoms may resemble those of emphysema, or may simulate those of typhoid fever. The course of the disease is progressive. The average duration is about one year. Recovery is very rare. Death is preceded by general septic conditions. Symptoms and diagnosis.—Cough, fever, emaciation; with muco-purulent' or perhaps fetid expectoration are the principal symptoms. Cough and expectoration are im- portant symptoms as in some cases the diagnosis may be reached through the presence of the actinomyces in the sputum. Bizzozero cautions against mistaking degenerated epithelial cells in the sputum for the organism of the dis- ease. The fever is irregular in type and eventually be- comes hectic. The physical signs are usually indefinite. The lower portion of the lungs is the part usually affected, and the disease is generally confined to one side of the chest. More or less localized dullness will be present and there will be a corresponding loss of respiratory sounds. Signs characteristic of pleural effusion may be present. There may be signs of a cavity in the lung. As the disease pro- gresses and the chest walls become affected there will be much restriction of motion and the voice and respiratory sounds will be weak and indefinite. In the early stages it may be impossible to differentiate the disease from tuberculosis, or from chronic pleurisy. The presence of actinomyces in the sputum, or in the dis- charge from the chest wall may be the only means of mak- ing a positive diagnosis. If the disease has extended from the liver the latter will be enlarged. Extension from the upper respiratory tract, or from the mouth may render the diagnosis less difficult than usual. Godlee says that if, on opening an abscess connected with the ribs, pleural cavity, or spine, the amount of pus is small and haemorrhage unusually free, and especially if subsequent insidious burrowing of pus beneath the skin oc- curs, we should be suspicious of actinomycosis. 318 MYCOSIS PULMONUM. Treatment—The medicinal treatment of actinomycosis of the lungs is symptomatic only. Large doses of iodide of potash (20 to 40 grains t. i. d.) are recommended but it is doubtful if it does any real good. Injections of iodide of potash have also been recommended. Surgical measures are the only means that may avail against the inevitably fatal results, and on this account much greater risk may be assumed than is justifiable in other pulmonary diseases. We must bear in mind the great danger of haemorrhage during operation, and also the possibility that the disease has extended to places and tissues where surgical intervention cannot follow'. MYCOSIS PULMONUM. Pulmonary mycosis (pneumonomycosis) is a disease of the lungs caused by the presence of fungi. The disease may be primary or secondary (fungus growth in the cavities of phthisical lungs.) Virchow first recognized the disease in 1*54. The principal form of the disease is that due to the aspergillus fumigatus. Other forms may be due to sarcinae (p. sarcinica), to an oidium said to be allied to the yeast fungus*, to an organism called by Flexner the streptothrix pseudo- tuberculosaf, and, according to some observers, to some of the mucosinae or moulds. Rixford and Gilchrist have reported cases of protozoic infection of the lungs. \ These various infections of the lungs are followed by changes in the lung tissue which are very similar to those occurring with tuberculosis. The symptoms and clinical history are those of chronic lung disease and may closely simulate those ©f tuberculosis, chronic bronchitis, asthma haemoptysis, etc. The diagnosis depends on the demon- stration of the nature of the infection. *Gilchrist and Stokes—Bui. Johns Hopkins Hospital vol. vii, No. 64: July 1896. tPseudo-tuberculosis hominis stroptothrica,—Flexner, Johns Hopkins Hospital Bui: June 1897. jProtozoan or coccidioidal pseudo-tuberculosis. Johns Hopkins Hospital Rep. 896,1, 209.i v v HYDATIDS OF THE LUNGS. 319 Renon and Dieulafoy hold that the aspergillus fumiga- tus may be a pathogenic organism, though in some cases it is secondary. Virchow and others maintain that it is al- ways saprophytic, and the lesions are secondary to other processes. Secondary aspergillo-mycosis may occur in connection with pulmonary tuberculosis, chronic bronchitis, bron- chiectasis, haemorrhagic infarction of the lungs, malignant growths in the lungs, and to valvular lesions of the heart. HYDATIDS OF THE LUNGS. Hydatids of the lungs (echinococcus of the lungs) is due to the presence in the lungs of the larvae of the taenia echinococcus. The disease is most common in Iceland Australia, and some European countries where there is close association between men and dogs. It is rare on this conti- nent, though Ferguson states that a number of cases have been observed in Winnipeg since the Icelandic immigration in 1844. ^Etiology.-—The cestode of the taenia echinococcus is four or five mm, long and consists of three or four seg- ments. The terminal segment is mature and may contain 5,000 eggs. The head is small and has four sucking disks sur- rounded by a double row of hooklets. The ova are acci- dentally ingested by man, chiefly through the medium of the drinking water. The ovum having reached the stomach is relieved of its envelope by digestion and the embryo makes its way through the coats of the stomach or intestines and may reach the lungs, after passing through the capillaries of the portal or hepatic veins, by way of the pulmonary artery, or, it may enter a systemic vein after leaving the stomach, and thence gain the pulmonary artery. Accord- ing to Bird, hydatid disease of the lung may occur through inhaling dust containing the ova of the echinococcus. in which case they might enter the bronchial arteries. It is not definitely known, however, how much of their move ment is to be attributed to migration and how much to vas- cular transportation. 320 HYDATIDS OF THE LUNGS. Echinococci are more frequent in the lung than in the pleura, but the liver is the favorite seat of the affection. In this country about seven per cent, of the cases have oc- curred in the lungs or pleurae. In 1,862 cases collected by several observers the lungs and pleurae were affected in 153 cases, Thomas' collection of 809 cases show the lungs to have been affected in 134 cases, and the pleurae in 2 cases. Morbid anatomy.—When the embryo has reached its destination its hooklets disappear and it is gradually changed into a small cyst containing a clear fluid. The wall of the cyst is composed of an external thick, transparent, elastic, laminated layer (ectocyst); and an internal granular, parenchymatous layer (endocyst). This cyst determines more or less formative inflammation in the surrounding tissue, and becomes enveloped in a fibrous capsule. This capsule is rarely as dense as it is in hydatids of the liver, and frequently it is slight or absent altogether. The method of development of the cysts is the same as in other tissues and need not be considered here. The fluid contained in the cysts is clear and limpid and has a specific gravity of 1.005 to 1.015. It contains no albumen, or at most only a trace. There may be traces of sugar. Usually the cysts contain scolices and the characteristic hooklets. As the cysts grow they compress the lung tissue; cause inflammation of the surrounding tissue, gangrene, and the formation of cavities which may be connected with the bronchi. The bronchi may be patent directly to the sur- face of the cyst, but as long as the latter is tense with fluid the bronchi will not open directly into the cyst. If the cyst collapses the bronchi open and the air enters the cyst cavity. Rupture into a bronchus may occur with discharge of the cyst contents, or even of the cyst itself, in which case the cavity may become obliterated. This result is rare, however, for, if the cyst is surrounded by a fibrous wall the cavity continues to discharge pus. Rupture into the pleura is followed by pneumothorax, and pleurisy with serous or purulent effusion. Rupture into the pericardium is usually rapidly fatal. HYDATIDS OF THE LUNGS. 321 The lung tissue surrounding a cyst may become pneu- monic, gangrenous (if the cyst is dead), or fibrotic. These changes may lead to the death of the cyst which may in time be followed by suppuration and decomposition of its contents. It thus becomes an abscess which may discharge in any direction. If the cyst dies, its contents become tur- bid and albuminous. The adult cyst may become glutinous, opaque and m ay break up into fragments. If there are daughter cysts, they will later pursue the same course. In rare in- stances the cyst contents may undergo fatty degeneration and the cyst dries up. Hydatid cysts of the lung are usually single. The multilocular variety is very rare. Both lungs may be in- volved, and there may be more than one cyst in a lung. The right lung is more often affected than the left; and the lower lobes more frequently than the upper. Very few cases of hydatids of the lungs recover. Clinical history.—Small cysts in the lung may give very indefinite symptoms, or none at all. There may be a history resembling that of tuberculosis. Usually there is a dry, hacking, paroxysmal cough with some mucoid expec- toration. Slight haemoptysis is quite common in the early stages; later on it may be profuse. Fever is generally ab sent unless inflammation is present in the lung, Moderate dyspnoea may be present, but the dyspnoea is not trouble- some unless pressure is exerted on large vessels. Pain is slight or absent unless the pleura is involved. There may be a sense of weight or constriction about the chest. Loss of flesh and weight is common. Rupture of a cyst into a bronchus is attended with severe, sudden pain in the chest, violent cough, marked dyspnoea, the expectora- tion of watery fluid which contains the characteristic hook- lets, and possibly by severe haemorrhage. Small pieces of hydatid membrane may be present in the expectorated fluid. If the bronchus opening into the cyst is small the escape of the contents of the cavity may be gradual and accompanied by less severe symptoms. If daughter cysts are present in the expectorated fluid the bronchus entering the cavity is probably a large one. Haemorrhage may occur at intervals 322 HYDATIDS OF THE LUNGS. after the rupture. Death may occur at the time of rupture of the cyst. If communication be established with the pleu- ral cavity the signs of pneumothorax and pleurisy will follow. After rupture of the cyst the violent, severe and par- oxysmal coughing spells may continue, the expectorated matter containing fragments of membrane and daughter cysts. The expectoration may become purulent and fetid, or it may be dark-colored and resemble pus from an hepatic abscess, while the clinical history may be similar to that of gangrene of the lungs. Hectic fever, loss of flesh, and club bing of the finger ends may occur. In some cases the symp- tom s are much less severe, and aside from the dyspnoea which may attend the expectoration of cysts or fragments of cyst wall the history may not be distinctive. Symptoms and diagnosis.—A small, deeply-seated cyst may give no symptoms. If a large cyst exists there may be diminished chest expansion and respiratory mur- mur. If the cyst is near the surface there will be loss of expansion, diminished voice and respiratory sounds, slightly tympanitic or a flat percussion note, and diminished or absent vocal fremitus. The cardiac impulse may be displaced and the chest wall may show local prominence andeffacement of the intercostal spaces, or the cyst may project through a space and form a round tumor on the chest wall. According to Fowler, the most characteristic sign is a round area of dullness on percussion showing absolute dullness in the cen- ter with gradually increasing resonance toward the margin; the breath sounds and vocal resonance being absent over this area. If the cyst is near the chest wall the so-called hydatid thrill may be felt. Sub-crepitant rales from cedema and congestion of lung tissue may be heard. Signs of pressure on the vessels, pneumogastric nerves, or on the oesophagus may be present. The differentiation from tuberculosis rests on the location of the lesion, its failure to involve other portions of the lungs, by the absence of bacilli and by the greater effect of tuberculosis on the general health. Signs of a cavity may be obtained soon after rupture TUMORS OF THE LUNGS. 323 and before contraction has occurred. If the cavity is active- ly secreting, the diagnosis may be difficult if the expectora- tion contains nothing characteristic, and the signs may re- semble those of tuberculosis, abscess, or gangrene of the lungs. Sudden and severe pain and dyspnoea with signs of air and fluid in the pleural cavity characterize rupture into that cavity. Rupture into the pericardial sac may be immediate- ly fatal. If not, there will be increased praecordial dullness with diminished or absent cardiac impulse. A cyst of the liver projecting into the lung may rupture into a bronchus, in which case the expectoration will be stained with bile. When cysts of the right lobe of the liver project upward it may be difficult to determine whether the cyst is above or below the diaphragm. Pressure effects on the structures within the chest are not so common with hydatid cysts as with other forms of tumors. If fluctuation is present and pleural effusion can be excluded, the fluctuation is most likely due to an hydatid cyst. Treatment.—The medical treatment of hydatids of the lungs is symptomatic only. Surgical measures alone can hope to effect a cure. While paracentesis has resulted in a cure in a few instances, it is regarded by most observers as a dangerous procedure, as the fluid may escape into the bronchi and cause a fatal result. The same surgical course should be pursued as in dealing with a pulmonary abscess or other lung cavity. The question of whether to simply drain the cavity, or to remove also the ectocyst, is one which must be decided by the conditions of the tissues and the sur- geon's experience. TUMORS OF THE LUNGS. Tumors of the lungs may be primary or secondary. Primary growths are rare in the lungs. Secondary growths are more common. [In 112 cases of tumors of the lungs the disease was primary in 38, and secondary in 64.—Wilson Fox.] The primary growths are usually epithelioma, en cephaloid, or scirrhus, the first named being the most com- mon. Sarcoma may occasionally be found in the lungs as a 324 TUMORS OF THE LUNGS. primary growth, and enchondroma very rarely occurs as such. Primary cancerous growths may originate in the glands of the bronchi, or in the alveolar epithelium. They may spread along the lymph channels. Sarcomata are most often secondary though they may be primary. The most frequent variety is the round-cell form, though spindle-celled, myeloid, melanotic, and osteo- sarcomatous forms are also met with. The secondary growths may be encephaloid, scirrhus, epithelioma, colloid, enchondroma, melano-sarcoma, or osteoma. Enchondroma may occur in the bronchial carti- lages. ^Etiology.—Tumor of the lungs is most common be- tween the fortieth and sixtieth years of life. The primary form affects the sexes equally (Walshe). The secondary form is most common in women. It is not clear that the fact pointed out by Williams that in cancerous disease gen- erally there is a family history of tuberculosis rather than one of malignant disease, will apply to primary malignant disease of the lungs. It is claimed that a large proportion of the deaths of persons over forty years of age who are employed in the cobalt mines of Schneeberg, is due to ma- lignant disease of the lungs. The secondary growths usually follow disease of the genito-urinary system, digestive tract, or of the bones. Morbid anatomy.—Primary carcinoma and sarcoma usually occur in but one lung and may form large masses involving the greater portion of the lung. Secondary growths are usually distributed through both lungs though they may be localized and involve chiefly the pleura. Met- astatic growths are usually disseminated and may involve arge portions of the lungs. Primary growths when limited to a single lung generally affect the right lung. Secondary multiple growths usually affect both lungs alike. Primary growths may occur as well-defined tumors or as infiltrations, the latter being most common. All traces of lung tissue may be destroyed. The growth may extend into the lung tissue along the perivascular and peribronchial lymph spaces. Cancerous growths may be soft and fleshy TUMORS OF THE LUNGS. 325 in appearance, or may be hard, solid, white masses. The site of the bronchial glands may be marked by pigmentation. Sarcomata may form masses an inch or two in diameter, or there may be numerous nodules scattered through the lung tissue. They are well-defined, soft, and have a fleshy appearance. The sub-pleural and pulmonary lymphatics are usually infiltrated. Secondary growths usually form small, multiple, dis- seminated nodules in both lungs. They may resemble tu- bercles. Large, single masses may be present. With widely disseminated growths or with dense infil- trations the lungs may be enlarged, though some retraction may at times be present. Softening, excoriation, and pus coliections may occur. Cancerous, sero-fibrinous,or haemor- rhagic pleurisy may be an associated lesion. The mediasti- nal and bronchial glands are usually affected, less frequently the cervical glands are involved, and rarely the inguinal glands are enlarged. Clinical history.—The clinical history of tumors of the lungs may be very indefinite, especially with primary growths. There may be no symptoms of a lesion in the chest (Walshe). Pain may be an important symptom if the pleura is involved. Dyspnoea may be troublesome and may be paroxysmal if there is pressure on the trachea. Dry, painful cough, mucoid expectoration may be present, Stokes has called attention to "prune-juice" expectoration in some cases of primary cancer of the lung, Passive congestion of the face and of one or both upper extremities may occur from pressure, The pneumogastric or recurrent laryngeal nerves may show pressure effects. If the mediastinum is not involved the pressure effects will be absent. The rapid dissemination of the lung lesions may be attended with pneumonic symptoms and albuminuria (Wunderlich), Emaci- ation may or may not be considerable. The duration of the disease is from six to eight months. It may run a very acute course, Jaccoud observed a case which lasted only a week from the onset of the symptoms. Symptoms and diagnosis.—Primary growths not in- volving the mediastinum are so rare, and, pressure effects 326 TUMORS OF THE LUNGS. being absent, their symptoms so indefinite, that they are often not recognized when present. When an intrapulmo- nary growth is large there may be some bulging of the side, though retraction may be present from extensive infiltra- tion or from collapse due to bronchial obstruction. The heart may be displaced. Vocal fremitus may be normal, increased, or absent. Pulsation may occur from transmitted heart's action. The percussion note may present any quali- ty from normality to absolute dullness. Extension of dull- ness beyond the median line is as important, but of less common occurrence, as in mediastinal tumors. The breath- sounds are usually diminished in intensity. Bronchial breathing may be present. The diagnosis is not difficult in secondary growths, as the history of the patient will be suggestive. Progressive emaciation, involvement of the cervical glands, especially the clavicular, dark-colored expectoration, and anomalous physical signs will suggest the nature of the trouble. Treatment.—The treatment of tumors of the lung is symptomatic. In special cases it is possible that surgical measures might be considered with advantage. CHAPTER XV. PLEURISY. Inflammation of the pleura may be primary or second ary, As to its cause it may be acute or chronic. From an anatomical point pleurisy may be divided into dry pleurisy, fibrinous, plastic or adhesive pleurisy, and pleurisy with effusion. According to the character of the effusion pleurisy is spoken of as serous, sero-fibrinous, sero-purulent, puru- lent (empyema), haemorrhagic, and putrid. The terms trau- matic, diaphragmatic or phrenic, cancerous, tubercular etc., are sometimes used to indicate special features of individual cases. Attempts have been made to classify pleurisy from a bacteriological standpoint, and there has been described a pneumococcus pleurisy, a streptococcus pleurisy, a sapro- genic pleurisy, a staphylococcus pleurisy, a tubercular pleurisy, and pleurisy due to such organisms as the typhoid bacillus, the influenza bacillus etc. While in many instances of tubercular and of pneumo- coccus infection of the pleura a characteristic inflammation results which can be defined clinically, in the majority of cases the part played by the various infections cannot, as yet, be outlined clinically with sufficient clearness to make such a classification of practical utility. Regarding the disease purely from a clinical standpoint the simplest classi- fication is one under which may be included the greatest number of cases without the subdivision which is necessary when we attempt an aetiological classification. Dividing pleurisy, then, into fibrinous or plastic pleurisy, sero- fibrinous pleurisy, and purulent pleurisy, we have a classi- fication embracing the clinical features of the majority of cases and which is more definite than the simple division into acute and chronic pleurisy, and which is less elaborate and confusing than a classification based on the numerous aetiological factors of inflammations of the pleura. 328 FIBRINOUS PLEURISY. Fibrinous (plastic, adhesive) pleurisy may be primary or secondary, acute or chronic (prifiiative dry pleursy). It may occur in any degree from the slight inflammation with little or no exudation (dry pleurisy), to extensive plastic exudations resulting in considerable induration of the pleurae. It is probable that the pleuritic adhesions so fre- quently found post mortem in subjects in whom there has been no history of pleural disease are the result of the milder degrees of fibrinous pleurisy. ^Etiology.—Primary, fibrinous pleurisy may occur as an independent affection, in persons of good health, from exposure to cold. It is not clearly understood just how the disease is thus brought about, though we have bacteriologi- cal evidence of the loss of resistance in tissues after exposure to cold, and we know that individual resistance in this repect varies greatly. It is not improbable that a clearer appreciation of the practical workings of pneumo-dynamics might explain some of this class of cases. All constitutional conditions which lower the vitality of the individual may predispose toward plastic inflammation of the pleura. Some cases of primary, plastic pleurisy are undoubtedly tubercular in origin. The exact proportion is difficult to estimate. In general serous-membrane tuberculosis the pleura may be involved simultaneously with the peritoneum. In tubercular pleurisy the visceral pleura is infected through the sub-pleural lymphatics or from the bronchial or tracheal lymph glands. The parietal pleura may be infected from the cervical, vertebral, or mediastinal lymph glands, or through the diaphragm from the lymphatics of the peritoneum. The frequent impossibility of demonstrat- ing the tubercular nature of the adhesions which are often present in cases of pulmonary tuberculosis shows the difficulty of recognizing the tubercular nature of a primary pleurisy. While the adhesions which are associated with pulmonary tuberculosis may be due, in some instances, to associated infections, it is altogether likely that in the great majority of cases they are tubercular in origin. This latter is more readily demonstrated, according to Fowler, by ex- FIBRINOUS PLEURISY. 329 amination of the pleural surfaces of the interlobar fissures where the tubercular granulations are most distinct. Secondary, fibrinous pleurisy occurs in connection with acute diseases of the lungs such as pneumonia, tuberculosis, cancer, abscess, gangrene; to inflammations of the pericar- dium and mediastinum. Bright's disease, and acute rheu- matism may precede this form of pleurisy. Fractures of the ribs,' injuries of the chest walls, gun-shot and other perforating wounds of the pleura may cause plastic pleurisy when the injury is not septic in character. Morbid anatomy.—In fibrinous pleurisy there is a fibrinous exudate upon the pleural surface. Leucocytes and blood corpuscles are enclosed in the muscles of this exuda- tion. Preceding the appearance of this fibrinous exudate there is injection of the subserous vessels, loss of lustre of the membrane, proliferation of the nuclei of the endothe- lial cells of the pleura, and blocking of the stomata of the membrane and-of the adjacent lymphatics with fibrin and corpuscles. The layer of coagulable lymph varies in thick- ness with the amount of cellular elements and fibrin poured out. The layers of lymph nearest the pleural membrane may be dense and laminated; superficially the lymph is trabeculated with a fine net work of fibrin enclosing corpus- cles. If the inflammatory process ceases at this point (dry pleurisy) the exudation may become vascularised and form connective tissue with more or less union of the sur- faces of the pleura. The exudation may become absorbed without the formation of adhesions, and some thickening and opacity of the pleura may be the only result of its presence. Thickening of the interlobular septa is a frequent result. In chronic tubercular pleurisies of this type the layers of ex- udation may be very thick and laminated and may be gran- ular in appearance from prolonged friction of the surfaces of the pleura. In tubercular pleurisy particularly, the pleural membrane lining the interlobar fissures is fre- quently much thickened and closely adherent. In the chronic forms of fibrinous pleurisy great induration of the visceral pleura may result, and the adjacent interlobular lung tissue may be involved. In fibrinous pleurisy the 330 fibrinous pleurisy visceral pleura is much more frequently involved than the parietal pleura owing to the frequency of the occurrence of pleurisy secondarily to inflammations of the lung. The lower portion of the pleura is much more frequently affected than the upper especially in tuberculous cases, though in apical tuberculosis of the lung the pleura is affected more often than has been supposed. In some cases the inflamma- tion is limited to the diaphragmatic pleura (diaphragmatic pleurisy), and though any variety of pleurisy may be limited to the diaphragmatic pleura, such an inflammation is usually of a fibrinous nature. Clinical history.—The clinical history of acute plas- tic pleurisy is usually distinctive. Pain in the side is the earliest and most prominent symptom. Preceding or accom- panying the onset of the pain there may or may not have been chilliness or a chill. If the latter occurs it is usually of a nervous character. The pain is sharp and piercing, and usually begins very suddenly at about the middle of inspira- tion and ceases with the beginning of expiration. In some cases, especially in the apical pleurisies accompanying pneumonia of the same region in children, the pain may be more or less continuous. Dry, hacking cough is present. It is apt to be constant and causes considerable pain. Dyspnoea, if present, is ir- regular and results largely from fear of pain. The temper- ature is usually elevated two or three degrees. The pulse is rapid (from 100-120) quick, small and irregular in force. In some cases of limited inflammation there may be no history except that of slight cough, slight pain on deep inspiration, and a slight febrile rise. In pleurisy secondary to other dis- eases of the chest the occurrence of the above symptoms will be readily understood though they be masked by the symptoms of the original disease. The majority of cases of fibrinous pleurisy which are observed in this stage are not followed by effusion: the symptoms subside within two weeks and the patient is apparently as well as ever. If the inflam- mation has been extensive, recovery may be slow and there may be more or less thickening of the pleura with perma- nent loss of expansion of the affected side. In some of these FIBRINOUS PLEURISY. 331 cases of acute plastic pleurisy, liquid effusion will result, or rather the plastic exudation and the sero-fibrinous effusion are practically simultaneous in their appearance, as in the following case. Man aged thirty-five years. Three days ago developed a sharp pain in right side. Pain has continued ever since and is still severe when he coughs or breathes deeply. Temperature 101°; pulse 100. Examination shows loss of motion of lower right side. Heart apex displaced one inch to the left. Fremitus absent below sixth rib on right side. Partial dullness on right side between fifth and sixth interspaces; flatness below sixth rib. Well marked friction sound from fifth to seventh ribs on right side. Explora- tory puncture in seventh interspace obtains fluid of a turbid character containing flakes of lymph. In this case the plastic exudate was considerable, and the liquid effusion moderate in amount, as sufficient time had not elapsed, in all probability, for the effusion to reach its extent. The friction sound, which is usually absent when sufficient fluid is present to be readily recognized, was therefore well marked. Primary, plastic pleurisy may result in great thicken- ing of the pleural membranes and result in cirrhotic pro- cesses in the lungs (Sir Andrew Clark). This condition is clinically identical with like conditions which result from chronic empyema, long standing encysted serous effusions, or primary pulmonary cirrhosis, and its occurrence as a pathological or clinical entity has been denied. In primary, plastic pleurisy of tubercular origin there may be great thickening of both pleural layers, eventually much retraction of the side, and a history of "stitch in the side," moderate cough, slight fever, gradual loss of strength, etc., extending over a period of a year or two. The following case was of this nature: Young woman twenty-two years old. Sick eleven months, previous health good. Family history good except as to an aunt wiio died of phthisis. About a year ago patient began to have pain in the left side extending from the nipple line around to the point of the scapula. This was followed by slight cough, gradual loss of flesh, and for the last two months, amenorrhoea. Her temperature was 99.8°; pulse 100. The left side shows slight retraction 332 FIBRINOUS PLEURISY. below the level of the fifth rib, considerable loss of ex- pansion over same area with inspiratory recession of the interspaces. Deep inspiration causes pain and cough. Fremitus, pitch of voice and inspiratory sounds, pitch of percussion note all markedly increased over this area. Very little air enters the lo'ver portion of the left lung. No bacilli could be found in the sputum until within the last two months. During this period, however, there have been signs of consolidation and catarrh of the left apex. Symptoms and diagnosis.—The pain of acute, plastic pleurisy is severe and lancinating. It usually catches the patient suddenly at about the middle of the inspiratory act. It is ordinarily felt in the axillary region or just below che nipple at the level ofthe fourth or fifth inter- space. In secondary, apical pleurisy the pain is felt at the top of the shoulder and beneath the upper portion of the scapula In diaphragmatic pleurisy the pain may be felt lower down in the back or in the abdomen and pres- sure over the diaphragmatic insertion at the tenth rib increases the pain. The pain of pleurisy is increased by deep breathing and by coughing. The patient adjusts his position so as to limit the motion of the affected side, usually by flexing his body, leaning toward the affected side, and clasping the ribs by one or both hands when he coughs. His face has an anxious, pained expression. There is moderate elevation of temperature and a quick- ened pulse, The cough is spasmodic, hacking, and painful. Expectoration is scanty or absent. The respiration is jerky, and the motion of the affected side is diminished in acute cases largely from fear of pain though in chronic cases there may be much loss of ex- pansion, and even retraction of the chest wall, from thick- ness and induration of the pleural and sub-pleural tissues- The fremitus is unchanged in acute cases. In chronic cases it may be increased over the lower portion of the chest wall. The percussion note is usually not perceptibly altered unless there has been considerable plastic exudate when it may be slightly dull. On auscultation we obtain the only definite sign of this FIBRINOUS PLEURISY. 333 variety of pleurisy i. e., the friction sound. Pleural friction sounds may be grazing, rubbing, or grating in character. They are heard about the middle of the inspiratory act and cease before the inspiration is completed. The grazing or fine crepitating sounds are obtained m the earliest stage before much exudation is present. They may last but a short time. They may closely resemble the crepitating rale of pneumonia but occur earlier in the inspiratory act and are distributed over a longer period of time than the latter. The sounds are also not so distinctly individual as are the numerous, bunched crepitations of pneumonia. If there is moderate plastic exudate the sounds become rubbing or grating in character. If considerable exudation occurs the friction sound disappears. If there is fluid effusion the sounds may disappear early if the effusion is abundant and they may reappear when the fluid is absorbed in which event they will be dry and rubbing in character (reduction rales). With considerable plastic exudate and liquid effusion of moderate amount the friction sounds may remain throughout the course of the disease. If the exuda- tion is entirely plastic the friction sounds gradually become rubbing in character and more dry in quality and disappear within a week or two. The voice sounds and respiratory murmur are usually diminished except in chronic cases with thickened pleura and adhesions. They will then be raised in pitch but diminished in volume. Loss of expansion, inspiratory re- cession of intercostal spaces, increased tactile fremitus, diminution in volume and increase in pitch of the vocal and respiratory sounds may indicate pleural adhesions, but, as these symptoms may be present without adhesions, the lat- ter can only be diagnosed provisionally, seldom posi- tively. In diaphragmatic pleurisy the respiration is usually short, and is thoracic in type. The motion of the diaphragm is limited. Severe dyspnoea may be present with attacks resembling angina (Andral). Objectively it is difficult to explain the severity of the subjective symptoms of dia- phragmatic pleurisy. 334 FIBRINOUS PLEURISY. The diagnosis of acute plastic pleurisy is usually not difficult. In interlobar pleurisy if there are encysted col- lections of fluid the diagnosis may be difficult. In some in- stances the onset of plastic pleurisy may resemble that of pneumonia to a marked degree with the exception of the re- lation of the pulse and respiration rate which is less dis- tinctive than in pneumonia. The following case illustrates this type of the onset of pleurisy: Man aged 45, large and fleshy. Previous health good. Was taken ill suddenly with a chill followed by fever and pain in the side, cough, slight expectoration, and dyspnoea. Temperature 102.8°, pulse 100, respiration 32. On examina- tion there were bronchial rales in the left lung; no consoli- dation. Over the lower portion of the left pleura, anteriorly, then was a very rough, grating friction sound. In twenty- four hours the temperature came down to^ 100.5° and the cough and dyspnoea were relieved. The frction sound be- came less rough and disappeared in five or six days. The pain of myalgia or of intercostal neuralgia may simulate that of pleurisy but the tender spots may be definitely outlined and friction sounds are absent. The chronic types of fibrinous pleurisy may, especially when tubercular in nature, furnish the signs of encysted collec- tions of fluid, and the only definite means of differentiation may be the use of the exploring needle. Treatment.—The treatment of fibrinous pleurisy is largely symptomatic. For the pain the most efficient rem- edy is one-fourth of a grain of morphia hypodermically. In diaphragmatic pleurisy morphia is generally a necessity. Next to morphine the quickest relief is afforded by a good- sized fly blister. When these means are ojectionable, es- pecially in children, the hot poultice, mustard plaster, or hot applications are very useful. Blisters, while relieving pain, seem, also, to have some modifying action on the in- tensity of the inflammatory process, and their application is, therefore, good treatment in cases of active inflamma- tion. A single blister, 4x5 or 5x6, is better than several, or a succession of, small ones. Leeches, cupping, cauterization, etc.. are troublesome and inefficient methods compared with SERO-FIBRINOUS PLEURISY. 335 the above treatment. Leeches are better than cupping for the relief of pain. Fixing the side by means of long strips of adhesive plaster passing over the median line and drawn tightly is highly recommended by Roberts and others. It certainly gives much relief. The ice bag is recommended, but does not seem to be of much service. The fever and cough should be treated symptomatically. The bowels should be managed by a little calomel followed by a saline. The use of large doses of salicylate of soda has been recommended for the limitation of the inflammation and the prevention of liquid effusion, but they do not seem to have such effects and are apparently useless. Iron, quinine and strychnine are very useful in overcoming the depression which follows the attack. SERO-FIBRINOUS PLEURISY. Sero-fibrinous effusion occurs in pleural inflammation of a somewhat more severe character than that in which fibrinous exudation alone occurs. This form of pleurisy occurs at any time of life, though most common in adults. Men are more frequently affected than women. ^Etiology.—All the causes of acute plastic pleurisy are factors in the production of the sero-fibrinous variety, as more or less plastic exudation precedes or accompanies sero- fibrinous effusions. Rheumatism, Bright's disease, inflam- mations of the lungs, pericardium, or mediastinum may be accompanied by sero-fibrinous pleurisy. A large proportion of the cases of this variety of pleurisy belong to the so-called idiopathic pleurisies. Bacteriological research has shown that most of these cases are due to certain organisms. The bacillus tuberculosis is the organism most frequently caus- ng seto-fibrinous pleurisy, while in some few instances the pneumococcus appears to be the causative agent. Cover- slip preparations, cultures and ordinary inoculation tests may fail to show the tubercle bacillus as they are often very few in number. Eichorst found that by injecting 15 cc. of fluid exudate into test animals 62 per cent, of the cases were shown to be tuberculous. Le Damany, by injecting large quantities of fluid, demonstrated all but four of fifty-five 336 SERO-FIBRINOUS PLEURISY. cases to be tuberculous. Bowditch traced the history of ninety cases occurring between 1849 and 1879, and found that thirty had died of tuberculosis. Of 101 cases of fibrinous, sero-fibrinous, haemorrhagic and purulent pleurisy, Osier found thirty-two cases to be definitely tubercular. From the statements of French authors it would appear that from 70 to 75 per cent, of the cases of acute pleurisy are tubercu- lous. Observations of series of cases by Kelsch and Vallard, Lemoine, Netter, Chaufford and Gombault, Thue, Fiedler, Barrs, Richochon and others have shown, either through inoculation experiments or through the subsequent history of the cases, that from one-third to one-half of the cases were tubercular. Staphylococci, streptococci, pneumococci Eberth's typhoid bacillus, and other micrococci have been found in the effusion of pleurisy by Thue, Fernet, Sidney Martin and others. The clinical fact that pleurisy often will rapidly follow a sudden exposure, wetting, or chill is not denied by those who are the strongest advocates of the growing belief that these cases are, as S£e expresses it, ' 'tubercular pleurisy, the nature of which has been misunderstood." We cannot, at present ascribe all sero-fibrinous pleurisies to microbic infection, but as far as their tubercular nature is concerned, the following may be accepted: That a considerable pro- portion of the cases which come on suddenly in healthy people are of a tuberculous nature; that a somewhat larger proportion of the sub-acute or insidiously appearing cases in persons whose present health is not of the best are tu- berculous in nature; and that sero-fibrinous pleurisy second- ary to chronic diseases are also frequently tubercular in origin. The difficulty of proving the tubercular nature of some cases, which eventually exhibit their tubercular nature by examination of the fluid or by inoculation experiments, causes the subsequent history of these cases to be of special interest. The fact that many cases recover and never ex- hibit any evidence of tuberculosis is rather an argument in favor of the curability of this variety of tuberculosis of the pleural, serous membrane than an indication of its non-tu- SERO-FIBRINOUS PLEURISY. 337 bercular nature. Yet it is difficult to exclude the doubtful element of subsequent infection in those cases where con- siderable time has intervened between the recovery from the pleural inflammation and the appearance of recognizable tuberculosis. We must know something of the liability to subsequent infection, the character of the morbid process, and the nature of its onset in the inlividual cases before we can estimate the value of statistics bearing on the fact of the subsequent development of tuberculosis in persons with a previous history of pleural inflammation. It is a perfectly safe clinical rule to regard persons who have had sero-fibrinous pleural effusions, especially when such effusions come on insidiously without evident cause in persons of an indifferent state of health, as candidates for tuberculosis, and to frame our advice and medication on that basis. Sero-fibrinous effusions may occur after pneumonia though such occurrence is rare, metapneumonic pleurisy being usually purulent. Sero-fibrinous effusions may occur in the free pleural cavity adjacent to encysted purulent effusions. Morbid anatomy.—In sero-fibrinous pleurisy the pro- portion of serum and fibrin varies greatly. The fibrin will be found on the surfaces of the pleura or may be float- ing as floculi in the liquid effusion. It may be very scanty in amount or may form thick layers or masses. It may de- posit as thick, curdy masses or layers at the most dependent portion of the pleural cavity. The liquid effusion may be clear, or slightly turbid; lemon-yellow, greenish, dark brown or red (haemorrhagic pleurisy) in color. The usual color is light yellow with a greenish tinge. The fluid is alkaline in reaction and has a specific gravity of from 1.005 to 1.030 (Fraentzel). It contains leucocytes, large cells probably derived from the pleural endothelium, red blood corpuscles, and shreds of fibrin. If the corpuscular elements are few, the fluid is clear and translucent; if they are numerous, the fluid is opalescent or turbid. Urea, uric acid, sugar, choles- terine, leucine, ty rosin and xanthoxine may also be found in the fluid. The fluid is albuminous, the amount of albu- rJ,">S SERC-FIBRINOUS PLEURISY. men varying from 31 to 77 per cent. (Walsh). After with- drawal of the fluid it may coagulate spontaneously. Haem- orrhagic effusion is rare. It may occur in connection with cancer, tuberculosis, Bright's disease, cirrhosis of the liver, with malignant types of specific fevers, or independently of any of these affectior s. The quantity of fluid present varies from a few ounces to several pints. The fluid may be locu- lated or encysted in small sacs by means of masses of lymph or by adhesions. These small collections of fluid usually occur in the lower portions of the pleural cavity, but may occur in any part. One sac,or portion of the pleural cavity, may contain serous effusion, and at the same time another portion of the pleural cavity may be occupied by a purulent collection of fluid. The displacement of the organs within the chest which results from effusion is readily reduced upon removal of the fluid unless prevented by extensive deposi- tion of lymph or failure of the collapsed lung to expand. In large effusions the heart and mediastinum are dis- placed toward the sound side unless retained by adhesions. This occurs early and does not represent the degree of pos- itive pressure within the pleura as closely as does the dowm- wrard displacement of the diaphragm or liver. The apex of the heart may be raised and the heart may lie more trans- versely, in left-sided effusions. In effusions of the right side the heart is displaced to the left without much or any change in level. The heart does not rotate on its axis in these displacements. A large portion, or the whole, of the lung may be collapsed, airless, bloodless, grayish in color and lie close to the spine. The displacement of the heart is due in part to the loss of the usual elastic traction of the lung of the affected side and may be present in small localized collections of fluid which could not possibly exert much pressure on the heart. The collapse of the lung is likewise due in part to the loss of expansion and tractile force in the lung of the affected tide and to the elasticity of the lung tissue which causes it to retract, as the fluid accumulating in the pleural cavity alters the state of the intra-pleural tension, and as the air remaining in the alveoli is absorbed. With small effusions, SERO-FIBRINOUS PLEURISY. 339 especially localized ones occupying the lower portion of the pleural cavity, that portion of the lower lobe in contact with the effusion is usually collapsed. When these collections occur in the anterior part of the left pleura the heart may be displaced upward and inward without there being any other marked evidence of pleurisy. Thus, in a young man this displacement of the heart led to the discovery of a localized collection of fluid in the lower anterior part of the left pleural cavity, and from which the withdrawal of four ounces of fluid wras followed by a reposition of the heart to its normal situation. Clinical history.- The clinical history of sero-fibrin- ous pleurisy varies with the nature of the case. Prodro- mal symptoms may or may not be present. In some instan- ces the onset is abrupt, with chill, fever, and pain in the side,—the manifestations of acute plastic pleurisy. These are followed by a more or less rapidly accumulating fluid effusion. The fever may reach 102° or 103° at first and drop a degree or so when the effusion is established. In cases where plastic exudation and sero-flbrinous effusion are both well marked we will get pronounced subjective symptoms of the former and definite objective evidences of the latter. In many cases with considerable effusion the onset is insidious, and there is an entire absence of definite history. the patient going about his usual avocations, if they do not entail physical labor, without great difficulty, suffering only slight shortness of breath, some cough, and general weak- ness. A physician'recently presented himself, stating that he "did not feel quite right," and thought he would come in and see what was the matter. He was attending to a fairly large general practice without special difficulty except for feeling weak and having some shortness of breath when he hurried. He had a slight cough, and his temperature was 100.5W. His left pleural cavity contained over three pints of fluid. A boy sixteen years old came into the clinic having ar- rived in Chicago two days previously from Philadelphia. He complained of feeling weak during the journey and was short of breath after his arrival. His previous health had 340 SERO-FIBRINOUS pleurisy. been good. His temperature was 101°. Forty -two ounces of fluid was withdrawn from his left pleural cavity. In this class of cases the fluid may accumulate quite rapidly. An office patient complained of slight cough, general weakness, and exhibited two and a half degrees of fever. Examination of his chest determined nothing of special in- terest. He returned two days later no better. A second examination was negative as far as his pleurae were con- cerned. Two days later he returned in the same condition, and as he was a complaining aud loquacious individual he was prescribed for and dismissed without further examina- tion. The next day he consulted another physician who withdrew over three pints of fluid from his chest. In the so-called "latent" type of pleurisy, especially when tubercular in nature, there may be simply a history of slight cough, slight dyspnoea, and a low grade of fever con- tinuing for long periods. There may be slight retraction of the side. In other cases, especially of encysted tubercu- lar effusions, there may be a febrile history resembling mild remittent malarial fever, or irregular typhoid. In a recent case of this kind in a woman who had exhibited an irregu- lar fever for four or five weeks, the removal of a few7 ounces of fluid from an encysted effusion in the left pleural cavity resulted in immediate improvement. When sero-fibrinous effusions are associated with en- cysted purulent effusion the history of the latter will pre- dominate, and the diagnosis of the former will rest entirely on the physical examination. The persistence of fever and rapid pulse after thorough drainage of the empyema, may serve to direct attention to the serous effusion, as in the following case; Man aged 35. Encysted empyema in right pleural cavity. Excision of a portion of the seventh rib and drainasre. Pus cavity well contracted, small and well drained. Temperature and pulse remained high notwith- standing the good drainage. Palpation of the cavity showed it to be completely walled off from the remainder of the pleural cavity by dense adhesions Examination of the upper portion of the right chest showed evidences of fluid above the fifth interspace—the upper boundary of the wall SEROFIBRINOUS pleurisy. 341 of adhesions surrounding the drained cavity. Puncture in the third interspace obtained sero-fibrinous fluid, about a pint of which was withdrawn. The temperature and pulse improved but the patient died from general sepsis. The course of sero-fibrinous pleurisy is variable. In acute cases the fever may disappear in a week and slight or moderate effusions may be absorbed. In others the effusion gradually increases, the pain and fever continuing for from twelve to sixteen days when improvement will begin. In the sub-acute cases when the effusion reaches as high as the third rib recovery will be slowr. These cases may have lasted two or three weeks before coming under observation, and while the natural tendency is toward absorption this may not take place until a portion of the fluid is removed by aspiration or otherwise. Absorption is then slow and is followed by rough friction crepitus when the pleural sur- faces come in contact. As a rule there is loss of resonance, and feeble breathing over the base of the lung for a consid- erable period. A sero-fibrinous effusion may last for months without change, particularly in encysted tubercular pleurisy. Loculated effusions consisting of a pint or so of fluid are more apt to recur than are small effusions of from four to eight ounces. Large free effusions are not so apt to re-accumulate though they do so in a small proportion of cases. In some cases effusions will recur repeatedly in spite of aspiration and all other treatment. Cases of perforation and discharge of the effusion though the lung or chest wall have been reported (Sahli, Harris). Sero-fibrinous effusion, when not treated, may gradually increase for one or two weeks. There is then a stationary period lasting a fewT days which is followed by gradual absorption. Some cases of large effusions may disappear rapidly, and, again, they may last for months without a change. Spontaneous absorption rarely takes place during the period of marked fever, though this may occur in tuber- culous cases. The moderate temperature of sub-acute cases usually disappears soon after aspiration. In acute cases the fever is slower to disappear after aspiration. 342 SERO-FIBRINOUS PLEURISY. When a pleural cavity is full of fluid and the heart is greatly displaced, there will be, as a rule, comparatively little disturbance. There may, however, be danger of sudden death from syncope caused by some slight exertion. According to Weil, fatal syncope may be due to thrombosis or embolism of the heart or pulmonary artery, cedema of the opposite lung, or to degeneration of the heart muscle. He thinks that the mechanical effect of the displacement of the heart, or of the twisting of the great vessels, in the production of syncope, is not clearly demonstrated. Sudden death has in some instances been preceded by paroxysmal attacks of dyspnoea, or attacks of syncope. In some cases sudden death occurs without premonitory symptoms. Symptoms and diagnosis.—The subjective symptoms of sero-fibrinous pleurisy may be very variable as shown by the clinical history already detailed. Moderate fever, dyspnoea, slight cough, pain and weakness are the chief complaints. The fever range varies greatly with the nature of the case. Usually it is not a prominent symptom. The pain usually ceases when the effusion becomes considerable, but may return to some extent wiien absorption is effected. In cases of slight effusion and considerable plastic exudation the pain may be continued during the course of the disease. The cough is usually a characteristically short, hacking affair to wirich little attention is paid. Dyspnoea is trouble some on exertion. There may be a tendency to attacks of syncope. In subacute cases with large effusions the weak- ness, dyspnoea on exertion, and short, dry cough are the symptoms most likely to be remarked on by the patient in describing his condition. The physical signs of effusion within the pleural cavity may or may not be determinate and conclusive. Large effusions are usually recognized with ease, but small effu- sions, or loculated ones, may be very difficult to determine by the physical signs alone. Thickening of the visceral pleura from induration subsequent to the deposit of quanti- ties of exudate in acute plastic pleurisy, and consecutive in- terstitial fibrosis of the lung with partial collapse may fur- SERO-FIBRINOUS PLEURISV. 343 nish conditions which produce physical signs in every way similar to those of encapsulated effusion of moderate di- mensions. Inspection is important in effusions of any extent. If there is a large effusion the shape of the chest may be al- tered, the affected side appearing larger and its outline rounded. The depressions of the intercostal spaces may be effaced, or, rarely, the intercostal spaces may be bulging. (According to Stokes, bulging of the intercostal spaces is due to inflammatory paralysis rather than to intra-thoracic pressure alone, and indicates a severe lesion.) Measure- ments and cyrtometer tracings show that the enlargement of the side is more apparent than real, though according to Powell the total circumference of the chest is always in- creased. The patient may lean toward the affected side and there may be an evident degree of scoliosis. Extensive effusions in the right side may cause a fullness of the side from displacement of the liver. In small, loculated effusions in the lower portion of the pleural cavity the chest wall may be retracted and measure less than the opposite side and there may be depression and inspiratory retraction of the interspaces. In large effusions the loss of respiratory excursion on the affected side is at once apparent. Expansion of the affected side may be limited to the upper portion, or the whole side may appear motionless. In encapsulated effu- sions the loss of motion is limited to the area affected, gen- erally tne lower portion of the chest. Cardiac displacement, as shown by dislocation of the apex beat, is one of the most reliable evidences of pleural effusion. In effusion on the right side the displacement is less, relative to the amount of effusion, than in left effusions. In right effusions the apex is displaced to the left and slightly upwrards, and may be displaced as far as the ante- rior axillary line. In left effusions if the apex is under- neath the sternum it may not be discernible. It may be displaced to the right as far as the right nipple line. I en- tirely agree with Powell in his view as to the importance of cardiac displacement as an early and constant sign of pleur- 344 SEROFIBRINOUS PLEURISY. al effusion, but not with his statement that it occurs /;r/W passu with the extent of the effusion. In this respect the degree of displacement is not to be regarded as strictly re- lated to the amount of effusion in all instances. There are pneumo-dynamic forces other than positive increase in in- trapleural tension which cause the cardiac displacement— such as the elastic traction force of the opposite lung— hence, as in cases already cited, we may get displacement of the heart with very small encapsulated effusions. This absence of ratio between the extent of the effusion and de- gree of displacement of the heart renders the latter all the more valuable as a sign of pleural effusion, as displacement of the diaphragm, liver, and other organs which is depen- dent on positive intrapleural tension are late signs of effu- sion and only obtained, as a rule, in large effusions and where other positive signs have been previously obtained. By palpation we can at times more clearly determine the variations in chest expansion, the alteration in the in- tercostal spaces, or the displacement of the apex beat, than we can by inspection. We have, besides, absence of vocal fremitus over the area occupied by the fluid. This is the rule, though in small effusions where there are adhesions and especially in encapsulated effusions, the fremitus may be present or even increased if the lung has not collapsed and has undergone a moderate degree of fibrosis. It is very rare that fluctuation can be detected. Pulsation may very rarely be felt in sero fibrinous effusions. CEdema of the chest wall is seldom found. In children vocal fremitus may be present over the area of effusion in the absence of any adhesions. Percussion affords us valuable evidence of the presence of effusion. Percussion over the area of fluid gives a pecu- liarly toneless, flat note. The lack of tone is distinctive, though in small or loculated effusions the note may be mod- ified to such an extent that it differs but little from that given forth by collapsed or extensively indurated lung tissue. The limits .of the dullness are important and are best determined by light percussion. In encapsulated effusions the limits of dullness will have no distinctive features. In SERO-FIBRINOUS PLEURISY. 345 moderate sized or large, free effusions the upper and lower borders are important. The upper border of flatness may be found at any elevation according to the amount of effu- sion. With moderate effusion, no adhesions, and an elastic lung the line of flatness may be lower in the axillary and mammary regions when the patient is lying dowm than when sitting or standing. This is a positive evidence of fluid, but it is seldom that it can be definitely determined. With considerable effusion the upper border of flatness is irregular and has been described as Damoiseau's curve, or the letter S curved line of Ellis. It is highest in the axil- lary and scapular regions and dips dowmward in the inter- scapular region leaving a tongue of comparative dullness in the postero-median line winch Garland has called the "dull triangle." Anteriorly the line declines gradually until it reaches the sternum. According to Garland the line alwTays begins at a lower level behind than in front. In some cases of considerable effusion this line can be readily made out, in many it cannot be definitely determined. The lower border of flatness is outlined by the curved line of the diaphragmatic arch on the left side, while on the right the flatness runs into that of the liver. In large effusions of the left side the lower line of flatness may be straightened and much depressed and the tympanitic note of Traube's semi- lunar space may be obliterated. In very extensive effusions the flatness may extend to the clavicle, and, transversely, beyond the opposite side of the sternum. According to Pitres, Damoiseau's curve is not observed in small effusions, and in moderate sized effusions the anterior and lateral por- tions of the upper border of flatness form a horizontal line, while the posterior portion falls abruptly. Above the level of the fluid in cases of moderately ex- tensive effusion the percussion note may have a peculiar quality of tympany—the so-called Skodiac resonance. This is obtained in the sub-clavicular region and gradually dis- appears into dullness in the axillary and mammary regions. In front this resonance may cover a triangular area with the sternal border as the base. Skodiac resonance may be obtained behind above the level of the fluid but not so clear- 346 SERO-FIBRINOUS PLEURISY. ly as in front. Even in cases of very extensive effusion a modified form of Skodiac resonance will be obtained in the infraclavicular region. This variety of resonance over the upper portion of theichest, with marked dullness or flat- ness over the lowTer portion, strongly indicates pleural effu- sion and becomes positive with alteration in the upper level of the flatness with change in the position of the patient. With extensive effusions the tympanitic note in the first or second interspaces.may change in pitch when the mouth is opened, due to transmission of vibrations from the pri- mary bronchus (the tracheal tone of Williams). A cracked- pot sound may also be obtained in the same situation (Shattuck). During the absorption'of the] fluid the dullness gradu- ally descends, but remains, in some degree, over the lower portion of the chest even after the fluid has been entirely absorbed, and may persist for a long time in the event of adhesions or induration of the;pleura occurring, or any lung C3ndiiion which interferes with expansion. In regard to the value of evidence obtained by percus- sion relative to the amount of effusion present in a given case, we may note that Garland has pointed out that stomach tympany may be obtained at the level of the sixth rib in the nipple line in the presence of large effusions of th3 left side, and that similar effusions on the right side may not appreciably lower the liver dullness. PowTell maintains that the clinical'-evidence of the conversion of negative into positive intra-thoracic pressure though the extent of the effusion is (1) by the dullness extending above the third cartilage—the'patient being in the sitting posi- tion, and (2) by the Skodiac resonancejbecoming tubular in quality, or extinguished. He thinks a negative pressure is necessary for the development of the full-toned Skodiac note, and that tubular, cavernous, or tracheo-bronchial re- sonance in the region of the sterno-clavicular angle is indicative of positive pressure, and of a greater degree of effusion. By auscultation we may obtain valuable evidence of effusion through both the voice and the respiratory sounds. SERO-FIBRINOUS PLEURISY. 347 The voice sound, in large effusions, may be entirely absent below the level of the fluid, more particularly so over the front and sides of the caest. In large effusions we canal- most always obtain a modified form of bronchophony just above the lower angle of the scapula, and in moderate effu- sions the voice sounds usually have the same character just above the level of the fluid. iEgophdny is sometimes heard over pleural effusion and was thought by Laennec to be diagnostic, but it may be obtained over cavities, or consolidated lung. It is thought by some to be of value in distinguishing localized effusion from consolidated lung tissue. It is a sign of little value in pleural effusion. In some cases whispering pectoriloquy, Baccelli's sign {pectorilogue aphoni(juc), is clearly heard through the fluid by means of direct auscultation. It was thought by Baccelli to be diagnostic of serous, in contradis- tinction to purulent, effusions. In most cases of localized effusion, and in some cases of large effusion, high-pitched voice sounds can be heard over the area of effusion. While typical aegophony is not common in effusion the voice sounds often have a peculiar nasal twang or lisp. The respiratory sounds are absent below the level of the fluid in typical cases of considerable effusion. In the early stages the respiratory murmur is more intense above than below the fluid, and as the fluid increases in amount the sounds below the fluid become tub- ular in quality and eventually are bronchial or dis appear altogether. In front and at the sides of the chest the respiratory sounds are usually absent, while behind about the lowTer angle of the scapula there can usu- ally be heard a bronchial type of breathing, particularly on expiration, as the cartilages of the larger bronchi keep them from collapsing. These sounds are not so soft as the bronchial breathing of pneumonia and do not seem to be so distant from the ear. In localized effusions the respiratory sounds may be high-pitched and clearly heard over the area of the effusion. Bronchial rales, and fine, crackling rales from partial expansion of collapsed lung may be heard on deep inspiration. In some cases of considerable effusio n 34* SERO-FIBRINOUS PLEURISY. fine crepitating rales may oe heard on full inspiration due to congestion or oedema of compressed lung tissue. In mod- erate effusions friction sounds may be heard just above the level of the fluid, and where the pleura covering the tongue of lung which overlies the heart is involved there may be a pleuro-pericardial friction sound. The respiratory murmur in the opposite lung is increased in intensity—puerile type. The occurrence of congestion rales in the sound lung, to- gether with the cough of congestion, blood-tinged expec- toration, great dyspnoea and cyanosis indicates great pres- sure and a corresponding danger of syncope. When there is considerable displacement of the heart a systolic mur- mur may be heard at ics base which will disappear with removal of a portion of the fluid. With small effusions the breathing may be tubular, metallic or amphoric in quality, and there may be loud, resonant rales suggestive of a cavity. As the fluid is removed the respiratory sounds gradually return to the normal, though they may be feeble and sup- pressed for a long time in the lower portion of the lung. The diagnosis of sero fibrinous pleurisy is usually not difficult in typical cases of moderate or large effusions. They are most likely to be confounded with pneumonia, but a careful consideration of both subjective and objective signs will prevent mistakes. In pleurisy the onset is apt to be insidious, the temperature is lower, the ratio of pulse to respiration is not distinctive, the cough is less troublesome, the sputum is not rusty or sticky, the surface of the body is not markedly hot or flushed; the affected side is enlarged, the heart is displaced, fremitus is absent, percussion dull- ness is more absolute even to flatness, voice and respiratory sounds are lessened or absent, bronchial breathing and bronchophony, if present, are feeble and not marked as in pneumonia, pneumonic crepitation is absent, the upper out- line of dullness and its alteration with change of position are distinctive of pleurisy. Skodiac resonance is more pro- nounced in pleurisy. In localized effusions the diagnosis may be difficult and only to be S( tied by the exploring needle. Pulmonary col- lapse, fibiosis, hydatids, and new growths in the pleura may SEROFIBRINOUS PLEURISY. 34'. I simulate localized pleurisy. In all cases of lonbt, explora- tion should be made with the hypoder dc n 3edle. The use of the exploring needle has become almost a routine meas- ure by many who would not admit doubt or lack of precision as to their methods of diagnosis. The information which it "supplies as to the quality, not to say the nature, of the fluid may be useful from a therapeutic standpoint, and as it is a harmless measure when properly used, it should not be de- cried. In localized pleurisy the exploring needle is almost always necessary as the symptoms are so often indefinite we are seldom positive about the presence of fluid until we see it. The signs to be considered in differentiating serous from purulent effusions will be considered hereafter,though the exploring needle is practically always r3lied on to de- termine this question. Treatment.—In the treatment of sero-fibrin >us jjleuri sy there is opportunity for the exercise of judgment with respect to the course to be pursued in the individual case. There is a somewhat widespread tendency to resort to as- piration in all cases of effusion which are susceptible of diagnosis. There is a subtle temptation in this method in that it enhances the patient's appreciation of the physician's skill as well as of his own moral and financial obligations in the matter, besides giving him the mental satisfaction of an ocular demonstration of the cause of his trouble as well as more or less physical relief. On the other hand the con- servatism which advocates waiting a month or six weeks for the absorption of an effusion is not supported by our modern ideas of the aetiology of sero-fibrinous pleurisy. The views of H. I. Bowditch, the pioneer of the surgical treatment of serous effusions, which were considered some- what radical in his day, are now regarded as correct. Medicinally we may use hydragogue cathartics, diure- tics and diaphoretics for the removal of effusio is, but their action is uncertain and not much reliance is to be placed on them. Placing the patient on a dry diet and administering saline purgatives to deplete the serum of the blood, after the manner of Hay (k to H ounces of Epsom salts in con- :350 SERO-FIBRINOUS PLEURISY centrated solution every morning or second morning before breakfast), may cause considerable effusions to disappear rapidly. Salty diet may be allowed. Regular dosing with salt is recommended by some. Tonic medication is indicated and greatly favors the chances of absorption. Iodide of potassium and salicylate of sodium are recommended for the promotion of absorption and rather extravagant claims have been made for salicylate of soda in this respect. I have never been able to see that either of these remedies was of any particular value in promoting the absorption of pleural effusions. There is as much difference of opinion as to the power of medicinal measures to promote the absorption of effusions as there is about the efficacy of antiphlogistic treatment in preventing effusion. Laennec, Guerin, and Peter believed in our ability to prevent effusions, while Rickard expressed his unbelief. Beaumetz, Dieulafoy, Montuard Martin, Fais- ans and others are non-committal. For the promotion of absorption Hayem, Koster, and Deri recommend salicylate of sodium. Huchard advocates the use of diuretics for the same purpose, while Rickard, Faisans, Talamon, Vincent, Harris and many others disclaim any faith in the power of drugs to promote absorption. Potain recommends .sodium chloride in teaspoonful doses every few hours to prevent the reaccumulation of effusions. The important question of which cases of effusion are suitable ones for aspiration relates mainly to free effusions. Localized effusions should always be aspirated when it is possible to do so as there- is little prospect of the fluid ab- sorbing until at least a portion of it is removed. An en- capsulated effusion of only a few ounces may cause the per- sistence of pain, cough, dyspnoea and temperature eleva- tion, and all of them are much relieved by the removal of the fluid. It is claimed that as these cases are usually tubercular the effusion acts as a splint to the lung and by lessening functional activity constitutas a conservative pro- cess which should not be interfered with. In many of these cases there is no history of tuberculosis, and such a condi- tion cannot be demonstrated. The continued presence of a SERO-FIBRINOUS PLEURISY. 351 localized collection of fluid will result in changes in the pleura and lung which will permanently interfere with ex- pansion. Even in cases of well advanced tuberculosis of the lungs the occurrence of an effusion may produce symp- toms which demand its removal, as occurred in the follow- ing case: Young man 20 years old. Family history of consump- tion. Sick ten months with tuberculosis of the left lung, the upper lobe being consolidated down to the upper border of the third rib. Temperature ranged from 99.5° to 101". Became worse rather suddenly. Temperature rose to lo3~ and pulse to 120. Examination showed a lobular pneu- monia of apex of lower lobe. Pain in the side, cough and dyspnoea were distressing. These symptoms continued for more than a week, the temperature not going below 102". Examination showed evidences of a local collection of fluid anteriorly below the fourth rib on the left side. By aspiration eight ounces of. fluid was removed. The symp- toms improved at once and in two or three days the patient was quite comfortable. In regard to free effusions we find many rules as to which cases should be operated and when to interfere. The nature of the fluid, the extent of the effusion, the age. personal and family history of the patient are important in determining for or against interference. In inflammatory cases with moderate effusion, where friction sounds can be heard at the upper border of the fluid, and when the fluid contains many flakes of lymph, it is likely that the fluid affords protection to the inflamed surfaces of the pleurae and that the early removal may favor the formation of adhesions. In these cases it is best to depend on tonics and eliminatives for awhils and not to interfere unless the fluid tends to increase rapilly, or in case it remains stationary for two weeks. According to Pow^ell if there is good Skodiac resonance down to the third rib the lung is in a condition of physio- logical rest and interference is uncalled for; if pyrexia •continues at the end of the second week we should wait a week longer before operating; if the patient's family history is unfavorable we should interfere early unless the effusion 352 SERO-FIBRINOUS PLEURISY. is in the same side with pre-existing lung disease; if the effusion extends up to the second rib or higher, extinguish- ing Skodiac resonance and causing decided increase in the measurement of the side, especially if there is retching cough,frothy, viscid expectoration speckled with blood, and fine crepitations in the healthy lung, we should interfere at once without regard to the stage of effusion. In a large percentage of cases of sero-fibrinous effusions of insidious onset the pressure symptoms as defined by PowTell do not present, nor does absorption occur. While it is true that in most of these cases the presence of a considerable amount of fluid in the chest for three or four weeks does not necessarily compromise the lung to any extent, it does the general condition of the patient. In view of the relief afforded the patient, as well as the avoidance of permanent injury to the lung by the early removal of a portion of the fluid, it is not clear that we are justified i:i waiting the appearance of pressure symptoms or of delaying for three weeks in the hope that absorption may take place. It is undoubtedly better to act within the shorter period stated by Bowditch, who says: "I cannot see any valid reason for continuing any active treatment more than one, two or three weeks without puncturing." This is all the more clear when we note the clinical history of these cases after partial aspiration, and how it emphasizes the force of Trousseau's observation that the "slowness in the absorption is, perhaps, as much dependent on the pressure exerted by the excess of fluid upon the serous membrane by which absorption has to be performed, as by the mere greatness of the quantity." The force of this observation is exemplified in the case of encapsulated effusions which, however small, are not absorbed, as a rule, until partially removed. Free, sero-fibrinous effusions, especially those of insidious onset, should be aspirated as soon as there is sufficient accumulation of fluid to cause prostration, dys- pnoea, much compensatory action of the opposite lung, and displacement of the heart, though, as before remarked, the latter symptom cannot always be regajded as directly pro- SERO-FIBRINOUS PLEUK1SY. 353~ portionate to the extent of the effusion. Dieulafoy would aspirate an effusion of three or four pints, while Peter would not interfere with one of 1,000 grammes, but would aspirate one of 2,000 grammes, and Hardy operates if suffocation threatens. Peter would not operate until after the twentieth day, while See thinks the effusion is sure to return if not operated on before the twentieth or thirtieth day. Rickards thinks the effusion not likely to return if aspi. rated during decline of the temperature. Talamon thinks that a serous pleurisy which is not tapped is recovered from more completely than one which has been tapped. No definite rule can be formulated regarding the time to interfere with an effusion. Each case presents its own indications. Subacute cases of insidious onset and with considerable effusion can usually be aspirated with advan- tage without special regard to the temperature or to the length of time the effusion has existed. The fever will generally decline rapidly after aspiration. In cases with more acute onset, high temperature, and exhibiting friction sounds denoting considerable plastic exudation, as well as considerable effusion, it is well to wait a week or two until the activity of the process subsides, before aspirating, as absorption of the balance of the effusion is not likely to occur during the active stage, and reaccumulation of the fluid is quite likely to take place, as occurred in the follow- ing case recently under observation: Man aged thirty-three years. Laborer. Sick for a week with pain in the side, cough, dyspnoea and fever. Pulse 110; temperatorel03°. Examination showed the left pleural cavity to be filled to the level of the fourth rib with fluid. Friction sounds could be heard from the third to the fourth ribs. Four days later there was no change in the amount of fluid and the temperature was the same. As the patient was attending the out-department of the clinic and was quite weak and suffering from dyspnoea, it was decided to aspirate the fluid although the activity of the process had not yet modified. Thirty-eight ounces of fluid were re- moved. Four days later the fluid had reaccumulated and the temperature was still high (102.8°). Ten days later the temperature had declined to 101° and the patient felt much better although the amount of fluid was fully as great as at 354 SERO-FIBRINOUS PLEURISY. the time of aspiration. Thirty-six ounces of fluid were now removed and recovery ensued without further trouble. In the above class of cases the fever maybe accepted as a rough clinical guide to the stage and intensity of the in- flammatory process, and as such, may be taken as an indi- cation for or against aspiration. As to the dangers accompanying aspiration, they are, according to Potain, chiefly pulmonary congestion, svn cope, embolism, and cardiac weakness. Samuel Gee points out the danger of death from serous expectoration immed- iately or shortly after operation and resulting from oedema of the lungs, also the danger of pneumothorax from puncture of the lung or from spontaneous rupture of the lung; of haemorrhage from the pleural membranes, and of embolism of distant arteries, the most common result being hemiplegia. Pneumothorax may develop after operation, it rarely appears at the time. Subcutaneous emplrysema may occur without pneumothorax. Free albuminous expectoration, associated with dyspnoea and likely to prove fatal, is described by French authors. It comes on after operation. These dangers are not imminent if aspiration is carefully performed. At the same time we must bear in mind the possibility of fatal syncoi)e occurring in any case. The liability of transforming a sero-fibrinous effusion into a purulent one by aspiration was emphasized by Verneuil, Le Fort and others. Modern experience confirms the view of Beaumetz, Dieulafoy and others that this danger is insignificant with aseptically performed operations. In encapsulated effusions it is evident that there can be no elective point for puncture. In free effusions we select the point at which we can most readily gain access to the fluid. This is usually in the fifth, sixth or seventh inter- space just anterior to the axillary region, or about half way between the nipple line and the mid-axillary line. The interspaces are widest in this situation and the muscular tissues are thinnest. This region is most easy of access with the patient in the recumbent or semi-recumbent position. Another point often selected for puncture is posteriorly just below the angle of the scapula. There is SERO-FIBRINOUS PLEURISY. 355 more tissue in the way here, and the interspaces are narrower; there is likely to be a heavy deposition of lymph on this portion of the pleural membrane, and, according to Gee. the lung is more apt to be adherent at this point, and the consequent danger of pneumothorax or of sloughing of the lung from perforation is greater. Various forms of trocar and cannula, and reversible and rotary pumps, have been devised for the aspiration of fluids. The simplest means are the best. A trocar and cannula connected with a long tube in which is placed a glass coupling may be used. If nothing better is at hand an ordinary trocar and cannula may be used by fastening around the mouth of the cannula a piece of gold-beater's skin for a valve. When wet, this tissue will collapse and pre- vent the entrance of air. The best instrument is some aspirator like the Potain modification of the Dieulafoy instrument. If the patient is wTeak or nervous a hypodermic injec- tion of jt to 1 grain of morphia may be given immediately preceding operation. If the heart is weak 7V grain of strychnia may be given in addition. The patient should be in a reclining position with the .shoulders elevated. In small, or encapsulated effusions, the sitting position, may be best. Previous exploratory puncture will have told us how large a needle to use, though any needle may become blocked by plugs of lymph. The chest wall should be thoroughly cleansed. Local anaesthesia, and incision of the chest wall are unnecessary when using ordinary aspirator needles. If the tissues are indurated it often requires considerable force to get the needle into the pleural cavity, entrance to which is immediately appreciated through the lack of resistance. We should be careful not to injure the visceral pleura in moving the needle about, though some scratching of the pleura usually does no great harm. If a needle with a sliding point is used the danger of injury to the visceral pleura will be obviated. It is best not to employ any more suction force than is necessary to keep the fluid running. There can be no rule as to the quantity of fluid to be 356 PURULENT PLEURISY. removed. It is impossible to estimate the quantity of fluid". in a given case, and we do not expect or desire to remove all of it. Aspiration should be stopped as soon as the patient exhibits hurried respiration, cough, or complains of pain. If the fluid becomes bloody, aspiration should be stopped. If lymph blocks the needle or if deposits of lymph interfere with aspiration, the needle should be withdrawn and subsequent attempts made. The withdrawal of a very small quantity is often fol- lowed by absorption of the fluid. If the fluid reaccumulates it should be aspirated as often as necessary. S. West advo- cates free incision and drainage in chronic cases of sero- fibrinous pleurisy which repeated tappings fail to cure. The after treatment of these cases consists of tonic medication, pulmonary gymnastics, and, perhaps, change to a slightly higher altitude for a time. Restricted expansion of the lower portion of the lung may be present for a longtime and some degree of loss of expansion maybe permanent. PURULENT PLEURISY. Purulent pleurisy (empyema, suppurative pleurisy) is the result of an inflammatory process more intense but less sthenic than that which causes serofibrinous effusions. It is usually a secondary affection though it may be primary. Empyema may be acute or chronic, and may be general or local in extent. ^Etiology.—Empyema arises from infection of the pleural membranes with some microorganism. Pneumo- cocci, streptococci, and tubercle bacilli are the usual infective agents. Tuberculosis does not often cause empyema. When the latter condition occurs in tuberculosis it is likely ' to be due to pneumococcus or to streptococcus infection. The streptococcus is the common infecting agent in the purulent pleurisies of the adult resulting from the various septic infections of the pleura, and in empyema secondary to some of the infectious diseases. The pneumococcus is a common infecting agent in the purulent pleurisies of child- hood. Meta-pneumonic empyerra is almost always due to PURULENT PLEURISY. 357 the pneumococcus, and these cases run the most favorable course. Pneumonia does not always precede the pleurisy. Primary pneumococcus pleurisy is a not uncommon con- dition. It must be remembered that pleural effusions after pneumonia are sometimes serous and may contain pneu- mococci. Also that serous effusions not secondary to pneumonia may be due to pneumococci. The staphylococcus, the typhoid bacillus, the influenza bacillus, and other organisms may be the infecting agents in a few instances. In some cases observed by Thue during an epidemic of influenza, the pneumococcus was the organ- ism most frequently found. Empyema occurs as a sequence of acute sero-fibrinous pleurisy in persons whose general health is not good. It is difficult to explain the cause of this change in most instances. Aspiration is a rare cause of a serous effusion becoming purulent, and is constantly becoming more infrequent. Primary purulent pleurisy is not uncommon in children. Secondary purulent pleurisy is common after pneu- monia, scarlet fever, and typhoid fever; and more rare after measles, whooping-cough, diphtheria, erysipelas, etc. Local conditions such as wounds of the chest, frac- tures of the ribs, or perforations of the pleura by tubercu- lous processes in the lung frequently cause empyema. Pneumonia, bronchiectasis, pulmonary abscess, gangrene, cancer or tubercle; mediastinal diseases, pericarditis, diseases of the oesophagus, cervical abscess, cancer or abscess of the chest wall, tubercle of the bronchial glands, caries of the vertebras, ribs, or sternum; peritonitis, sub- phrenic abscess, abscess of the liver, spleen or pancreas, and perforation from a gastric ulcer may act as causes of secondary purulent pleurisy. Morbid anatomy.—Inflammations of the pleura which are of sufficient intensity from the start, or which develop sufficient intensity at any period, may be attended by the formation of pus. In this event the exudation of cor- puscles is sufficiently free to give the exudate a purulent character. The effusion usually separates into clear, 35S PURULENT PLEURISY. greenish-yellow serum in the upper portion, and thick, creamy pus in the lower part. It may be simply turbid and contain floculi of lymph. The pus from pneumococcus pleurisy is usually thick and creamy, is not clotted, and on standing does not readily separate into clot and serum, but thin, greenish serum appears on the surface after a time (Netter). Pus from streptococcus pleurisy is moderate in quanti- ty, yellow in color and not very thick. On standing it sep- arates into two layers: the upper clear and abundant, the lowTer may contain shreds of false membrane. Pus from an empyema usually has a sweet, heavy odor. In cases of wounds of the pleura the pus may be fetid. In gangrene of the lung or pleura the pus has a markedly offensive odor. The pus from an empyema may have a gelatinous consist- ence after withdrawal, or it may contain quantities of gas which makes it quite foamy in an aspirator bottle. As the connective tissue of the pleural surfaces be- comes involved in the process a granulating tissue is formed which may continue to generate pus. If the pus is drained its formation will generally cease, the granulation tissue becomes fibrous, and adhesions of the pleural surfaces oc- cur. The pleural membranes may become greatly thick- ened, and form grayish-white layers from 1 to 2 mm. in thickness. The costal surface may show erosions and fistu- lous openings. The visceral pleura may show perforations. The new tissue in the pleural layers undergoes much con- traction which is followed by various degrees of retraction of the chest walls. Calcareous plates may form ,in the adhe- rent pleural layers and may be of considerable size. The lung may be markedly compressed. Displacement of the thoracic organs may be considerable. Intra-pleural pres- sure is usually higher in empyema than in serous effusions. Loculated empyema (pleural abscess) usually occurs in the lateral or posterior, lower portion of the chest. It may occur between the base of the lung and the diaphragm, usually on one side, rarely on both. Interlobar empyema may occur and may be discharged through the lung into a bronchus. Apical empyema is very rare but may occur. PURULENT PLEURISY. 359 Clinical history.—The clinical history of purulent pleurisy is quite as variable as that of sero-fibrinous effu- sions. The onset may be abrupt with high fever, cough, pain and early dyspnoea. Quite frequently the onset is in- sidious and takes place during the course of, or following, some of the acute diseases. There may be no pain, little or no cough, and no dyspnoea until the pleural cavity be- comes quite full. The character of the effusion and, to some extent, its clinical manifestations are largely deter- mined by the virulence of the infecting organism and the re- sistance of the individual. Virulent infections cause effusions rich in cell elements and deficient in fibrin, and are likely f,o be purulent from the start. This is particularly true of strepto- coccus infections, though they may be primarily sero-fibrin- ous. Streptococcus pleurisies are most common in the adult after the infectious diseases, pneumonic inflammations, and may occur after pneumothorax from perforation in tu- berculosis. The onset may be acute, with pain, high and irregular temperature, and repeated chills. Again the on- set may be insidious with only moderate temperature. Absorbtion rarely occurs; they seldom discharge through the bronchi; reaccumulation after puncture is rapid and frequent; the course is towTard chronicity, and relapses are common. The mortality rate is high (25 per cent.—Straus). Pneumococcus pleurisies may be primary but are usu- ally secondary to pneumonia, coming on with the onset, during the course of, or after the crisis of the lung inflam- mation. They may come on several months afterward (Straus). Usually they come on immediately after the crisis The onset may closely resemble that of pneumonia with the exception of a more rapid pulse. In primary pneumococcus pleurisies there may be an imperfect crisis about the seventh day, the dyspnoea, however, persisting. The temperature in pneumococcus pleurisies usually ranges from 99" to 102°, and in some instances may be absent (Straus). The effusion may be primarily se^o-fibrinous and subsequently become purulent. The prognosis is more favorable than in any other form of empyema. Absorption may rarely occur. Simple aspiration may be followed by 360 PURULENT PLEURISY. recovery. If left untreated they are very likely to» evacu- ate spontaneously. The following histories are typical of meta-pneumonic empyema from pneumococcus infection: Girl, aged seven years. Left apical pleura-pneumonia. The pneumonia ran the usual course, being accompanied by marked pleuritic friction and pain., Crisis on the sixth day, the temperature going down to normal. On the evening of the seventh day the temperature rose to 102". On the eighth, ninth and tenth days the temperature varied from 99.5° in the morning to 1<>2" in the evening. Moderate sweating toward morning. On the tenth day there were signs of fluid in the left side reaching as high as the third rib. Aspiration of over a pint of pus. On the twelfth day the fluid had reaccumulated. Siphon drainage instituted and maintained for four weeks. Complete recovery. Perma- nent loss of expansion less than one-fourth of an inch, as observed two years later. Young woman, seventeen years old. Pneumonia ter- minating by lysis on the ninth and tenth days. Temperature normal in the morning, and 99.5° in the evening for three days. Temperature then rose to 101.5°, and varied from 99° in the morning, to 101.5° in the evening. Examination showed the left side to be full of fluid to the upper border of the third rib. Aspiration of thirty-four ounces of pus. Five days after, the fluid had reaccumulated. Siphon drain- age instituted and maintained for four weeks. Complete re- covery. Loss of expansion, observed twTo years afterwxard. one-fourth of an inch. Tubercular empyema may or may not be preceded by evidences of pulmonary tuberculosis. It may follow tuber- culosis of the bronchial glands. The effusion may be at first sero-fibrinous. It may be due to streptococcus or to pneumococcus infection. The onset may be acute or sub- acute. The course has a tendency toward chronicity. The effects of the effusion on the general condition of the patient, and the pressure effects are often inconsiderable. There may be little fever. The fluid will usually return after aspiration. In a large proportion of the cases of tubercu- lar empyema the various operative measures undertaken for its relief fail of the desired result because of the inabil- ity of the lung to expand, and they are converted into cases PURULENT PLEURISY. 361 of chronic empyema which furnish a varied and irregular clinical history. Chronic empyema is essentially a surgical affection though the responsibility for its occurrence has been laid at the door of medical unskillfulness (Ewald). That this charge is not just is pointed out by Curtis who calls atten- tion to the fact that in some cases the patient has followed his usual avocation for weeks while ill and before coming under observation, and that in tubercular cases it may not be possible to prevent the empyema from assuming a chronic form. The history of chronic empyema may be simply that of loss of flesh and strength, some dyspnoea, slight irregular fever, and eventually signs of enlargement of the side with, possibly, pointing of the abscess in some of the intercostal spaces, as in the following case: Boy, aged eight years, sick for four months with irreg- ular fever, shortness of breath, loss of appetite and flesh, Left side bulging below the fourth rib in front. In the fifth interspace to the left of the nipple line there is a prominence over which the skin is tense and reddened. Fluc- tuation can be detected. Examination shows signs of fluid as high as the fourth rib. Symptoms of septic infection are more or less marked in empyema especially in children. Sweating may or may not be pronounted. There may be little cough, and the fever may be very irregular. In chronic cases there will be various degrees of deformity from contraction of the chest walls. If purulent effusions in the pleura are not interfered with they may affect various tissues within or without the chest. They may disappear by absorption in a very limited number of cases, the pus becoming inspissated, lime salts deposited, and the pleurae greatly thickened. Perforation into a bronchus may occur, usually in loculated empyema, in which case pneumothorax generally results. Necrosis of the visceral pleura may occur and the pus may find its way into a bronchus without perforation of the latter, in which case pneumothorax is absent (Traube). Perfora- 3(2 PURULENT PLEURISY. t'on of the chest wall may occur (empyema necessitatus), us- ually in the antero-lateral region of the chest (Cruveilhier), and generally in the fifth interspace (Marshall). The pus may break into the mediastinum, pericardium, oesophagus, stomach, or peritoneum. It may pass down along the spine and psoas muscle into the iliac fossa. Symptoms and diagnosis.—The subjective symp- toms of purulent pleurisy differ from those of the serofib- rinous form chiefly in there being a more irregular, septic type of fever, greater prostration, less cough, 'greater tend- ency to sweating, less dyspnoea unless the quantity of fluid is great, and little or no pain. Leucocytosis is generally present in purulent pleurisies and may be marked. The physical signs are those of general or loculated effusion and are similar to those of sero-fibrinous effusions. The main differences in empyema are the greater degree of enlargement of the affected side, particularly in children with free, purulent effusion; the greater tendency to oblit- eration and bulging of the intercostal spaces; the more fre- quent occurrence of oedema of the chest wall, and enlarge- ment of the subcutaneous veins; a greater degree of displace- ment of the heart, liver, or diaphragm, due, according to Senator, to the greater wTeight of the fluid. The breath sounds may be loud and tubular over a considerable effusion, especially in children. According to Baccelli whispering pectoriloquy is not heard over a purulent effusion. Pulsation synchronous with the heart's action is a phe- nomenon occasionally met with. Pulsating pleurisy occurs in two forms: The intrapleural form in which the whole side of the chest may pulsate without any bulging or point- ing of the effusion. Inmost of these cases the pulsation is confined to the praecordial region or to the lower intercostal spaces (Gee). In the second form—the pulsating empyema necessitatus. there is an external, pulsating, bulging tumor in one or two places. The bulging is rarely larger than an orange. In either variety the heart is much displaced, and the heart sounds may be conducted to the bulging area. There is no thrill on palpation, and no expansion similar to PURULENT PLEURISY. 363 that of aneurism. Pulsating effusions are usually chronic and practically always left sided, and may be associated with pneumothorax, in which case the pulsation is conveyed by tne fluid alone. The effusion is almost always purulent, though pulsating, sero-fibrinous effusions have been ob- served. Loculated empyema may pulsate if situated near the heart. If so there is always bulging. Intrathoracic aneurism, and pulsating, cancerous tumor may simulate pulsating empyema. In the differential diagnosis from sero-fibrinous effusions the exploring needle will settle many doubts and prevent many mistakes. The following characteristics of purulent effusions may, however, be taken into consideration: They are most common in children; most often due to pneumo- coccus or to streptococcus infection; the onset may be of the pneumonic type in primary pneumococcus infection or in meta-pneumonic cases, while in the adult it may be insid- ious; in the later stages the fever is of the hectic type, or, in some instances, the fever may be absent; the clinical history shows emaciation, profuse perspiration, febrile urine, rigors, anaemia, cachexia, and. in adults, great pros- tration and delirium; leucocytosis is present; fluctuation in the interspaces, oedema of the chest wall, pointing and pulsation may occur. In loculated empyema there may be rupture of the sac. Absorption is rare but may occur in pneumococcus infections ic children. In fetid empyema we may have typhoid, septic symp- toms indicative of infection of the whole body. Similar symptoms may occur in cases which are not fetid. Coma and delirium may be present. Enlargement of the spleen, diarrhoea, and joint symptoms may occur. Death may take place in ten or fifteen days no matter what treatment is employed. Loculated diaphragmatic empyema may be associated with hepatic or subphrenic abscess. It may be latent and is difficult to diagnose especiallv wiien it contains gas. Sub- phrenic abscess usually occurs on the right side. There is usually pleurisy on the same side, generally empyema with or without perforation of the diaphragm. The pus is 364 PURULENT PLEURISY. fetid and may burst into the lung even if there be no em- pyema. If empyema be present it will be localized and the physical signs of the two conditions will be practically identical. There is fulness and tightness of the hypochon- drium; the liver may be depressed, but is not always so; besides, it may be depressed in uncomplicated empyema. In subphrenic abscess there is dullness and signs of effusion at the base whether effusion be present or not, as the dia- phragm may be pushed upward and the lung compressed or collapsed. The heart apex may be displaced without there being empyema, but usually is not. Puncture or aspiration may show the presence of pus, but may not indicate its lo- cation above or below the diaphragm as the needle may pass through the diaphragm when the latter is much ele- vated. Even resection of a rib and exploration with the finger may be indecisive. When a subphrenic abscess con- tains gas the sounds may have a general amphoric char- acter and there may even be no liver dullness. In some cases of long continued abdominal pain the patient may develop a unilateral type of breathing result- ing in an elevation of the diaphragm and of the liver dullness, laterally and behind, of as much as two inches, the anterior, lower border of liver dullness remaining un- changed. This area of dullness may resemble that of hepatic, subplerenic, or localized pleural abscess. Pyopericardium, suppurating hydatids of the liver, pleura, or lung; necrosis of the ribs, sternum, or vertebrae, Wunderlich's "peripleuritis" etc., are conditions to be elimi- nated in the diagnosis of localized empyema. Treatment.—The treatment of purulent pleurisy is altogether surgical. The fact that it is possible in very rare instances for cases of pneumococcus infection to be- come absorbed has absolutely no bearing on the indications for surgical measures. We will not enter here into a discus- sion of the general surgical treatment of empyema, but will consider a few points of general interest. In acute, general empyema the course to be pursued depends upon the nature of the infection, the age of the patient, and the character of the effusion. In children and PURULENT PLEURISY. 365 young people general empyema occasionally recovers by simple aspiration, though this may have to be repeated several times. Upon one occasion I performed the ninth aspiration on a boy for post-scarlatinal empyema. He was aspirated twice subsequently. About a year afterward I examined the boy's lungs and found it difficult to tell which side had been affected. It is generally admitted, however, that we are not warranted in trusting to simple aspiration for the cure of purulent effusion, and that drainage is necessary. It makes but little difference what methods are pursued provided that drainage is sufficiently free, though there is much discussion over the procedures necessary to procure adequate drainage, particularly in relation to the necessity for rib resection. Surgeons are generally in favor of resec- tion in all cases of empyema. Godlee recommends resec- tioh"as a routine practice to which there are certain except- ions." The operation is neither difficult nor dangerous, and while there is no particular objection to it in any case, it is not necessary in every instance. In empyema in children general opinion seems to favor incision and drainage up to the end of the second year. After this period resection is generally recommended. Koplik recommends simple in- cision, at least for primary operation, in children under one year, especially when they are weak; in older and stronger children he thinks resection may be best. Holt recom- mends simple incision rather than resection. As the death rate in children from one to three years old is given as nearly fifty per cent, it is evident that the best results have not yet been attained. Bogart thinks that in children resection of the ninth rib in the posterior axillary line is ordinarily demanded, and should be preceded by a preliminary aspira- tion when the collection of fluid is large; primary irrigation, curettage, and multiple rib lesection is contradicted in children unless to aid inclosing a persistent cavity or sinus. Chloroform is not contradicted in operating, though ac- cording to Winters full anaesthesia should not be induced. In general cases of empyema secondary to infectious diseases, especially meta-pneumonic empyema, where by 366 PURULE.VT PLEURISY. exploratory puncture we know that the effusion is compara- tively thin and probably does not contain great masses of lymph, we can, by a simple siphon drainage, obtain more perfect results than by resection of the ribs. This method is but little more trouble than aspiration and does not in anyT way interfere with subsequent resection if the latter is deemed necessary. The cases whose clinical history is cited on page 360 were siphoned in the following manner: A trocar and cannula—the cannula constructed so as to just admit of the passage of i\ inch tubing—was passed through the sixth or seventh interspace in the anterior axillary line. The trocar was withdrawn and some T\ inch tubing passed into the chest and down almost to the bottom of the pleural cavity. The cannula was withdrawn over the tubing. The tube should project about eight inches from the chest wall. Cotton is packed around the tube at its point of exit, and a narrow strip of plaster fastens the latter to the chest wall. Ordinary syringe tubing is convenient as that portion of the tube which is within the chest becomes rigid and does not flex on itself as pure rubber tubing is apt to do. On the outer end of the tube there should be an ordinary flush-bottle clip and a glass coupling, When the tube is in place about three yards of tubing is attached to the coupling and run into a jar of water at the bed side. With the thumb and finger the air is then stripped out of several feet of the tube and the clip is moved down and fastened below. After the pressure is relieved the pus can be siphoned out rapidly or slowly by occasionally stripping out a few feet of tubing and fasten- ing the clip. At the end of a week the tube can be with- drawn a couple of inches, and by gradual withdrawal the cavity will become small enough in three or four weeks to put in a short, open, drainage tube, which can be removed and the opening allowed to close when the discharge dimin- ishes to about a dram in twenty-four hours. A slight degree of chloroform anaesthesia is desirable though not absolutely necessary in introducing the tube. In a few days the pa- tient can be placed in a wheel-chair and taken out of doors, which is a great advantage inchildren in hastening recovery. PURULENT PLEURISY. 3:57 General effusions of several weeks standing, especially if there is tendency toward pointing, are better treated by free incision with or without resection of a rib. Better drain- age is usually secured in all positions of the patient when the resection is made at the ninth rib just outside of the line of the angle of the scapula (Gee), though many surgeons prefer operating in the anterior axillary line. A chief danger after operation is pneumonia of the opposite lung. Considerable elevation of temperature after operation is usually due to imperfect drainage or to pneumonia. Caille states that the temperature remains near the normal after operation in very few cases, but that its elevation always means something which should be sought for and cor- rected. Irrigation of the pleural cavity after operation for free effusion should not, as a rule, be practised. Offensive ef- fusions generally become less so soon after free drainage is established. There is danger of fatal syncope in some cases, and general opinion is against irrigation. In localized empyema resection is almost always neces- sary. Irrigation is frequently indicated but should be used with caution. Irrigation by submersion in a warm bath is recommended by Zeman when the opening is large enough to allow the water to pass freely in and out. This method is endorsed by Adams. In tubercular empyema the pro- priety of establishing free drainage may be doubtful. In many of these cases it is difficult or impossible to close the cavity, and to produce expansion of the lung under these circumstances may hasten the destructive process in the lung. Repeated aspiration may be practiced, and sterilized or antiseptic solutions may be siphoned in and out of the cavity. In some cases of tubercular empyema operation may be indicated. In cases of double empyema it is safer to drain one side and aspirate the other if necessary, postponing the drainage of the opposite side until the patient becomes accustomed to the change in the respiratory conditions. In case there are adhesions it may be perfectly safe to drain both cavities .at once. 368 PURULENT PLEURISY. Failure of an empyemic cavity to close is met with most often in tubercular cases. Absence of adhesions, extensive collapse of the lung, great rigidity of the chest wall, bron- chial fistula, caries of the spine or ribs, tumors, and foreign bodies are the conditions which most commonly interfere with closure of the cavity. In tubercular cases where sup- puration persists, it may be necessary for the patient to wear a tube for an indefinite period. In some long-standing cases incision and drainage fail to result in closure of the cavity because the changes which have taken place in the pleurae interfere with expansion of the lung, retraction of the chest wall etc., which are neces- sary to the closure of the cavity. These pleural changes are great thickening (^ to 1 inch), and the development of calcareous plates which may be large or small and most often occur in tubercular cases. It may be impossible to remove them. If a cavity fails to close in spite of free, single or double drainage, and particularly when the drainage is not perfect, the effects of chronic suppuration will appear: The patient becomes anaemic, exhibits hectic fever and develops amyloid visceral changes, enlarged liver, diarrhoea, emaciation and clubbed fingers; the urine is light in weight and may be al- buminous. These conditions may almost entirely disappear if perfect drainage is established and the cavity closed. The possibility of attaining this desirable end by the per- formance of one of the more extensive operations, such as Estlander's operation should be considered.* In cases which exhibit, as a result of blood, poisoning, the so-called "pulmoval cerebral abscess," the abscess should be opened if distinct localising symptoms are present, as they are otherwise fatal. The connection of these- abscesses with empyema is not clearly understood. According to Gowers they do not result from true tubercular cavities; the abscess is single in about half of the cases; it is usually sit- uated in the posterior lobe of the hemispheres; the cerebel- lum is seldom affected and never singly, *For consideratioii of the sreneral sursical treatment of chronic empyema reference should be made to Pager's "Surgery of the Chest" God !*-»•« nnnti.K.tS to Fowler and Godlee's Diseases of the Lungs", etc ' U0CUee s contribution: CHAPTER XVI. PNEUMOTHORAX. By pneumothorax we mean the presence of air in the pleural cavity. The presence of air alone in the pleural sac is a rare condition, pneumothorax being practically always associated with serum {hydro-pneumothorax) or with pus {pyo- pneumothorax), and the term pneumothorax, as ordinarily employed, applies to either of these conditions. Pneumothorax occurs more frequently in males than in females. It occurs chiefly in adults between the ages of twenty-five and thirty-five years—the period of greatest mortality from tuberculosis, but may be met with in very young children. ^Etiology.-—When air enters the pleural cavity the normal intrapleural tension in the pleural cavity (a nega- tive force equal to-6 to-8 millimetres of mercury.—S. West) which practically equals, but opposes in direction, the normal elastic recoil of the lung (a positive force equal to 6 to s millimetres of mercury.—Donders) is relieved and atmospheric pressure is applied to both surfaces of the vis- ceral pleura; the normal elastic recoil of the lung will then cause its collapse. This alteration affects the mediastinum, which is a movable partition, and its contents. The elas- ticity of the lung of the opposite side is also a factor in producing displacement of the organs within the chest. In explanation of the absence of pneumothorax in cases where it would appear to be a natural result, West assumes the presence of a cohesion of the pleurae—equal to ll\5 milli- metres of mercury—which counteracts the tendency toward retraction of the lung. If the lung on the affected side is adherent to the chest wall in part or in whole the elasticity of the lung is counteracted and the displacement of organs, dyspnoea, etc., will not be so marked. Thus the effects of pneumothorax are more marked in a healthy chest than in 370 PNEUMOTHORAX. one with adhesions between the lung and chest wall. If the pleura is entirely adherent and the elasticity of the lung completely negatived, the opposite lung may become con siderably enlarged. Its elasticity, however, is not dimin- ished, and it should therefore, according to West, be called ' 'compensatory hypertrophy." If the opening in the pleura by which the air gains en- trance becomes closed or has a valvular action, the intra- thoracic pressure may become greater than that of the at- mosphere, and the displacement of the organs within the chest may be increased. The rise in pressure may be due to rise in pressure from the valvular action of the opening during expiratory -efforts, rise in temperature of the gas contained in the pleura, or to compression of the air by effusion into the pleural cavity. Pneumothorax occurs from perforation of the costal, visceral, or diaphragmatic pleurae; and from the spontaneous development of decomposition in pleural exudates. Perforation of the costal pleurae may arise from punc- tured or shot wounds of the chest wall, in which case it may or may not be associated with extensive emphysema of the chest wall; from exploratory puncture (Biggs, Osier); rarely from fracture of the ribs; and occasionally from abscess of the chest wall. Perforation of the diaphragmatic pleura from abscess originating in malignant disease of the stomach or colon, and especially from ulcer of the stomach, may cause pneumothorax. Perforation of the visceral pleura is the usual cause of pneumothorax. The most frequent factor in its production is tuberculosis of the lungs, especially acute pneumonic tuberculosis. According to various authorities ninety per cent, of the cases of pneumothorax are due to pulmonary tuberculosis. [Biach's collection of 918 cases shows 76 per cent, due to tuberculosis. Saussier's 131 cases shows phthisis in 81 cases, empyema in 29 cases, and gan- grene in 7 cases.] The percentage of cases of tuberculosis which are complicated by pneumothorax is given by Powell and West as 5 per cent, and by Fowler as 6.5 per cent. Em- pyema and pulmonary gangrene are the next most frequent causes of pneumothorax by perforation of the visceral PNEUMOTHORAX. 371 pleurae. Rarer causes are: abscess or hydatids of the lung or mediastinum, rupture of the pleura over a septic infarc- tion, rupture of a haemorrhagic infarction occurring in chronic heart disease (Osier), rupture of air vessicles of a normal lung, (West thinks that an undetected lesion is re- sponsible for these cases), strains from heavy lifting, or from unusual positions of the body, emphysema, bronchiec- tasis, disease of the oesophagus or bronchial glands, and malignant diseases of the lung. Pneumothorax from decomposition caused by the gas bacillus {B. aerogenes capsulatus.—Welch) is very rare, and is denied by some. The objections of Jaccoud, Fagge, Powell and others, which served to displace Laennec's sim- ple or essential pneumothorax as being unscientific in the sense of being non-perf orative, will have to be qualified so as to admit of a non-perforative form of pneumothorax in view of the evidence furnished by LeVy, May and Gebhart, Hamil- ton and others. Pneumothorax may occur in persons who are apparently in perfect health, and as such cases generally recover, the lesions which induce the pneumothorax may not be discoverable. Morbid anatomy.—In simple pneumothorax the pleural surfaces may present their usual glistening appearance. Usually there are the ordinary changes of acute or chronic inflammation. In perforative cases the opening in the mem- brane may be very difficult to find, but can usually be de- tected by forcing air into the main bronchus. There may be considerable lymph on the pleural surfaces and adhesions may or may not be present. Serum or pus may be -present in the pleural cavity if sufficient time has elapsed, since the perforation took place, for their accumulation. On opening into the pleural cavity, or on inserting a trocar, there may be a jet of air strong enough to blow out a lighted match. On opening the chest 'the lung is found compressed, col- lapsed, or carnified; the mediastinum and contents are dis- placed towards the opposite side. In acute pneumonic tuberculosis a sub-pleural necrotic area may perforate the pleura during a coughing spell, or, perforation may occur while the patient is at rest or asleep. 372 PNEUMOTHORAX. In the more chronic varieties of tuberculosis the involve- ment of the pleural membrane results in the formation of adhesions which are likely to prevent the development of pneumothorax, otherwise the occurrence of the latter condi- tion would be much more frequent in pulmonary tuberculo- sis. In rare cases a cavity, or a sinus leading from a cavity, may rupture through the visceral pleura. As a rule the affection is unilateral, and the left pleural cavity is involved more often than the right. (34:29, Fowler; 83:42, West; 7:1, Louis: 55:30, Walshe; 23:16, Powell; 2:1, Lebert, Regnaud, Wintrich, Weil. Laennec regarded the right side as most often affected.) The perforation, on either side occurs most frequently from the upper lobe than the lower lobe, the usual site being the mid-lateral aspect of the upper lobe. The middle lobe of the right lung is affected in a small proportion of instances. There is usually but one opening which is generally small, though it may be of con- siderable size. There may be several openings, and they may be confined to one lobe or may involve different lobes, In pneumothorax from punctured wounds the - gas will be of the same composition as the atmosphere; in perfora- tions of the visceral pleura the gas will at first be the same as in the alveoli: N=79.5, Co2=4.38, 0=16.0. If the open- ing is closed the oxygen will disappear and the carbonic acid and nitrogen may lincrease. If the effusion present is fetid there may be sulphuretted hydrogen gas pres- ent. In pneumothorax from punctured wounds or from the rupture of an emphysematous vessicle the opening may be- come closed and the gas absorbed in the course of four or five days. In tubercular pneumothorax there may be no effusion, and little or no inflammation. In the majority of cases, however, there will be a variable amount of pus of a yellow, greenish, or grayish color. It may be fetid. The effusion is usually serous at first, then sero-purulent and then purulent. It may be purulent from the first. Serous effu- sions may be clear, turbid, flaky, or blood-stained. The ex- udate may be gelatinous, or in some cases there may be PNEUMOTHORAX. 373 exudation of lymph without any fluid effusion. There is no constant relation between the duration of the condition and the amount of effusion. The effect of the collapse of the lung, resulting from the pneumothorax, on the progress of tubercular disease in the lung involved, has caused considerable discussion. In many cases there is, temporarily at least, modification or arrest of the tubercular process, though this is disputed by some observers. Clinical history.—The clinical history of pneumo- thorax will vary with its type and aetiological relations. The onset may be sudden with severe symptoms, or the pneumothorax may be gradually and quietly acquired with- out special disturbance. This difference in onset depends on the rapidity with which the air gains entrance to the pleural cavity, and on the functional activity of the lung involved If the lung is badly compromised by disease and is adherent to the parietal pleura, both of the above factors will operate in modification of the severity of the onset of the pneumothorax. In severe cases the patient may exper- ience a sensation as if something within the chest had given way; there will be severe pain in the back or in the upper part of the chest, and the patient may recognize the dis- placement of the heart. There may be severe shock with temporary heart failure, cold extremities, clammy perspira- tion, rapid pulse and respiration, and great mental distress. Dyspnoea is a marked feature, it is sudden and urgent, and is mainly due, according to Murphy, to the interference with the piston action of the diaphragm. The degree of dyspnoea will be in inverse ratio to the functional activity of the lung involved. Death may soon follow the collapse of the lung if the lung involved is the one chiefly depended on for respiration. In latent cases there may be no history of the onset, the pneumothorax developing without special disturbance, and being recognized only on physical examination. These cases are likely to occur in tubercular pneumothorax, and, according to West, may occur occasionally in healthy adults. 374 PNEUMOTHORAX. A recurrent variety of pneumothorax has been described by Goodhardt, West, and Furney. The following case illustrates a common development of pneumothorax in pulmonary tuberculosis: Man aged 36 years. Primary apical tuberculosis of the left lung. Secondary involvement of lower, left lobe. Temperature, 100.5° to 102°. The patient who had been well enough to be up and about, woke up one morning feel- ing weak and depressed. His temperature was 99°, and pulse 120: respiration somewhat more rapid than usual, but no special dyspnoea. Examination showed a pneumothorax of the left side. Two days afterward the temperature had regained its usual elevation. A slight effusion followed the occurrence of the pneumothorax, subsequently both air and fluid were absorbed. The patient died about eight months afterward. After an attack of pneumothorax the temperature may show a considerable drop if its range has been previously high. If it has not been high the drop will be less manifest. After the shock passes off the temperature will return to its previous range. Its subsequent range will depend largely on the nature of the changes in the pleura. In latent cases not followed by effusion, and where the air is rapidly ab sorbed, there may be no pyrexia. If pus forms in the pleural cavity there will be fever of a hectic type. According to Peters, and Williams, the temperature of the axilla on the affected side may be temporarily lower than that of the op- posite side. As pneumothorax occurs, in most instances, in cases of advanced lung disease, it may be regarded as an unfavor- able manifestation, although it may retard the progress of the lung lesion in some cases. If the mechanical results of a valvular opening be not too marked, or if the pleural inflammation or the pressure from effusion tends to close the opening, recovery from the pneumothorax may ensue. In cases not followed by effusion the gas may be absorbed in a few days. Of thirty-nine cases cited by Powell from post mortem records, the longest duration of life was twelve months, and the shortest, ten minutes. Pneumothorax occurring in a healthy person frequently ends in recovery. Tubercular cases die within a few weeks as a rule. West PNEUMOTHORAX. 375 places the mortality of pneumothorax at seventy per cent. Symptoms and diagnosis.—In severe cases, besides the subjective symptoms already detailed, the patient will be found sitting, leaning forward with widely dilated alae nasi, livid or cyanosed face, and unable to articulate clearly. After the intensity of the symptoms has passed off the intense dyspnoea may be relieved even though the respira- tory rate increase with the accumulation of air within the pleural cavity. With a respiratory rate of fifty-two per minute the patient may not be conscious of difficulty in breathing. (Walshe). On inspection in a case of general pneumothorax of considerable extent the side will be found to be immovable and enlarged. Its surface will be smooth from the absence of intercostal depressions. The shoulder is raised. The heart impulse may be displaced or may not be visable. If the pressure is great there may be bulging of the chest and distension of the superficial veins. In pneumothorax from perforation of the visceral pleura by an empyema, particu- larly in chronic empyema, and in cases due to perforation of the diaphragmatic pleura, if the opening is patent the side may be diminished in size or retracted. In pneumo- thorax circumscribed by pleural adhesions, enlargement may be slight, some expansion will be noticeable, and slight inspiratory retraction of seme interspaces may occur. The opposite side may develop compensatory enlargement, but the interspaces will show inspiratory recession. Palpation will determine the absence of the cardiac impulse from its usual situation. Its actual situation is usually evident, though it may not be. The displacement of the heart occurs suddenly, may be recognized by the patient, and is an important symptom whose relation to pneumothorax was first pointed out by Gaide in 1*28. Its sudden and early occurrence shows that it is due to the removal of the elastic-traction force of the collapsed lung and to the increased effect of the same force in the opposite lung, rather than to pressure. The liver and spleen may be depressed, the former may be as low as the iliac crest. Vocal fremitus is absent over the affected side except in 376 PNEUMOTHORAX. cases with pleural adhesions, when some fremitus may be felt. Percussion over the air-containing cavity gives a tym- panitic note which may be obtained beyond the mid-sternal line if the mediastinum and contents are much displaced. The note may be amphoric in quality; it may be hyper- resonant as in emphysema, of a flat quality similar to Sko- diac resonance, or, in rare instances, dull. — ''Muffled, tone- less, almost dull." (Walshe). It is claimed that with ex- treme degrees of tension the note may be markedly dull, but this appears to me to be doubtful, though the pitch is often considerably raised. Auscultatory percussion may furnish a note of strongly metallic character. Displace- ment of the heart, liver, and diaphragm may be recognized by percussion. In left-sided pneumothorax the area of praecordial dullness is usually obscured, and the normal stomach tympany will interfere with our recognizing down- ward displacement of the diaphragm. It is claimed that a cracked-pot sound may be obtained if the opening is patent, if so, it is a very inconstant sound. If fluid is present there will be dullness or flatness below, and tympanitic resonance above. The level of the dullness is more readily altered by a change in the position of the patient than it is in pleurisy. The upper level of a given amount of fluid may be much lower than in pleurisy, owing to the downward displacement of the diaphragm. Intercostal percussion may give a sense of fluctuation and a thrill. According to Walshe, the latter is most marked between the tympanitic and dull areas. Auscultation of the respiratory sounds shows them to be suppressed on the affected side. Distant, tubular, or amphoric breathing may be present. In circumscribed pneumothorax with a free opening there may be loud am- phoric breathing. Metallic rales may be present and metallictinkling(Laennec) may be heard on deep inspiration, coughing, speaking, swallowing, or may occur from the movement of the heart. The voice sounds are amphoric or metallic in quality, and may have an echo-like character. The so-called coin-sound or bell-sound {bruit d'uitain.__ PNEUMOTHORAX. 377 Trousseau) is a characteristic metallic echo which is one of the most constant signs of pneumothorax. It is produced by pressing a coin flat upon the chest, over the pneumo- thorax, and tapping it with another coin while the ear or stethoscope is applied to the opposite aspect of the cavity. If there is fluid in the pleural cavity we may have, in addition to the above signs, the succussion sound. (Hippocrates). This splashing sound has the peculiar metallic quality com- mon to the other signs of pneumothorax, and is caused by the splashing of liquid effusion in the air cavity. It is obtained by shaking or jolting the patient while the observ- er's ear is applied to the chest wall. The patient may himself recognize the sound. The diagnosis of pneumothorax is usually not difficult. The circumscribed variety is most likely to be confused with other conditions. If the percussion note is dull we may mistake pneumothorax for pleurisy. Diaphragmatic her- nia may simulate pneumothorax, but usually has a history of injury. Very large cavities in the lung may present metallic tinkling and the amphoric qualities of voice and respiratory sounds peculiar to rmeumothorax, but there is absence of dislocation of the organs, of the succussion splash unless there is an unusually large quantity of liquid in the lung cavity, and of the coin-sound, though the latter may be obtained in rare instances over a large cavity. Findlay has known emphysema to be mistaken for pneumo- thorax, and points to the bilateral nature of the former, also the absence of cardiac displacement, of the coin-sound, and to the less tympanitic percussion note as differential points. Pyopneumothorax subphrenicus (Leyden)—a condition in which an abscess cavity beneath the diaphragm receives air through a fistulous communication with an air-contain ing viscus (usually from perforating ulcer of the stomach)— may simulate pneumothorax, but can usually be recognized by the history. If the similarity in the voice and respira- tory sounds sometimes heard over the upper portion of the lung in eases of pleurisy, or over consolidated lung in pneu- monia, to those of pneumothorax, confuses us. we may 378 PNEUMOTHORAX. avoid mistakes by careful consideration of the general con- dition of the patient, the subjective symptoms of the dis- ease, and the location of its physical signs. Subjectively, an asthmatic paroxysm, or hysterical dyspnoea, may. re- semble pneumothorax, but physical examination readily removes any doubt. Treatment.—If the occurrence of pneumothorax is attended by severe pain, dyspnoea and mental distress, a hypodermic injection of morphia should be given. If severe shock results from the severity of the attack we may give hypodermic injections of ether. Strapping the chest has been recommended for the relief of pain and dyspnoea, and in some instances may possibly be of service. Cupping and venesection had been advised for the relief of the pres- sure on the right heart in cases associated with lung disease. These measures, however, are seldom advisable or necessary. Surgical measures are the only means of giving direct relief to the conditions resulting from pneumothorax. Va- rious procedures have been suggested. Potain recom- mends the substitution of sterilized air for the air and fluid in the pleural cavity, and good results have been claimed from it. Evidently such a measure must have a limited ap- plication. The surgical indications are much the same as in pleurisy. In traumatic pneumothorax from perforationjof the parietal pleura, surgical or otherwise, there is no special tendency for the air to accumulate in the pleural cavity, and if sepsis is not induced the air may become absorbed in a short time. The use of the Tell-0*Dwyer apparatus 'for maintaining respiration and preventing collapse of the lung may be of great service in cases of acute traumatic]pneumo- thorax. In pneumothorax from a valvular perforation^of^the visceral pleura there may be rapid accumulation of J air which produces great distress through collapse and com- pression of the lung and displacement of the intrathoracic organs. Aspiration of the air gives only temporary -relief, and it may be advisable to introduce a small cannula and leave it in until the opening in the lung has closed. This pneumothorax. h79 must be conducted under strict antiseptic precautions. If these cases are tubercular there will usually be some serous or sero-purulent fluid present, but the air may be the chief difficulty. A pure hydropneumothorax is very rare, but cases have been reported in association with hydatids of the chest. If aspiration is followed by increase in the pneumothorax and reaccumulation of the fluid, a free opening will probably be necessary. In tubercular hydro- or pyopneumothorax, if the fluid is slight in amount and does not tend to increase, and the patient is fairly comfortable, the case had better be let alone. If the amount of fluid is large and tends to increase, aspiration may be tried. If this is not satisfactory Godlee recommends passing two needles into the pleural cavity, one in front connected with a bottle of boric acid solution at a temperature of 100° F., and one behind, which is connected with an aspirator, or which may be used as a syphon. The pleural cavity is drained and washed out with the solution which is also removed, as far as possible. In all cases of pyopneumothorax, except some cases of tubercular origin, especially in cases showing septic effusion, incision and free drainage is indicated. According to Fraentzel, Senator, and others, the incision should be made close to the upper margin of the ninth rib just below the angle of the scapula. Irrigation may be advisable, but fre- quently is not best. In pneumothorax resulting from the perforation of variously situated abscesses into the pleural cavity, or where gas results from decomposition, the treatment should be on the same lines as in cases of empyema. HYDROTHORAX. Hydrothorax (dropsy of the pleura) is due to non-inflam- matory transudation of serous fluid into the pleural cavity. It occurs as a secondary process in many conditions. The fluid is clear, usually without floculi of lymph, and is mark- edly albuminous. The amount of albumen varies greatly, 380 hydrothorax. but according to analyses of Schmidt, Hoppe-Seyler, Leh- man and others, is greater than in dropsical fluid from other serous cavities. ^Etiology.-—Cardiac failure from chronic valvular disease, and Bright's disease are the most common causes of hydrothorax. Dropsical conditions due to cardiac failure from any cause may involve the pleural cavities. Hasmic dropsies may be associated with hydrothorax. Hydrothorax may be associated with hepatic cirrhosis, mediastinal tumor, or with aneurism. Intrathoracic tumor may cause hydro- thorax by pressure on the azygos veins. Morbid anatomy.—Any degree of effusion may be present. In recent effusions the pleural membranes retain their smooth, glistening appearance. In long-standing effusions the visceral pleura is usually slightly thickened, and is of a dull, grayish-white color, due to exudation which changes into a fibrous film of unequal thickness similar to that found in the peritoneum in chronic ascites (Fowler), and probably due to slight inflammation of the serous mem- brane from prolonged contact with the fluid. With long standing effusion and thickening of the pleura the lower lobe, or more, of the lung may be collapsed. The anterior margins of the lower lobe may be thinned out. In cases of general dropsy in persons with pleural adhesions of one side, the corresponding lung may be cedematous, and there may be hydrothorax of the other side. Clinical history.—Hydrothorax, like other dropsical developments, may be exceedingly irregular. It may, or may not, be present in conditions which should, apparently, affect all of the serous cavities alike, In renal disease it is usually bilateral, and we would expect the same condition in connection with heart diseases in which it is often uni- lateral, and almost always of greater extent on one side than on the other. Cases of general cedema, with or with- out ascites, may, or may not, be associated with hydro- thorax, and the latter may be present in eases which show little or no oedema. In nephritis following the infectious diseases, hydrothorax may come on suddenly in advance of symptoms of general oedema. HYDROTHORAX. 3H1 There will be a history of dyspnoea gradually or rapidly acquired. In chronic heart or kidney disease the gradual increase in the dyspnoea is likely to be attributed to the gradual failure of the heart, and if examination of the chest is neglected we may misinterpret the cause of the dyspnoea. Marked oppression, orthopnoea, or cyanosis maybe present. Again, a moderate degree of hydrothorax may add but little to the respiratory distress. This was illustrated in a case of cardio-renal disease in which several ounces of fluid had been aspirated from the left pleural cavity in order to relieve a severe dyspnoea. The dyspnoea was not relieved. The vascular tension being very high, a vaso-dilator was administered, and the dyspnoea was rapidly relieved and did not reappear to a severe extent although the fluid reaccu- mulated. Symptoms and diagnosis.—In many instances the gradual development of hydrothorax allows of the patient becoming accustomed to the interference with respiration. The physical inability incident to the chronic diseases with which hydrothorax is associated also modifies the evidence of its advent. The subjective symptoms are therefore less marked and more liable to be overlooked than they other- wise would be. The physical signs are those of fluid in the pleural cav- ity, though because of the absence of any lymph deposit and of the lesser density of the fluid they are not so pro- nounced as in cases of sero-fibrinous effusions. The side of the chest is usually not enlarged. The heart is displaced but little, and not at all if there is equal bilateral effusion. Vocal fremitus is absent. The percussion note is dull but not so absolutely flat as in sero-fibrinous effusion. Whis- pering pectoriloquy may be heard. Tubular breathing can usually be heard, and the fine rales of oedema are usually heard in the lower portion of the lung on deep inspiration. The clinical history of the case will establish the differ- ential diagnosis. Treatment.—The general treatment of cases in which hydrothorax occurs is not to be considered here. As far as the effusion is concerned it should be aspirated in any case 3*2 HEMOTHORAX. of chronic heart or kidney lesion when there is sufficient fluid to interfere with the proper performance of respiration. In some cases of chronic heart disease hydrothorax may be the particular element which interferes with re-establishing the circulation. The same precautions should be observed as in aspirating sero-fibrinous effusions. HEMOTHORAX. The term haemothorax is applied to a collection of blood in the pleural cavity. The haemorrhagic forms of sero- fibrinous effusions which may occur in connection with Bright's disease, cirrhosis of the liver, pneumonia, malig- nant types of specific fevers, and with cancer or tuberculosis of the lungs or pleurae are not included under the designa- tion of haemothorax. Etiology.—Injuries of the chest resulting in laceration of the pleura or lung, fractured ribs, injury of the inter- costal or internal mammary arteries, rupture of an intra- thoracic vein may cause haemothorax. Rupture of an intra- thoracic aneurism may cause sudden and fatal hagmothorax. A pulmonary infarction may rupture into the pleural cavity. Scurvy, purpura, and conditions attended by haemorrhagic diathesis may be associated with haemothorax. Fatal haemothorax has occurred from the rupture of an aneurism of the internal mammary artery after operation for pneumo- thorax (Fowler). Clinical history.—In traumatic cases a great amount of blood may collect in the pleural cavity in a short time, and will be attended by marked symptoms of haemorrhage. In other cases the bleeding may be slow, and no very active symptoms will develop. The rupture of an aneurism may precipitate an extensive and rapidly fatal haemorrhage pre- ceded by no premonitory symptoms such as may occur when an aneurism perforates the trachea or oesophagus, when there may be attacks of moderate haemoptysis. Syncope, pallor, coldness of the extremities, rapid breathing, labored dyspnoea, subnormal temperature, and feeble, rapid pulse mark the development of haemothorax. In traumatic cases the blood usually coagulates, the CHYLOTHORAX. 3*3 serum becomes absorbed, and the clot may finally absorb also. If septic infection occurs there is acute inflammation and empyema. Blood may remain for a long time unco- agulated in the pleural cavity. Symptoms and diagnosis.—Aside from the subjective symptoms, which may not be very distinctive in cases of slow bleeding, the signs of effusion beginning at the base and extending upward, particularly when following the occurence of an injury, are most important. Friction sounds are absent. If the blood has coagulated, the per- cussion note is hard and flat. The area of dullness may indicate a much larger effusion than is actually present. A previous diagnosis of intrathoracic aneurism will assist the di- agnosis in rapidly developed cases not associated with injury. Treatment.- When the source of the haemorrhage is not known, the treatment should be expectant. It is not expedient to remove the fluid unless the severity of the dyspnoea requires it, and then only sufficient fluid should be removed to give relief to the symptoms. In traumatic cases, if the bleeding has been comparatively slight and has ap parently ceased, the treatment should be expectant. Where injuries involve blood vessels which can be located, they should be tied at once, and if necessary a portion of one or more ribs should be removed in order to get at the point of haemorrhage. CHYLOTHORAX. Chylothorax (chylous pleurisy) is a collection of chylous fluid in the pleural cavity. The effusion may be found in the pleural cavity alone or it may occur in connection with chylous ascites. Chylothorax has been described as a form of pleurisy, but as the effusion is non-inflammatory in na- ture it should properly receive an individual description (Fowler). Chylothorax is usually caused by obstruction or rup- ture of the thoracic duct. Obstruction of the duct at its entrance into the left subclavian vein by narrowing, thickening, thrombosis, tubercular disease, or new growths' may cause chylothorax. 3*4 CHYLOTHORAX. When there is obstruction, the thoracic duct may be dis- tended in its entire course, and the lymphatics of the lungs, pericardium, and pleurae may be distended. If there is perforation of the duct without obstruction the lymph- atics may not show such distension. The pleural mem- branes may be white and opaque; the pleural lymphatics milky and arborescent. The lungs may present collapse, fibrosis, tubercular or other tissue changes. The fluid may be present in one or in both pleurae. It varies greatly in amount and contains fat in the form of an emulsion. Chemically it contains albumen, globulin, fat and inorganic salts; while microscopically there will be found small refractive granules and a few leucocytes. Ac- cording to Sidney Martin the specific gravity of the fluid is about 1.022, and it consists of about ninety-one per cent, of water, and contains from eight to nine per cent, of solids, the fat amounting to about one or two per cent. The clinical history is such as may pertain to the nature of the primary lesion and is in no way distinctive as the nature of the effusion does not influence the character of the symptoms in any special way. Emaciation does not appear to be marked even in those cases where considerable fluid has been removed by repeated aspirations. Dyspnoea may be marked, and pain may be present when there is considerable effusion. The pulse is but slightly accelerated, and the temperature is usually near the normal. The physical signs are those of pleural effusion and are not specially indicative of the nature of the fluid. The diagnosis will rest on exploratory puncture. The prognosis, while influenced by the nature of the primary lesion, is generally unfavorable, though according to Cayley it is possible for anastomosis with the right lymphatic duct to be established in cases of obstruction slowly developed. The treatment of chylothorax is symptomatic. Aspir- ation should be performed when there is sufficient fluid to cause the patient to suffer, 385 TUMORS OF THE PLEURA. Tumors of the pleura may be primary or secondary. Primary new growths are rare in the pleura, but may occur in the form of fibroma, sarcoma, or the so-called endothelial cancer. Secondary growths are not infrequent as the result of extension from other tissues. They are usually cancerous or sarcomatous. Secondary tumors of the pleura usually result from infiltration of the pleural membranes from malignant disease of the lungs, mediastinum, or of the chest walls. Secondary involvement of the pleura is frequent in cases of carcinoma of the breast, but may occur when the primary lesion is situated in any portion of the body. There has been some discussion over the nature of primary cancerous tumors of the pleura, but as they cannot be distinguished histologically from other cancerous growths it is not worth while, from a clinical standpoint, to discuss the question. They may form flat, multiple nodules of a white color, connected by bands similar in structure. They may show clusters of epitheliod cells, with round or spindle-shaped nuclei, lying in a fibrous stroma. Alveoli may present at the periphery of, or throughout, the growth, and may be lined with cylindrical or cuboidal epithelial cells. The growth may involve the bronchial glands, the mediastinal tissues, or may extend along the peribronchial tissues into the lung. Any variety of sarcoma may occur in the pleura, but the round-celled variety is most common. Sarcoma may occur as large masses involving chiefly the parietal pleura, with a soft infiltration of the pleural membrane, or there may be a thick, fibrous layer involving the entire pleural membranes. Secondary involvement may occur in any or all of the adjacent tissues. Tumors of the pleura may be essentially fibromatous, but most cases of this kind are probably examples of mixed sarcoma and fibroma. The clinical history of tumors of the pleura may cover a period ranging from two to three months to one or more years. The course of primary tumors is generally rapid 386 TUMORS OF THE PLEURA. and limited by months rather than years. The onset is in- sidious as a rule. Pain is usually slight or absent, though it may be severe and persistent. Cough and dyspnoea on exertion are usually present. Malaise and loss of flesh may be early symtoms, but extensive emaciation is not reached. Moderate, irregular fever is present. The fever is usually not great unless some complicating condition is pres- ent. Albuminuria may be present. CEdema of the limbs, and gastric derangement and vomiting may be present. If the patient has been under treatment there may be a history of aspiration of albuminous, bloody serum, or of some other surgical procedure for the relief of the primary disease in the breast or other tissues. Pleural effusion is frequently present and the physical signs of tumors of the pleura are very similar to those of effusion. The chest may be rounded, bulging, or retracted. The heart apex may or may not be displaced. Vocal fremi- tus may be diminished or absent, as may, also, the vocal and respiratory sounds. Tumors of the pleura are chiefly confounded with pleu- risy, from which they differ mainly by their slow onset and absence of marked pain or fever. Paracentesis may show the absence of fluid, or if fluid is obtained, its removal is not followed by disappearance of the dullness, and by reposi- tion of the heart if the latter is displaced. A haemorrhagic effusion is not uncommon in connection with tumors of the pleura, while it is somewhat rare in tuberculous or pneumo- coccus pleurisy. Pressure symptoms are usually absent un- less other structures than those of the pleura are involved. In some cases of chronic tubercular pleurisy the symptoms may much resemble the early history of tumors of the pleura, and the diagnosis may be difficult in this stage. The treatment of tumors of the pleura is symptomatic. If fluid is present in the pleural cavity it should not be re- moved unless necessary, as its removal gives little or no re- lief, may be followed by distressing dyspnoea, and is usually followed by reaccumulation. INDEX. Abscess, of the heart, 21 of the lung, 257 of the pleura, 358 sub-phrenic, 263, 264 Actinomycosis of the lungs, 315 aetiology of, 315 clinical history of, 316 morbid anatomy of, 316 symptoms and diagnosis of, 317 treatment of, 318 Acute endocarditis, 39 Adonis vernalis in endocarditis, 101 Air embolism, 206 Angina pectoris, 132 Adams-Stokes syndrome in, 136 cardiac asthma in, 136 cases of 134, 135 clinical history of, 133 nature of, 132 occurrence of, 133 syncope anginosa in, 136 case of, 136 treatment of, 139 Aneurism of the heart, 23 Angulus Ludovici 192, Anthracosis, 249 Aortic regurgitation, 66 capillary pulse in, 68 cases of, 69, 70 murmur of, 68 prognosis in, 67 pulse of, 68 sequences of, 66 symptoms of, 67 Aortic stenosis, 62 cases of, 64 compensation in, 62 murmur of, 64 sequences of, 62 symptoms of, 63 Arterial supply of heart, 131 Aspergillus, 318 Aspiration, in pleurisy, 350, 356 in pericarditis, 18 Asthma. 177 aetiology of, 177 case of, 178 clinical history of, 180 dyspnoea in, 182 morbid anatomy of, 179 sputum in, 180 symptoms and diagnosis of, 181 treatment of, 183 Asystolism, 119 Atelectasis, 195 Bacelli'ssicn. 347, 362 Barrel-shaped chest, 191 Baths in cardiac dilatation. 127 [ Bellingham pulse, 68 Bell-sound, 376 Bicycle, use of in cardiopathies, 128 Bilious pneumonia, 223 case of, 224 Bradycardia, nature and cause of, 144 treatment of, 145 Bronchial asthma. 177 Bronchial stenosis, 175 aetiology of, 175 clincal history of, 175 morbid anatomy of, 175 symptoms and diagnosis of, 176 treatment of, 176 Bronchiectasis, 171 aetiology of, 171 case of, 172 clinical history of, 172 morbid anatomy of, 171 sputum of, 172 symptoms and diagnosis of, 173- treatment of, 173 388 Bronchiolitis, 152 aetiology of, 152 case of, 153 clinical history of, 157 morbid anatomy of, 154 symptoms and diagnosis of, 163 treatment of, 167 Bronchitis, acute, 152 aetiology of, 152 clinical history of, 156 morbid anatomy of, 153 sputum in, 156 symptoms and diagnosis of, 162 treatment of, 166 Bronchitis, chronic, 153 aetiology of, 153 clinical history of, 161 morbid anatomy of, 155 sputum in, 162 symptoms and diagnosis of, 164 treatment of, 169 Bronchitis, fibrinous, 153 aetiology of, 153 cases of, 158, 160 clinical history of, 158 morbid anatomy of, 154 sputum in, 161 symptoms and diagnosis of, 164 treatment of, 168 Broncho-pneumonia, 237 Bronchorrhoea, 162, 170 Brown atrophy of the heart, 31 Brown induration, 200 Brown oedema, 200 Bruit d'airain, 376 Byssinosis, 250 Cactus in endocarditis, 100 Caffein in endocarditis, 99 Capillary bronchitis, 151 Cardiac abscess, 21, 23 Cardiac aneurism, 23, 55 Cardiac arrhythmia, 145 Cardiac asthma, 136, 177 •Cardiac degeneration, 28 aetiology of, 28 brown atrophy in, 31 INDEX. clinical history of, 31 fatty, 29 granular, 29 symptoms and diagnosis of, 32 treatment of, 36 Cardiac dilatation, 115 aetiology of, 115 atrophic, 115 baths in, 127 cases of, 116 Cheyne-Stokes breathing in, 120 climbine method in, 12(i clinical history of, 119 gallop rhythm in, 121 hypertrophic, 115 morbid anatomy of, 117 passive exercise in, 126 primary, 115 pulsus bigeminus in, 122 Schott method in, 123 secondary, 115 simple, 115 resistance movements jn, 126 treatment of, 122 Cardiac hypertrophy, 111 aetiology of. Ill concentric, 110 excentric, 110 • morbid anatomy of, 112 pulse in, 114 simple, 110 symptoms and diagnosis of, 113 Cardiac murmurs, cause of, 59 diagnosis of endo-from exocar- diac, 60 diagnosis of organic from anor- ganic, 60 Cardiac thrombosis, 56 Cardiac neuroses, nature of, 129 Casts in fibrinous bronchitis, 154, 159 Catarrhal pneumonia. 237 Charcot-Leyden crystals, 180 Chorea and endocarditis, 54 Chronic endocarditis, 53 Chronic pneumonia, 248 Chylothorax. 383 aetiology of, 383 INDEX. 389 clinical history of, 384- nature of fluid in, 384 prognosis in, 384 signs of, 384 treatment of, 384 Cirrhosis of the lung, 248 Climbing method in cardiac dilata- tion, 126. 128 Coin-sound, 376 Compensatory hypertrophy, of lung, 370 of heart, 112 Compressed air baths in emphysema, 194 Consumption Of the lung, 269 Convallaria in endocarditis, 100 Cor hirsutum, case of, 4 Corrigan's pneumonia, 250 Corrigan's pulse, 68 Crepitant rale in pneumonia, 228 Croupous bronchitis, 153 Curshman's spirals, 180 Damoiseau's curve, 345 Delirium cordis, 147 case of, 148 Degeneration of heart, 28 Diaphragmatic pleurisy, 333, 358. 363 Digitalis, in acute endocarditis, 50 in cardiac degeneration, 37, 38 in chronic endocarditis, 94 in myocarditis 27 in pericarditis, 20 in pneumonia, 234, 235 Digitalin, 97 Dilatation, of heart, 115 of lungs, 186 Dropsy in endocarditis, 104 Dust phthisis, 253 Dyspeptic asthma, 177 Dyspnoea, in asthma, 182 in endocarditis, 105 in pneumonia, 221 in pneumothorax, 373 in pulmonary infarction, 207 Elastic tissue, 292 Embolic pneumonitis, 205 Emphysema, pulmonary, 186 Empyema, 356 loculated, 358 necessitatus, 362 • pulsating, 362 tubercular, 360 Endocarditis1, acute, 39 aetiology of, 39 aortitis in, 47 case of, 43 clinical history of-, 42 infectious, 40, 42, 43, 47, 51 malignant, 40 morbid anatomy of, 40 nature of. 39 symptoms and diagnosis of, 4t treatment of, 49 ulcerative, 41 valvular localization of, 45 Endocarditis, chronic, 53 adonis in, 100 aetiology of, 53 caffein in, 99 cactus in, 100 Cheyne—Stokes breathing in, 59 clinical history of, 56 convallaria in, 100 cyanosis in, 57 digitalis in, 94 dyspnoea in, 57 'morbid anatomy of, 54 oedema in, 58 orthopnoea in, 57 pain in, 59 palpitation in, 59 spartein in, 100 strophanthus in, 98 strychnia in, 100 symptoms and diagnosis of, 62 treatment of, 87 Endocarditis, foetal, 56 Enlargement of the heart, 109 Epidemic pneumonia, 223, Excission of ribs in empyema, 365, 367 Exocardial murmurs, 60 390 INDEX. Fat embolism, 206 Patty degeneration of heart, 29 Infiltration of heart, 28 Fibrinous pericarditis, 3 Fibrinous pleurisy, 328 aetiology of, 328 case of, 331, 334 clinical history of, 330 morbid anatomy of, 329 symptoms and diagnosis of, 332 treatment of, 334 Fibrinous pneumonia, 215 Fibroid phthisis (Sir A. Clark), 254 Fibrosis of the lung, 248 Fibrous myocarditis, 22 Foetal endocarditis. 56 granular degeneration of, 29, 31, 32, 34, 37; case of, 35 hypertrophy of, 110 innervation of, 129 palpitation of, 146 neuroses of, 129 Heredity in tuberculosis, 270 Hydatids of the lungs, 319 aetiology of, 319 clinical history of, 321 morbid anatomy of, 320 symptoms and diagnosis of, 322 treatment of, 323 Hydropneumothorax, 369 Hydrothorax, 379 aetiology of, 380 clinical history of, 380 morbid anatomy of, 380 symptoms and diagnosis of, 381 treatment of, 381 Hyperaemia, compensatory, 199 Hypnotics in endocarditis, 107 Hypertrophy, of heart, 100 of lungs, 193 Hypostatic pneumonia, 200 Induration, brown, of lung, 200 Infarction of the lung. 205 Infection, tubercular, by inhalation, 271 by inoculation, 272 Influenza pneumonia, 224 case of, 224 Interlobular emphysema, 186 Internal mammary artery, 18 Interstitial emphysema, 186 Interstitial endocarditis, 55 Interstitial pneumonia, 248 Intrapleural tension, 369 Intratracheal injections, 306 Irrigation of pleura, 367 Latent pneumonia, 223 Lobar pneumonia, 215 Lobular pneumonia, 237 aetiology of, 237 air embolism of, 206 cases of, 241 clinical history of, 240 Gallop rhythm, 149 Gangrene of lung, 263 Gerhardt's change of pitch, 260 Granular degeneration of heart, 29 Guaiacol in tuberculosis, 304 Hay asthma, 76, 179 Haemoptysis, 209 aetiology of, 209 cases of, 210, 211, 212 clinical history of, 210 morbid anatomy of, 210 symptoms and diagnosis of, 212 treatment of, 213 Hemothorax, 382 aetiology of, 382 clinical history of, 382 symptoms and diagnosis of, 383 treatment of, 383 Heart, abscess of, 21 arrhythmia of, 145 asystolism of, 119 arterial supply of, 131 brown atrophy of, 31 dilatation of, 115 displacement of in pleurisy, 343 enlargement of, 109 fatty degeneration of, 29, 30, 31, 33; case of, 34 fatty infiltration of, 28, 30, 31, 32, 36; case of, 33 INDEX. 391 morbid anatomy of, 238 symptoms and diagnosis of, 242 treatment of, 245 Lungs, abscess of, 257 anthracosis of, 249 atelectasis of, 195 brown induration of, 200 brown oedema of, 200 byssinosis of, 25» cancer of, 323 carnified, 200 cavities in, 26\ 280, 294 congestion of, 199 chaliosis of, 250 dilatation of, 186 emphysema of, 356 fat embolism of, 2 »6 ' fibrosis of, 248 gangrene of, 262 hydatids of, 319 hypertrophy of, 193 hypostatic pneumonia of, 200 hypostatic congestion of, 199 infarction of, 205 mycosis of, 318 cedema of, 202 phleboliths in. 206 siderosis of, 250 silicosis of, 250 splenization of, 197 syphilitic gumma of, 249 syphilitic sclerosis of, 248, 249. 254; case of, 254 tuberculosis of, 269 Mediastinitis, 6 Metallic tinkling, 26C Migratury pneumonia, 223 Mitral regurgitation, 76 case of, 79 compensation in, 76 dynamic, 78 murmur of, 78 pulse of, 77 relative, 76, 78 sequences of, 76 symptoms of, 76 urine in, 77 Mitral stenosis. 71 case of, 75 in relation to pregnancy, 72 pulse in, 73 sequences of, 71 symptoms of, 72 thrill of, 73 tuberculosis of lung in, 72 Mycosis pulmonum, 318 secondary aspergillo, 319 Myocarditis, 21 acute circumscribed, 23 acute diffuse, 24 aetiology of, 21 chronic circumscribed, 24 chronic diffuse, 24 clinical history of, 23 delirium cordis in, 25 morbid anatomy of, 22 symptoms and diagnosis of, 23 syphilitic, 23 treatment of, 27 varieties of, 21 Murmurs, anaemic, 60 anorganic, 60 cardio-respiratory, 295 disappearance of, 61 exocardial, 60 i organic, 60 ' Nasal irritation in asthma, 179 GMema of the lungs, 202 sputum in, 203 (Edema, cardiac, treatment of, 104 Oxygen gas in pneumonia, 235 Palpitation, cardiac, 146 in endocarditis, 101 Paracentesis, pericardii, 18 thoracis, 355 Passive exercise in cardiopathies, 126 Peptic asthma, 178 Pericardial adhesions, 14 Pericardial effusion, 10 Rotch's sign of, 10 symptoms and diagnosis of, 10 treatment of, D 392 INDEX. Pericardial friction, 18 Pericardium, adherent, 6 case of, 16 carcinoma and sarcoma of, 5 tuberculosis of, 5 Pericarditis, 1 aetiology of, 1 chronic, treatment of, 19 clinical history of, 7 enlargement of heart in, 6 fibrinous, 4; case of, 8 haemorrhagic, 5 morbid anatomy of, 2 pneumonia in, 226 purulent, 4 sero-fibrinous, 3 symptoms of, 8, 10, 14 symptoms of effusion in, 10 % treatment of, 16 treatment of effusion in, 17 tuberculous, 5 sicca, 3 Peripleuritis, 364 Phthisis, 2ft9 fibroid (Sir A. Clark), 254 Plastic bronchitis, 153 Pleura, abscess of, 3p8 adhesion-t of, 333 inflammation of, 327 tuberculosis of, 3 51 tumors of, 385 Pleurisy, 327 chronic, 361 diaphragmatic, 333, 358, 363 . fibrinous, 328 friction sounds in, "33 purulent, 356 sero-fibrinous, 335 Pleuro-pericardial friction, 9 Pneumoconiosis, 248, 250 case of, 253 Pneumomycosis, 318 Pneumonia, 215 aetiology of, 215 bacteriology of, 216 clinical history of, 220 crisis in. 222 crepitant rale in, 229 complications of, 22(5 cyanosis in, 230 death in, 227 irregular forms of, 222 mixed infections in, 225 morbid anatomy of, 217 pericarditis in, 225 septic, 225 sputum in, 221 symptoms and diagnosis of, 22* treatment of, 231 types of, 223, 224 unfavorable symptoms in, 230 Pneumonia, bilious, 223 broncho, 237 r catarrhal, 237 cirrhotic. 248 , Corrigan's. 250 chronic, 248 croupous, 215 epidemic. 223 embolic, 205 fibrinous, 215 hypostatic, 200 influenza, 224 interstitial, 248 latent, 223 lobar, 215 lobular, 237 primary parenchymatous. 249 migratory, 223 septic, 224 serosa, 202 subacute indurative, 249 tubercular, 240, 283, 284. 290. 291 Pneumothorax, 369 aetiology of, 369 cause of dyspnoea in, 373 case of, 374 clinical history of, 373 coin-sound in, 376 nature of gas in, 372 side affected in, 372 symptoms and diagnosis of .375 INDEX. 393 treatment of, 378 Praecordial pain, 132 in endocarditis, 102 Pregnancy, effect of in valvular lesions 92 Pressure effects in pleurisy, 343 Prognosis of valvular lesions, 86 Protozoic infection, 318 Pseudo-angina pectoris, 137 Pseudo-tuberculosis, 318 Pulmonary abscess, 257 aetiology of, 257 case of, 259 clinical history of, 258 morbid anatomy of, 257 multiple pyaemic, 258 sputum in, 258 , symptoms and diagnosis of, 259 treatment of, 262 Pulmonary apoplexy, 205 Pulmonary collapse, 195 aetiology of, 195 _ clinical history of, 196 morbid anatomy of, 196 ymptoms and diagnosis of, 196 treatment of, 198 Pulmonary congestion, 199 aedology of, 199 • clinical history of, 201 forms of, 199 morbid anatomy, of, 200 sputum in, 201 symptoms and diagnosis of, 201 treatment of, 201 Pulmonary embolism, 205 Pulmonary emphysema, 186 etiology of. 186 acute vesicular, 190 case of, 191 clinical history of, 190 forms of, 18fi general, 189 interlobular, 187 local, 189 morbid anatomy of, 187 senile, 189 symptoms and diagnosis of, 191 treatment, 194 vesicular, production of, 187 Pulmonary fibrosis, 248 aetiology of, 248 cases of, 249, 252 clinical history of, 251 haemoptysis in, 251 localized, 254 morbid anatomy of 250 nature of, 248 symptoms and diagnosis of, 252 syphilitic, 249, 254 treatment of, 255 Pulmonary gangrene, 263 aetiology of, 264 clinical history of, 266 diffuse, 266 morbid anatomy of, 265 sputum in, 266 symptoms and diagnosis of, 267 treatment of, 268 Pulmonary infarction, 205 aetiology of, 205 case of, 208 clinical history of, 207 morbid anatomy of, 206 nature of, 205 sputum in, 207 symptoms and diagnosis of, 207 treatment of, 208 Pulmonary mycosis, 318 Pulmonary cedema, 202 aetiology of, 202 aeute case of, 203 clinical history of, 202 crepitating rales of, 203 morbid anatomy of, 202 nature of, 202 sputum of, 203 symptoms and diagnosis of, 203 treatment of, 204 Pulmonary thrombosis, 205 Pulmonary tuberculosis, 269 aetiology of, 270 antiseptic medication in, 304 bacilli in, 291 cavities in, 280, 294 394 INDEX. climatic treatment in, 308 clinical history of, 28! i complications of, 296 decrease of, 269 effect of heart disease in, 27 extent of, 269 fever in, 287, 311 fresh air treatment in, 307 general treatment of, 300 haemoptysis in, 286, 297, 313 hereditary transmission of, 270 high altitudes for. 309 inhalations in, 305 infection in, 271 morbid anatomy of. 276 nervous symptoms in, 28* night sweats in, 287, 312 points of invasion in, 279 prophylaxis in, 298 pulse in, 287 sanatorium treatment in, 307 special treatment of, 311 sputum in, 291 symptoms and diagnosis of, 288 treatment of, 298 Pulmonic regurgitation, *1 "audible capillary pulse" in, 81 causes of, 81 murmur in, 81 relative, 81 signs of, 81 Pulmonic stenosis, 7,9 case of, 80 effects of, 79 murmur of, 80 symptoms of, 80 Pulsus alternans, 145 Pulsus higeminus, 146 Pulsus differens, 74 Pulsus paradoxus, 14 Pulsus rarus, 144 Pulsus trigeminus, 146 Puncture, exploratory, in pleurisy, 349 Purulent Pleurisy. 356 etiology of, 356 cases of, 360 cerebral abscess in, 368 character of pus in, 358 clinical history of, 359 fetid, 363 irrigation in, 367 morbid anatomy of, 357 pulsating, 362 resection for, 367 symptoms and diagnosis of, 362 subphrenic abscess in, 363 treatment of, 364 >■ tubercular, 360 Putrid bronchitis, 156, 162 Pyopericardium, incision for, H) Pyopneumothorax, 369 Pyopneumothorax subphrenicus, 377 Rales, crepitant, 229 of cedema, 203 redux, 230 Resistance movements in cardiac dis ease, 126 Resonance, cracked-pot, 260 Skodiac, 342 Rotch's sign, 10 Schott method in cardiac, dilatation, 123 Septic pneumonia, 225 case of, 225 Sero Fibrinous Pleurisy. 335. aetiology of, 335 BacellTs sign in, 347 bacteriology of, 335 c'inical history of, 339 course of, 341 dangers of puncture in diagnosis of localized, 34* latent type of, 340 letter S curve in, 345 morbid anatomy of, 337 Skodiac resonance in. 345 symptoms and diagnosis of. 342 treatment of, 349 when to puncture in, 352 Siderosis, 250 Silicosis, 250 Skodiac resonance, 345 INDEX. 39") Skoda, veiled puff of. 173 Spartein in endocarditis. 100 Spasmodic asthma, 177 Splenization of lung, 197, 199 Sputum, in asthma, 180 in acute bronchitis, 156 boiled tapioca, 180 in bronchiectasis, 172 in bronchorrhoea, 162 from cavities, 201 in chronic bronchitis. 162 elastic tissue in. 292 fetid. 162 num'ular, 291 in plastic bronchitis, 161 in pneumonia, 221 prune juice, 221 in pulmonary abscess, 258 in pulmonary congestion, 201 in pulmonary gangrene, 266. in pulmonary infarction, 207 in pulmonary cedema. 203 in tuberculosis, 291 Streptothrix pseudo-tuberculosa, 318 Strophanthus in endocarditis, 98 Strychnia, in endocarditis, 100 in pneumonia, 234 Suffocative catarrh. 151 Subphrenic abscess, 363, 364 Syncope anginosa, 136 Syncope and cyanosis in endocarditis, 103 Syphilitic fibrosis of lung, 249, 254 syphilitic myocarditis, 23 Tachycardia, 141 in Grave's disease, 142 paroxysmal. 143 toxic, 142 treatment of, 143 Thrombosis of heart. 56 Tobacco, effect of on heart. 142 Tremor cordis, 147 Tricuspid regurgitation. 84 associations of, 84 effects of, 85 epigastric pulsation in, 85 jugular pulsation in, 85 murmur of, 86 signs of, 85 Tricuspid stenosis, 82 associations of, 82 case of, 84 diagnosis of, 83 murmur of, 83 symptoms of, 83 Tubercular empyema, 360 Tubercle baccillus in pulmonary tuber- culosis, 270, 290. 291 in sero-fibrinous pleurisy, 335, 336 Tuberculin, 311 Tuberculosis of the lung, 269 of the pericardium, 5 of the pleura: case of, 331 Tumors of the lungs. 323 aetiology of, 324 clinical history of, 325 morbid anatomy of, 324 symptoms and diagnosis of, 325 treatment of, 326 Tumors of the Pleura. 3*5 etiology of, 385 clinical history of, 3*ii , morbid i natomy of, 385 nature of, 385 symptoms and diagnosis of. oW treatment of, 386 Tnrtl^ lung, 171 Toxic asthma, 177. 178 Uraemic asthma, 178 \ Veiled puff, 173 Venesection in pneumonia, 234 Wintrich's change of pitch. 261) \ NLM051107336