FCREWORJ Persistent cavities (Resthoehle) in the chest have taxed the skill of surgeons since the early days of chest surgery. It is unusual for any one sura on to have an extended series of these cases, Bernhard has reported here the results obtained by using HELLER *s Lattice Plastic operation. 100 of the cases followed empyema and 24 of them followed hemothorax. They include cases of fairly recent origin and older cases, even one of 25 years duration. It is unfortunate that all the original illustrations could not be reproduced. However, the loss of X-ray films by fire and water damage, hasty removals and temporary storage incident t• developments during the war are completely under- standable , The experience recorded in these two articles has been enlarged since they were written with eoually successful results. HARRI J, ALVIS Commander, Medical Corps U, S. Navy Surgical Clinic of the University of Giessen Director: Prof, Dr, BERNHARD THE RESIDUAL CAVITY OF THE HEMOTHORAX by Prof. Dr. Fr, BERNHARD With 1+ Illustrations 1r anslation prepared by: U, S, Naval Technical Unit, Europe, (Medical Section) Office of Naval Adviser Office of Military Government (U, S,) 1 During the first World War, special interest was paid to penetrating gunshot wounds of the chest. Based on the fundamental works if SAUFRBRUCH concern- ing thoracic surgery, considerable improvement in the treatment of this serious injury was obtained, and general instructions for the treatment were establish- ed whidh are still correct. This is also the case with the hemothorax which is rather regularly associated therewith in various degrees. Concerning this clinical picture, in the first years of the World War I, the necessity of removing each accumulation »f blood in the thorax by repeated punctures in order to avoid serious complications, even when it did not cause any immediate threat to life by displacement phenomina, was observed too infrequently. The earlier apprehension concerning this treatment proved to be unfounded. Hitherto, the treatment of the hemethorax was improperly considered to be concluded with the relief of the immediate danger and no longer to be the subject of medical treatment or surgical action. is a consequence the possible formation of thick callus in the pleural space has been observed. During World War I, it was established by MORITZ, when he summarized numerous gunshot wounds of the chest, that the final result of the hemorrhage into the pleural cavity were unsatisfactory, and that scars and wheals could be the cause of considerable and manifold pains with a great number of soldiers. By careful examination he came to the astonishing con- clusion that pleuraempyemas show a better prognosis after the surgical drainage of the pus chan the non- treated and non-infected hemothoraces, With chis statement one was content. An explanation of this contradictory circumstance did not occur. Therefore, the way could not be found by which better results could be obtained with the hemothorax. From my exoeriences, the cause of the unsatis- factory results is to be seen with the subsequent con- ditions of numerous penetrating injuries of tne chest in a hithertp_un£bseryed_clj_nical_picturthe causes of which have been known for a long time. With more than 20 wounded soldiers I was able to prove by X-rays as well as by operative findings, that in spite of previous repeated puncture, astonishingly large cavities are often hidden in the so called "callosities11 follow- ing an effusion of blood into the thoracic cavity, (in, i). This residual_cayitx_f»11nwing_a_hemothorax is almost regularly filled with thick clumps of old remnants of fibrin. It contains only a little brownish liruid and consequently escapes diagnosis by the simple test puncture. The wall consists of wheals of several centimeters of thickness, and is covered with old and decaying layers of fibrin. The clinical picture can be considered as a result of the pleuritis wh?ch occurs after hemorrhages into the pleural cavity. On account of the chronic processes of inflammation and the phenomena of disintegration (decay) in the old fibrin clumps, toxic albuminous substances enter the circulatory system and cause noticeable abnormal varia- tions which continue for a long time. They cannot be 4514 4 G Is - Illustration 1 Big, coatlike callus, one year after injury through shell splinter, with additional hemothorax, A big hemothorax residual cavity has been found and closed by thoracoplasty, a) Condition before the plastic, b) X-ray after plastic gives an imagination of the extension of the cavity. 2 removed by medical hospital treatment even this ex- tended for a long time. Only by an active procedure or surgical treatment was success achieved in saving such soldiers from a chr&nic disability and to obtain either a healing #r a complete fitness for military service * I therefore consider it my duty to call attention to this as beet of disease and to point out its jsymp- toms. For this purpose I will not give a detailed re- production of the numerous hospital reports since the observations correspond to each other with a certain monotony, I consider it most impressive to describe only the first observation with wh?«h I found, by chance a great cavity in the pleura after an earlier hemothorax, in order to give in connection thenewith a survey of my clinical experiences with the residual cavity of the hemothorax. The 23 year #ld soldier had been wounded by a small arms projectile on September 21, 194-2, and received a gunshot wound with the missile passing through the right lung, A hemothorax developed which was aspirated several times. At first there were great quantities of a sanguinous fluid. The punc- tures undertaken later on were negative. On January 15, 194-3 he was received in a specail hospital for patients suffering from injuries of the lungs,. Con- trary .to similary wounded men, he did not recover in spite of the same treatment. His general condition left much to be desired. His appetite was moderate. He always felt faint and physically weak, He was not even able to tolerate light physical exertions. In addition to a shift to the left, the blood cell count sho?/ed a slight anemia. The sedimentation rate was al- ways slightly accelerated. The right half of the thorax showed a distinct shrinking, and the inter- costal spaces showed considerable limitation, Clinical- ly and radiographically an extensive thickening of the pleura was found. Repeated punctures again showed negative results. However, based on my other ex- periences with sequelae of gunshot wounds in the lungs, I supposed a focal inflammation in the thickened pleura was to be considered the source of infection . The general condition was similar to that of focal infection. With regard to this I recommend a diagnostic thoraco- tomy which the attending physician agreed to since he was not successful with medical treatment, and the patient also consented because of feeling sick without any recognizable cause and wishing to get rid of it all. On August 9, 1943, I operated above the middle of the thickened pleura under local anaesthesia performing an extended subperiosteal resection of the right sixth rib. The exposed periosteum and the considerably thickened pleura, lying below it, was split along the course of the rib. After separating a callius of more than 3 centimeter thickness I opened into a cavity which circumscribed nearly the entire right half of the pleural cavity. It contained air and only a small quantity of a turbid, slightly bloody fluid in which a non hemolyzirig 3 accumulation cocci could be demonstrated bacterio- logically. Besides there were decaying, bad smelling clots of fibrin larger- than a fist. Re- siduals of the earlier hemorrhage were indicated by their yellowish color as well as the pleural callus-. The wall of the cavity was covered by similar, not very adherent layers which were curretted away. After the cleaning of the cavity, it was closed according to the principle of the lattice plastic operation by HELLER, (The lattice plastic is a method of thoraco- plasty which was described by HELLER in 1934#) There- with in the thorax above the cavity, which must be closed, the ribs are subperiosteally excised and then the periosteum is split in the middle along the course of the ribs and likewise the thickening of the pleura lying underneath the ribs. By this way the intercostal nerves and vessels remain intact. Strong ligaments of soft parts develop from the intercostal muscular apparatus and the thickening of the pleura. They can be made movable and when the technioue is correct, they hang down slackly so that astonishingly large and deep cavities can easily be eliminated, I applied this method in nearly 150 cases of empyema residual cavities and was successful in closing each cavity by this excellent operation, no matter how difficult the situation of the cavity may have been. The lattice plastic operation reouirad an extended subperiosteal resection of the second to nirith rib* The postoperative course was smooth, and 4 weeks later the discharge to the special hospital for after treatment of the gunshot wounds of the lungs could take place for convalescence. The result of the operation was astonishing. After removing the residual cavity of the hemothorax with its decomposing mass of albuminous matter, all the phenomena of disease, previously present; disappeared. The appetite returned and caused a considerable increase of weight which previously had not loe.i obtained in spite of all efforts. The general weakness ana fatigue dis- appeared. The wounded man ar,ain felt like a healthy man. The functional capability improved. The blood picture and the sedimentation rate returned to normal. The impairment of the respiration which was caused by the elimination of the entire right lobe of tha lungfnatural- ly could not be avoided. The general condition progressed so satisfactorily that, after a short time of convales- cence, the patient could be released from the hospital whereas before the operation the disease could not be influenced by any means, not even by excellent medical management for a period of 7 months. The course of this observation described in de- tail gave a very imporessive idea of the clinical impor- tance of the residaul cavity of the hemothorax. After this description, the most important viewpoints brought along with the aspect of disease and the ouestions started by it can be discussed more easily and under- stood with a further 23 cases on the basis of this ex- perience , 4 First of all we have to consider the cause. With- out doubt this is to be seen in the so called post- hemorrhagic pleuritis. The residual cavity of the hemothorax represents an aftermath of this condition. This explanation is not sufficient in regard to the evaluation of this aspect of the disease. On the contrary we must consider in detail tbs ouestion - why the presence of blood in the pleural space causes a serous exudate of the pleura which sometimes requires frequent aspiration and discharges considerable quantities of fluid after what primarily was not too severe a hemothorax. Concerning this there exist two different con- septions, MORITZ considers the cause for the post- hemorrhagic pleuritis to be a simultaneously occuring infection. doubts the correctness of this opinion with the justified objection that the hemorrhage generally is found to be sterile. His opinion is that the entire process is based on an aseptic inflammation and formation of exudate. With this interpretation the question is left undecided as to why with some people only the pleura is susceptible to the irritation of the extravasation and causes an abundant exudation of fibirn and a marked pleural thickening. A short consideration of this problem is not to be avoided since the cause of the posthemorrhagic pleuritis is of decisive importance for the treatment of the re- sidual cavity of the hemothorax. From bhe last - orld War there are some investigations on the behaviour of the hemorrhage with penetrating gunshot wounds in the chest (REHN, COBFT, TOFNISSEN, GFRHARDT and others'. According to experiments on animals, an accumulation of blood in the pleural space should not leave behind any sequelae. With horses, TROUSSEAU has brought into the pleural space great quantities of blood. This was ab - sorbed with astonishing speed and completely without donseouences. MORITZ, repeated these experiments with dogs and found the same result, Fvom these observations and his clinical experiences he concluded that hemothorax in man was a harmless matter which did not lead to a posthemorrhagic pleuritis if it is truely sterile. He points out to the numerous hemorrhages which were so frequent during the war with wounded soldiers and which were rapdily absorbed without leaving benind bad se- quelae, as there are thickenings and callus. Wow this would be the normal course with a sterile hemothorax. The frequently ne-ativo bacteriological examination in the hemorrhages which are not absorbed represents an im- portant objection. MORITZ opposes the same with the following evidence; The question concerns attenuated agents or the conseouences of their toxins. The presence of highly virulent germs on the contrary should lead to a pleural empyema. Our own observations contain several viewpoints which are important in reply to this formulation of the question. First of all, the result of the bacteriological jJ3X§sii.gaii.aaj ia interesting. With the larve number of the patients who had passed through many hands, the ab- 5 sence of a systematic bacteriological examination is not surprising. Conseouently, a tabular summary cannot be given. Therefore, I wish to restrict this discussion to a short summary of the results. From the 24 residual cavities of hemothorax which I have seen until now, I have operated 18, Before the operation a search for pus forming germs took place only in the fluids obtained trr puncturing 7 wounded men. With more than half of them (4)9 staphylococci and streptococci were, some- times repeatedly, demonstrated. With the thoracoplasties we searched for bacteria in the fluid of most of the cases. Among 14 specimen, bacteria were found in 7 cases, which had been established with some wounded men even before the operation. Success was achieved in healing six further residual cavities of the hemothorax without operation, but only by the negative pressure treatment* In all these cases the search for pus forming bacteria was negative though it was repeated several times. For this there are two possible explanations. uince this aspect of disease could be healed without operation, the disease was probably less severe than with the cases treated by a thoracoplasty. Furthermore, the possibility must be considered that during the existence of the re- sidual cavity of the hemothorax for months and years the germs have been destroyed. In this sense the negative bacteriological findings in fluid obtained by aspiration from wounded men can be explainsd in whom at an earlier date, when the hemothorax was not so old, bacteria might have been found, Adir ttedly, these findings do not permit a definite conclusion on the cauf3 of the hemorrhagic pleuritis, but on the other hand, there is no doubt, after these bacteriological results, that the infection has a decisive influence on the development of the residual cavity of the hemothorax following a penetrating gun- shot wound in the chest. Further important observations can be cited to support this interpretation. With the microscopic examination of the fluid obtained by puncture. The presence of many leucocytes was astonishing. With some residual cavities there were even fluid transitions to the pleural empyema. As to the surgical findings, three wounded men showed a closed empyema residual cavit}?-, when the clinical course and the development of a hemo- thorax existing for many months would net nave suggested placing them in the group having a residual cavity of the hemothorax. Also the thick clumps which were regularly found in these cavities at the thoracoplasty, are worth mentioning for they showed rather the same structure as those of the same sort which can be found after a short time with every infected pleural empyema. Finally the symptoms of disease, whrch are to be described in detail, have to be taken into consideration. They can be explained in the most convincing manner by the presence of a bacterial infection. Their dis- appearance after removing the focus of the disease is to be considered as a direct pro*f. All these view points, however, suggest making the penetration of germs re- sponsible for the development of the residual cavity of 6 the hemothorax with a probability that is nearly cer- tain, How far this conseauence can be applied to the posthemorrhagic pleuritis, can be passed over here. On the other hand, from this knowledge and the principles of general surgery the postulate can be formulated indicating the surgical treatment of each residual cavity of the hemothorax as soon as it causes pains and its healing cannot be obtained by other methods, in order to remove the focus of inflammation and its seouelae from the body* A reproduction in detail of our £athpltgic#-anatpm- is, not necessary. But some short re- marks for the better understanding of the whole ex- planation cannlt be avoided. Similar to residual cavities follwoing empyema, the cavity after a preceding hemothorax can occupy an entire half of the thorax or only a part of the same* The flhst form occurs rarely. The second appears nearly always in the post-rior lower part of the pleural cavity and has the shape of a cloak. There- fore, it is most practical to distinguish between a partial and a__total_residual..cavity of the hemothorax. The ¥\rall of the hollow space is formed by a thick callus which may be as thick as 5 centimeters. Usually it has a gray-white color, but sometimes it has a brownish- yellow tinge, and can contain residuals of the proceeding absorption of blood. The callus shows concentric layers. On their inside there aif* often layers like the layers of an onion. The content chiefly consists of air and ge- latinous, fibrinous clumps of fibrin. There cause a comprehensible astonishment. Sometime'3 t ere on the point of decomposition and have a oc.cr ■ &p on da ng color. Small ouantitjes of fluid may be prep out which can easily be overlooked during the puncture. Usually It has a brownish, sometimes a chocolate colored apoearnnee, The histological structure depends somewhat on the age of the callus... Sometimes the pleural thickening is composed of hyalinizing connective tissue, rich in vessels, w th fibrinous layers. On the other hand, it can als» be permeated by chronic inflam atory infiltrations and may contain cel1s containing hemosidering, Occasional- ly the wall next to the cavity is covered by granulation tissue or is infiltreated by "pus coruusc1esH so that it could be considered as the wall of an reontgenolo- gical demonstration of an empyema residual cavity with bronchial fistula, Illustration 6 could not be reproduced with the facilities availably Illustration 4 Transformation of ribs (form- ation of rings and syncstoses)and osteomyelitis of ribs after multiple injuries by shell splinters as the cause of an empyema residual cavity* 6c Illustration 7 could not a b be reproduced with the facili- ties availably* a b Illustration 7 Special findings of ribs in thoracoplasty, a) Osteomyelitis of ribs with development of a cavity, A small splinter is still sticking partly in the rib and a small part of it may still be seen in the cavity, Ti) Bony plaques arising from ribs after preceding plastic. 7 described them as the greatest obstacle for curing re- sidual cavities* An explanation for this may be that small and very small fistulao were not considered in our tabulation if progress and findings clearly showed that other influences had to be made responsible for the development of the chronic empyema. It is little known, that achornic osteomyelitis of the ribs, too, may be the cause of an empyema re- sidual cavity (111* 6)* This was true with 6,1 of our patients. In some impressive cases with formation of a sequestrum the cavity secreted its pus into the thoracic cavity and thus gave rise to a constant recurring re- infection (111,7). Our first case in this regard showed a renewed formation of abscess- after periods of months when cavity and skin thrice seem to have been cured, I re- solved therefore te perform a subperiosteal resection of several ribs over the repeatedly recurring focus. In doing so, I discovered an osteomyelitic focus on one rib, by removal of which final recovery, aftfr two years of illness was attained. In a similar way the often num rous and grotesque pockets of the residual cavity too, support thr chronic empyern, By expansion of the lungs the c anal uniting the pockots is slightly narrowed, changed into a thin fistula, or even totally blocked. Such pockets like a diverticulum maintain the infection of the chief cavity, as their accumulated contents are a favorable culture medium for bacilli. Such conditions often cause an apparently unintelligible increase of temperature. In only 3% the existence of an accessory cavity was made responsible for the failure of the curative treatment (ill, B), This calculation as well as that of the bronchial fistula is based on really convincing observations. Probably wc have to take a greater number for granted here too. In many cases the develop- ment of pockets surely has contributed to the per- sistence of the empyema residual cavity. In the case of two patients a bad general condition might have to be considered, A discussion of those cases can be spared. But we have to explain the enumeration of tuberculosis in our index, as we excluded from the very beginning mixed infection pleural empyemac from the report about the lattice plastic. Both patients were sent to us for operation on the supposition of an empyema residual cavity after a preceding pneumonia. In the case of a 26 year, old woman an unsuccessful thoracoplasty and -n the case of a man of almost the same age a re- section of ribs had preceded. The cavity of the woman healed slowly after the secondary operation. By scraping out the fistula, tissue was taken for a histological examination which showed indisputable tuberculous changes. The cavity healed completely and the woman patient re- gained full health afterwards, while an the case of the man a fistula remained. During the treatment a severe spondylitis tuberculosa began and in addition to that a fatal miliary tuberculosis. 7a Illustration 8 Empyema residual cavity with bronchial fistula and accessory cavity. 8 The impression in both observations was, that one !ad to deal with postpncumonia partial residual cavities. It is justified to suspect that this was based on a specific infection. It is possible, that errors in this regard occur often. Nevertheless I enoted both cases in the index of the causes of the empyema residual cavities because the discussion of these pathological symptoms is very instructive. There arc reports of chronic suppurations of the pleura, which at first seem to be trivial, but later on prove to be tuberculous, J, ALFXANDFR alone described 8 observations which, although operated already, came with a fistula to him for treatment. Exploratory excision showed in all cases only ordinary sjwnptofns of inflammation at first. At a repetition aft eh several months, however, there were to our groat Surprise little tuberculous knots. In case of our two patients it is not possible to prove convincingly if, in spite of apparently incon- testable precedence and progress up to the plastic, there existed a postpneumonical or a mix-infcction empyema from the beginning. In both cas; s it stems rccommcndable to use exploratory excisions of the plcur al callus at the t horac opl as ty itself, in gw- of bad 'wal- ing and first of all always before each subsequent oper- ation. After this digression, wh? ch w:.s necessary to avoid repetitions in a later chapter, we still avo to discuss the last cause of the empyema rr si dual cavity. Contrary to other statistics, in only the ease of one patient a chronic empyema residual cavity did not heal due to a foreign body. In this case it was a rubber tu.be of 8 centimeter length (111, 9), that had slipped un- noticed into the pleura cavity and thus maintained for one year a totally closed empyema residual cavity with- out any connection with the bronchial tree. In some plastics, parts of projectiles, especially shell-splint ors were found, which had not been taken into consideration as they were not the decisive cause for the existence of large cavities. With this summary the most important causes are discussed. This table surely has the disadvantages of every scheme. Without doubt, in the case of some patients several factors had to be regarded, but it was difficult to determine the most important one, A further disadvantage is that the pleural empyema©were n«t treated by us according to homogenous rules after resection of the ribs, but nearly all came to our clinic with an existing residual cavity. Clinical records used for research of the origin of an aspect of state may result in mistakes. Surely grave omissions in after-treat- ment, especially insufficient breathin’ gymnastics, ,rc not aporopriately mentioned. On the other hand the sur- vey of so groat a number of patients s' ows in a general way what has to bo done to avoid the origin of the dreaded empyema residual cavity. 8a Rubber tube in the survey- picture , Condition after lattice plastic which shows the extent of the surgical obi. liberated residual cavity. Illustration 9 Rubber tube in the thorax as the cause of a closed empyema residual cavity, is easily overlooked, if tho film contrast is too faint , 9 THE_INDICATIONS There is no generally authentic indication as to the moment of the operation. Some manuals suggest not to wait more thin 2 months, Fvon in case of a bronchial fistula this period is too short. Generally the cure of large cavities of adults with chronic suppuration from the thorax cannot bo expected anymore after a lapse of 6 months, on the other hand PERTHES, HARTERT, NEVILLE, GOETZE, WP'STHUFS, etc., furnished proof that they can be cured permanently by a suit- able suction treatment, oven aft-r a longer period. One therefore, must have the guarantee that this treat- ment is or has boon conscientiously performed before the operation. Though old cavities c innot be closed, they are often reduced so that a smaller plastic 'will be sufficient. We therefore treated every chronic empyema, that has been treated before by oth rs, again with a suction treatment and used a very strong suction. Even in apparently hopeless cases wo gained progress by using the water-jet suction apparatus. Opinions differ as to the employment of negative pressure in case of a bronchial fistula. Surely, chances are more unfavorable in this case, but on the other hand cures of empyema residucal cavities arc possible this way. It is re- commendable to interrupt the suction fr in or-mr to enable the bronchial fistula to heel. Because of those different treat rnts we succeeded in closing every fourth or fifth empyema rrsi dual cavity that was sent to us for plastic, without any operation. It is to be understood, that no precious time may bo lost by conservative treatment. Complications rising in the brain arc especially dangerous here. Although they arc rare, I ordered the collection of all cases of cerebral abscesses and meningitis, which occurred during the last decades with acute and chronic empyema residual cavities in the clinic of Giessen. They uni- formly cover such large periods of time that there is no special hazard during the first or second 6 months period. The possibility to close or reduce the cavity is so groat, that there is nearly no objection to chance either cerebral complications if conservative treatment is con- tinued, or the danger of the well known toxic damages (amyloidosis etc,) Nevertheless the moment of th« oper- ation must not be postponed unnecessarily. An exact fixation of the moment is therefore necessary. It certainly has come, when a further diminishing of the cavity cannot be expected. Today this moment can be fixed by X-ray pictures of the residual empyema taken at various periods of time (111, 10), We therefore make X-ray controls every X weeks. According to our experiences a further diminishing is not to be expected if, in spite of intensive sucking treatment in connection with breathing gymnastics, no reduction in the. extent of the contrast-shadow is recognizable in the X-ray picture after 4-8 weeks. 9a View from front t* back. View from tho side shows the extent of the cavity and especially the pockets and sack formation* The long fistula canal is striking as to be sen also in Illustration 3. Here too, a resection of ribs at the base of the c wity has to precede the plastic. Illustration 10 X-ray picture of an empyema residual cavity from two sides. 10 Greatest caution, howcv r, should be used in the evaluation of the X-ray clotures,' To determine the real extent of the residual cavities, X-rays from two sides always hav to be made. The differences arc considorable, We learn, by comparing with operation findings, th t the cavities arc always larger and more ext-a si ve than appears in the X-ray pictures. Larac accessory eviti-s, connected with the chronic empyema only by snail openina, and the often numerous small pockets reyularily escape roentgenological detection. If thick fibirin-clots arc- in the residual cavity, a less extensive cavity may bo suspected. The filling of th fistula may be negative and yet a cavity exists all the same. I point towards the value of MERIO’s method to ovoid deceptions. Every precaution Is to be used in case of a bronchial fistula. In one case we saw thorotrast enter the sound lung by reflex action. Such events must ab- solutely be avoided (ill, 11). In case of a bronchial fistula wo have to abandon X-rays as the danger of chronic and acute damages is too great. PREPARATION One of the most important conditions for success is a careful preparation* In this case several points of view have to be regarded which do not have the same significance in an ordinary operation. First of all we place the care for detoxication, next comes the removal of damages caused by chronic suppuration and finally the increase of protective power of the patients, who are tiofct often extremely weakened* Though the influence cf detoxication on the success of surgical operations in case of fecal stagnation uith carcinoma of the large intestine is well Vnown, one is always surprised to see how seldom this knowledge has been used in the treatment of the residual cavity. We never operated uoon any patient, if before the operation the outflow of the pus from the pleura cavity might be influenced in the least. Any narrow fistulao arc always dilated. If this was not possible on accout of the formation of narrow-bone rings at the place of drainag , the resection of ribs was repeated. After this simple method of treatment the general condition improves as a rule. Thereby above all th; ngs the cavity and the operation can be made the smallest possible. In several extremely grave cases one or two ribs at the lower end of the cavity were removed to begin detoxication as quick as possible and to make it effective. It cannot bo emphasized enough, that SCHEDE?s classical method of treatment requires in the first act a subperiosteal resection of the lowest rib and thereby a broad opening at the base of the empyema residual cavity, and by this to provide the Kest con- ditions for the drainage of pus. 10a Illustration 11 Condition after thoracoplasty because of left- sided empyema residual cavity with bronchial fistula* During the roentgenological presentation before the operation, Thorotrast was aspired into the right lung after a cough irritation, and is to be recognized months afterwards by the numerous coarse spots. 11 Irrigation treatment assists detoxication effect- ively, Numerous exp rimonts revealed that disinfection of a residual cavity cannot be expected. Its effect seems to be only mechanical. It has to wash out the albumin products of disintegration to prevent a toxic damage of the organism. The kind of rinsing fluid used, is immaterial; we use solutions of Rivaaol. io did not observe any special advantage in introducing sulfonamides into the empyema residual cavity. Irrigations must bo used first of all in cases of residual cavities, which secrete putrid, foul pus because these patients are extremely damaged and more liable to relapse, even if the plastic is of small extent. There is a statement of a research from E, SCHNEIDER about the toxic . off ct of foul pus in case of pleural empyema. He traces it back to the decay of albumin substances of the kind of methylonacrolin and allylamin, I urgently . discourage a plastic as long as the pus smells fetid. Quite as important as the care for radical detoxi- cation is the elimination of the. damages caused by the chronic pleura empyema. Here the blood transfusion is the decisive matter. Only today can we fully estimate its importance. Even during the first World War FAIR referred to the dimunition of the hemoglobin values in cases of pleural empyema and demanded a more frequent check to evaluate the aspects of disease. This was not done until during the last war (1939-194-5) when WACHSKUTH, DUESBFRG and SCHROEDER of the special hospital of th General Headouartors of the Army care- fully explored the changes caused in the blood, by chronic suppurations in systematic, most careful examinations. The results are of great importance to understand prepa- ration and after treatment4 To avoid repetitions they will bo described fully here as far as they are of surgical interest. In case of chronic pleural ' a the damage by long lasting secretions of pus and the loss of protein connected with it, is especially pronounced. The loss of protein is easily to determine numerically as to its extent with this aspect of disease. In serious cases cachexia is developed by a deficiency of protein, A ' healthy individual disposes of areat depots of protein. From thorn he can deliver within 2U hours protein enough into the blood channel to form 1500 cubic centimeters of plasma. But with chronic suppurations because of the elevated temperature with toxic and bacterial decay of protein, th re developes a decrease of these depots by insufficient assimilation of protein and the suppuration itself. Combined with these processes is a deficiency of valuable protein building materials for the vitally important hemoglobin. It is followed by a considerable change in the picture of the rd blood corpuscles which finally gives the impression of a sideropic anemia. If ascorbic acid iron is ?ivcn there is no increase of reticulocytes and no amelioration of the hemoglobin de- ficiency, On the contrary, the erythroblastic apparatus is prevented from developing completely and remains in a macroblastlc state until th-re are sufficient quantities 12 of protein to furnish the building material for the normal amount of hemoglobin. If there is an extreme deficiency of protein, hemoglobin will be used to cover the protoin deficit. In this stage in case of empyema residual cavities the erythrocytes decrease numerically and the amount of hemoglobin lessens. It is therefore not astonishing that wo saw the most serious anemics with soldiers whose protein depots had been much exhausted oven before the development of the chronic pleural empyema by the hardships of war in the east and by considerable loss of blood upon being wounded. The valuable results of the research of DUlbhBBRG and has collaborators, which have greatest importance for other branches of surgery too, explain convincing- ly why the transfusion of blood, already freruently used on the basis of practical experience with the empyema residual cavity, is very iraoortant for the preparation for the operation. The alternative - restitution of protein by the enteral way is- .not sufficient or cannot be tolerated. Only by way of blood transfusion is it possible to remove the deficiency of protein and to replace? the plasna* In c .c of consider- able deficiency protein even the tr sfused v.d blood corpuscles ill b. censured for protein to ; greeter or lesser degree• Thus they render nor. v .luable s.rvlc. than they i ight itregard to tin r cpir .tory function. Undir'- t:icse circu.. stances the effect of ■. blood transfusion 1 o.sts for . short tine only. Its effects apoo \t visibly only after the protein depots start to fill up again* be have to c a siacr tha.t possess the richest supply of protoin and calorics in the erythrocytes which v/o can" supply to a patleiat pall enter ally in liquid forn and that the highly '*■ valuable plaona - and henoglobin protein as a character- istic protein can be absorbed by the body in: ediatoly with- out any loss. The transfer of sorur is less ..ffectivo, ‘ as its protein content is only a third of that of thy cells. Those examinations make us understand the value of blood transfusions in case of empyema residual cavities. They enable us to alleviate protein cachexia. If this is done, the patient is able to endure the thoracoplasty and first of all the mest important post-operative com- plications, the operation shock and the danger of secondary hemorrhage, which may olace heavy demands on the protein depots of the patient. Blood tr ',ns- fusion has therefore to be repeated before every surgical operation until the body possesses a sufficient stock of protein again. We arc able to fix th:i s date to some extent by frecuent checks of the blood picture. Con- tinual controls therefore are essential to judge the aspect of disease and set the appointed day of operation. Protein cachexia diminishes as soon as transfused protein will be taken to form hemoglobin-protein and the ery- thropoesis increases, which sometimes is explained mis- takenly as an irritant effect. The increase of the erythrocytes is usually limited and seldom reaches a fully normal level before the most important cause for the decrease of protein, the chronic pleura empyema, is eliminated, 13 The objections to the employment of blooi-transfusion are unjustified. Fvcn with diseases of the pulmonary circulation there is no danger of overstrain. The increased circulating Quantity of blood is removed by storage in depots. This is a false doctrine, which has done the greatest damage especially in thorax surgery. After operations in the thorax blood - transfusions-* aa?c nearly always necessary to obtain good success and to avoid post- operative shock. The improvement of the general condition t i.kes the third place in the preparations for operation. It is common sense that weakened patients should be strengthen- ed as much as possible by food rich in calorics and vitamins* In many cases we injected a good euantity of vitamin C intravenously before the operation, but this showed no convincing advantage. In case of toxic damage of the heart and with older patients wo used a strophantin treatment. The psychic treatment of patients, ’ • who sometimes have passed a long period of suffering and have a serious operation ahead and the calming of the visceral nervous system by doses of Bellorg.il or Luminal- ets favors recovery, and facilitates the performance of the operation under local anaesthesia* THE. TECHNIQUE .0F..0PERATI0N The success of the operation is influenced very much by the method chosen for analgesia, It is the general opinion that empyema residual cavities can be removed only under general anaesthetics because of the h~avy growth of callus. This is not trtle* In case of nearly 99% of our patients, coming from different marts of Germany and for a smaller part from foreign countries a local anaesthesia, prepared carefully and given some time before the operation will be sufficient, A groat deal depends upon the teohnioue of the injection. We were able to perform an extensive second thoracoplasty without any manifestation of main on the part of the patient whach was not possible at his first thoraco- plasty made in another hospital, where a complete ether anaesthesia had to be given. In case of strong formation of cil1us regional anaesthesia Is therefore the field of operation itself must be infiltrated. Others too emphasize the advantages of local ana- esthesia to remove ’ empyema residual cavities, VObSC'IULT*' reported from FREYtfee clinic, that postoperative mortality was reduced from 26,7% to 17,4% after replacing general anaesthesia by local anaesthesia, I have successfully performed without difficulties several extirpations of lobes of the lung ( once, two lobes in one session) transpleural oesophagogastrostomies and other large operations in the thoracic cavity which require much more of a patient than the thoracoplasty in case of empyema residual cavities local anaesthesia. f* 14 According to our experiences it is justified to try to succeed with local anaesthesia in case of every lattice plastic and even secondary operations. If necessary, "S.E.E, simple solution" may be given (that is; Scopolamin hydrochloricum 0,0005, Eucodal 0,01, Ephetonin 0,025). I do not advise intravenous injections of Evipan and Funarcon in intrathoracic The least strain in an additional light ether anaesthesia from which the patient can awake any time. With this one is able to judge best the degree of damage done to the general con- dition and avo d that the patient will bo seized with the always threatening danger of a shock, DEfEL too, praises the advantages of a slight ether anaesthesia, which turned out well in his use of SCHEDE's plastic. The technique of the operation itself is simple and has already been discussed in its characteristic feat- ures; but I lay stress upon some points of view and ex- periences, SALZER’s opinion is, that HELLERS method of treatment is of no use and can be replaced by the method of SCHEDE, if the pleural callus is thicker than 2 centimeters, HELLER we cannot agree with this opinion and consider the c&llus to be a valuable material to fill out the cavity. Even after thoraco- plasty with callus up to 5 centimeters thick, we did not observe any necrosis with marked or long lasting suppurations. The combination of HELLER's and SCHEDEls plastic turned out well. Especially in case of secondary and two stage operations this is the only possible way to remove the residual cavity, whereby the parietal pleural callus has to be removed in the lower sections. A simple additional method of treatment is recommended in all cases with thick callus. Here sometimes a certain stiffness of the ligaments is to bo observed. They do not lean against the lungs without a certain tension, thus favoring the danger of a renewed development of cavities. Under these circumstances I resected from the pleura, thickened by callus a broad based wedge at the posterior insertion of the ligaments at their inner side, carefully preserving nerves and vessels. This results in a total relaxing of the striae which afterwards fit easily into the deepest cavities. The same method can be employed at the front end of the striae. In employing this method one avoids to a great extent the occasional resection of ribs far beyond the anterior border of the cavity necessary for relaxation. In some cases we formed ligaments of twice the usual breadth. After resection of the ribs onl}?- the inner periosteum of every second rib was split longitudinally. This is supposed to assure the nourishment of the stria and to make the incision as small as possible. These broad ligaments are too rigid and it is more difficult to place them into the cavity. Moreover we observed that after this method the infections lasted longer than usual and therefore we declined to alter the technioue in this regard, 15 Most methods for operative removal of empyema residual cavities reeuirc special consideration of the Question of how to deal with the scapula. In most cases VOSSCHULTE resected the lower part of the scapula to give soaco for relaxation to the lateral wall of the chest, SAUERBRUCH even removes the medial rim of the scapula, if by pressure against the vertebral column it hinders the lateral sinking in of the wall of the chest. These methods of treatment leave a restriction of the mobil- ity of the arm above the horizontal lino. All these functional and cosmctical disadvantages arc not to be found in the method of HELLER, In the first hundred operations I was forced only once to remove the lower half of the scapula as in this r ggion it was bonily adherent with the ribs underneath. Since then I have had to resect parts of the scapula in only two cases. They were extremely difficult secondary plastics, where after the proposal of SUDECK I used subscapula muscles to fill out a cavity situated posteriorly high and paravert ebrally, The cure of bronchial fistulas at the same time with lattice plastic is not difficult. Scraping out of the mucous membrane and ligating round the end of the fistula arc sufficient. Formation of striae is suffi- cient for cover and they close the bronchial fistula by means of a well nourished pedunculated flap of muscles, as proposed by NIESiFN in 1932, a matter which is super- fluous in case of ordinary residual cavities. This does not nr an that occasionally specially situated bronchial fistulac or even lattice lungs may occur, in which cases only NIESSEN1s proposal gives the moot certain and best guarantee for a cure. I too, used it successfully a, short time back in a ouite abnormal case, that had been operated four times previously in vain by experienced surgeons, With this case I used the principle of relaxation which was pointed out by LEZIUS in 1938, and which is quite sufficient to obliterate ordinary indirect bronchial fistulae, LEZIUS recommends the removal of the ribs or their regenerates surrounding the fistula within 7-10 centimeters, to cause the recovery by the flexibility of the lung-tissue thus created and its shrinking after- wards, situation is nearly always created, if lattice plastic is used. Only in exceptional is a more extended resection of ribs than would be necessary for the closing of the cavity necessary to got a sufficient relaxation. According to HELLER the possibility of shrinking is great, as proved by the following obser- vations. In the case of a closed, total empyema residual cavity, that had been unobserved for throe years, we decided on a two stage operation on account of the bad general condition of the patient. The ribs 6-10 were re- sected subperiostrally in the first session and the thoracic wall was treated according to HELLER’s method. In the area of the hilus there was a bronchial fistula with a lumen larger than I have ever seen before. The fistula was not touched. Its closure, which caused us some Yrorry, was supposed to be performed in the second session. Three months later, to our surprise, the bronchial fistula had disappeared. 16 No doubt there arc aspects of disease whore one is obliged to apply a muscle plastic in connection with a relaxation at the same time. In case of a residual cavity, however, HFLLERis plastic assures sufficient flexibility of th surrounding tissue of the lungs, and thereby cures th~ bronchial fi'tulae. Up to now we wnre able to close them all this way. In c a scs of secondary operations too, which were necessary with some of our patients the continuation of a bronchial fistula never was the cause of a second operation. In completion of this, the finding at one operation may be mentioned of a condition which is rarely discussed, but on the other hand reouires a great deal of the surgeon in every operation. It is gen rally known that, if the thorax shrinks, the distances of the ribs will grow more narrow and it is possible that the ribs may telescope like tiles. But the changes in th' ribs themselves arc seldom mentioned, BIBGARD made thorough examinations here. The roundish ribs loos' thrir shape above the residual cavity. They become more triangular or rectangular by aggregations at the lower ram and at the inner side. The change is especially marked in the area of the angle of the rib, Occasionally even synos- toses of neighboring ribs arise. According to the experimental findings of BISGARD the changes originate in an aseptic inflammation and an abnormal pulling effect on the periosteum. The first one seems to be more important. Generally there is considerable similarity to the reaction of the bone in the neighborhood of osteomyelitic foci. The periosteum is stimulated to an increased formation of bones and grows thicker. Above all, the bone itself thickens. Both developments render subperiosteal resection of ribs difficult in cases of empyema residual cavities, where- as they are easy to p-rform with thoracoplasty in cases of pulmonary tuberculosis. The inflammation can spread along the periosteum up to the joints where the ribs are connected with the vertebral column, and caus# purulent inflammations there, close examination the often marked changes can bo obs rved o11ite frequent- ly, but they ere seldom taken into consideration. But they must bo considered as a cause of the occasional appearance of the otherwise inexplicable meningitis with the empyema residual cavity, as we shall sec later. It Is a cuestion of utmost importance to decide if the thoracoplasty should be performed in one or several sessions. According to general opinion, the operation of residual cavities is never a trivial operation and on account of the preceding suppuration is always a rcat strain on th: v/oak patient. Therefore SCHFCF's surgical removal of all the ribs in one session associated with the removal of the pleura thickened by callus is discarded. It is generally believed, that several seesions are necessary (ill, 12). If lattice plastic is employed, the residual cavity can nearly always be closed in a single operation. With tho first 100 patients I made the plastic in two sessions only'in two cases. Both were in a bad condition. In the first operation I therefore removed only the lower 16a a Before the first plastic. b Before the second plastic. Illustration 12 Presentation of a total, two stage, oper- ated residual cavity. 17 4 respective 5 ribs, and closed the total cavity by a later second operation. In my later plastics I choose the two stage procedure more fremuontly, but then the patients were extremely grave cases, HELLER ro- com ends the use of more than one stage more, often. Today I do not consider this necessary, if preparation and aftertreatment arc made carefully. As secondary operations after lattice plastics arc especially diffi- cult on account of the numerous regen rates of ribs and the solid callus, a preceding subperiosteal resection of ribs above the residual cavity helps to reduce the operation in size. But this is only a makeshift. According to my experiences nearly ?.ll partial*, empy- ema residual cavities can be closed in a single session by means of lattice plastic. Patients usually endure the removal of 3-A ribs well and of 5-6 without considerable damage. Every precaution is to be used in case of total and subtotal cavities. As to the extension of the elastic I depend on my own ,1 udgement of the a a nt dur i ng t h:■ time of preparation, hir- general cond: tjon and his reaction during the operation, A careful and extremely conscientious control is necessary if sir ben serious surprises are to be avoided. If a serious shock arises, everything has to be stopped. In the case of several patients I first intended to operate in two stages, but after due consideration during the opor ation I resolved on a one-session plastic. Here the patient’s reaction to the operation influenced considerably the change of ray decision. To judge approximately the seriousness of the operation and to keep constantly informed about the extension of the removal of bones from the thoracic; wall, the length of the resected parts of the ribs may be measured continuously. Generally the removal of 60-50 centimeters can be endured without danger. Greatest caution should be used, if it goes beyond 120 centimeters. In case of two stage operations, lattice plastic should preferably be started from below. If possible, some- how, I recommend to extent the first session ui to the removal of the fourth rib. On account of this I ob- served later on in case of several patients, who were to have a second session afterwards a surprising recovery of the upper section of the cavity. The length of the intervals between the sessions depends on the patients general condition, A period of at least 3 weeks is essential. Gen -r ally second operations are tolerated better after a long r int rval. With one patient I performed a small lattice plastic for detoxi- cation by resection of three ribs. In case of this severely damaged 21 year old patient who only weighed 36 kilograms for a height of 182 centimeters at his hospitalization, the second session could be performed only after a lapse of 9 months *when his weight was stabil- ized between 49,5 and 50 kilograms. According to the development, w h i c h SCHEDF’s plastic has undergone during the last decades concerning the sub- division of the operation, one will bo critical of my recore ending to perform nearly all the operations in one session with HELLER’s method. This proposal seems to be IB contrary to every assured experience, 'ithout doubt it is possible to increase the power of resistance against the operation by a careful preparation and a conscientious after-treatment and on account of this the patient is able to endure more strain* Our method of treatment for the first and second rib surely has special importance in case of lattice plastic. In the first period of us© of thoracoplasty one could observe the so called vibration of the wall of the chest which occurred aft r total removal of the ribs. Today this severe complication is seldom observed after the operation of an empyema residual cavity. On the other hand, the removal of the first and second, rib is an additional great strain on the circulation. In the methods of treatment used for the removal of empyema re* sidual cavities up to now, the closing of the rccessus epitympanicus meets difficulties, even if the method of treatment is used, wh~ ch was first recommended by SAUER- BRUCH for the operation of mixed infection empyema, VOS - SCHULTE impressively: Even by total removal of the upper ribs a depression of the mobilized thoracic wall against the- visceral pleura of the collapsed lung cannot be enforced, as the shoulder girdle s t i 11 acts as a support, keeping the rcccssus epitympanicus extended. While in thoracoplasty In case of pulmonary''tuberculosis the first rib takes some kind of a key position and in the usual method of treatment for removal of an empyema re- sidual cavity is judged similarity, it car. be disregarded with total cavities, if lattice elastic is applied. Using this method of tr atment, I n ver removed the first rib, and later on almost regularity left the second rib in its place too, (ill, 13 and 14), The rocossus epitym- panicus, the closure of winch is so difficult by other met' ods, may be filled up easily by a careful formation of freely movable striae with thick callus. To meet the possible ob’oetion, that only light cases wore treated, I give a short survey of the number of ribs removed. In about one ouarter of the cases 4., 5 - 6 ribs w re resected in 16 cases, 7 ribs, in' 9 cases 8 and in 2 cases 9 ribs. To evaluate the extent of the operation I think it is essential to state the length of the pieces of ribs removed. In our last plastics, an average of ribs with a length of 105 centimeters wore removed. In the case of one patient the total length of ribs removed in one session amounted to 180 centimeters. His postoperative recovery met no di f ficult ie s, The removal of ribs ma5r not bo Torformed too thrifti- ly or inaporopriatcly otherwise recovery even after lattice plastic fails and a no-* piastre w: 11 become necesrary, On the other 'hand not too many 'wnes should be removed from the thoracic wall. As I der.onst* -ted in a previous publication, the lung ti sue recovers perfectly after a lattice plastic, especially in case of young patients. This is explained by the important observation of SAUTRBRUCH that the collapsed luna is able to extend again, if it is still under the effect of a re- maining part of the thoracic wall, and that by the in- fluence of its function it may even recover, SAUBRBRUCH therefore, thaugh he urges to remov,. the bones radically. 18a Illustration #13a could not be reproduced with the facilities available. Illustration 13 Total right sideded empyema residual cavity (a) before and (b) after the lattice plastic, with first and second rib preserved. 18b Illustratien 14a b could not be reproduced with the facilities available. a b Illustration 14 Total empyema residual cavity before and after the plastic, a) Contrast filling of the cavitxr before the open tnon, b) State after the plastic. Preservation of the first and second rib. 19 demands to preserve as much as possible of the thoracic wall. This apparently impossible demand may be ful- filled in an ideal way with the lattice plastic, be- cause one exposes the cavity by sacrificing no more ribs than absolutely necessary and moreover new ribs can be formed from the preserved periosteum of the ribs. To allow the lunas to expand, one can make some incisions crossing one another vertically in the callus on the surface of the lung. Even more effective is an early start of breathing gymnastics after the operation; special stress is laid upon thus in the after treatment. As to the technique of the operation we still have to mention, that before finishing the plastic and after a careful control of hemorrhage and cleaning of the field of operation wr. dust in an abundance of sulfon- amides in powderform. Usually we introduce only one drain occasionally two, with some gauze strips at the lowest point. A tor the operation we regularly use the rubber tension bandage, which has to be applied very carefully. By si: ght pressure it has to keep the strips in their position,avoid the new development of a cavity and also a sec olid ary hemorrhage. Because of the bacteriostatic power of the sulfonamides it is usually oossible to leave the bandage dn foi4 a week. pven in case of big cavities we use a slight pressure bandage in the aftortraatment, POSTOPERATIVE COMPLICATIONS To perform a conscientious after treatment, one must have exact knowledge of the most important com- plications, wh'ch in case of empyema residual cavities, threaten to arise after every thoracoplasty. They ought to be especially discussed, because only by avoiding the dangers arising from them is it pos iblo, to reduce the formerly high postoperative mortality rate to an astonishing low percentage. First of all we have to mention the shock, which can occur in case of lattice plastic as well as any other intrathoracic operation during the operation, and than demands an immediate blood transfusion. There- fore, in every case of thoracoplasty a suitable blood donor has to be at hand. As mentioned before, the false doctrine representing the greatest obstruction to thoracic surgery which stated that blood transfusions are bad mistakes in case of disease in the region of the oulmonary circulation has be. n abolished now. Even after an ap parently well tolerated plastic, patients, are freruently and sometimes surprisingly liable to shock. For 3 ~:rc .rs wo proceeded after careful observations and in spii- of all scruples to ake a blood transfusion i.m ediatcly after every lattice plastic which is the best means to avoid shocks. 20 A transfusion of at least 4-500 cubic ccntimot rs is advisable after large operations, S all transfusions include the possibility that shock repeats in the course of the da.y of operation. In this case the blood trans- fusion has to bo repeated imrediatoly. There is no' rule as to which patients will bo liable to renewed shock symptoms after the lattice plastic is made. The danger docs not depend solely on the extension of the oper tion and the general condition. Deceptions in a good or bad sense occur cuite freruently. As long as we do not know, the cause of the shook and a reliable prophylactic is impossible, greatest caution in supervision is re- commended, In case of several patients a renewed menacing deterioration of the general condition could only be eliminated by a twice repeated blood transfusion on the same day as the operation. In some cases, if necessary, we did not hesitate to use this sovereign means of avoiding shock and collapse not only during the operation but even the first and second days postoperatively, Based on impressive observations and convincing experiences j indications, v/hr'ch r re always examined exactly were first Mvon cautiously and then regularly. Unfortunately there is no substitu- of anywhere near the same value. Infusions of serum are definitely not so effective. Periston too, should be used only, in an emergency. Since we make blood transfusions systematically right after the operation and besides that as a rule in case of a deterioration of the general con.d.ition we could desist more and more from using continuous intravenous clipis of physio logic a.■ saline solution mb. th additional circulation stimulants. In a few cases it rendered valuable services. • A'tcr the operation it must be prevented by all means that the chock with its grave conseouences may take full effect. In many regards it is justified and in- st uctive to compare it to the reaction of the blood pressure in spinal anesthesia. But if bio os pressure has sunk below 80 or even 60 millimeters h moglobin it is difficult to bring it into balance again. Just as it is doss:blc to avoid the threatening danger by giving blood pressure increasing remedies in time, a prophylac- tic blood transfusion succeeds in preserving patients, who after a thoracopl .sty arc liable to shock and collapse, from damage which sometimes can never be eli- minatad, The second important as well as dangerous com- lication is secondary hemorrhage. The clinical conse- oucuces are manifested in collapse* Ad the shock too results into collapse, the effects of the shock as well as secondary hv>i orrhage are the sar.o. This is the gr«at danger after . thoracoplasty, If a patient is not suffi- ciently protected against postoperative shock, secondary herorrhage any bv fatal* Shock causes a change in the composition of blood, which is narked chiefly, without mentioning the displacement of ions, by the oxtrav .s.ati mi of plasma from the vascular system. An additional loss of plasma, caused by secondary hemorrhage, . ay have unf vor- able or even, life endangering; effects, Both v.ve::to are cs- ocially d .nger us for atiento with pyei .a residual cavities, as there preceded or still exists da age due to the protein deficiency caused by a chronic 21 suppuration* The depots of protein from which a healthy organism is able to replace its plasma in case of loss of blood, arc very small and soon exhausted, even after a good preparation. So after a collapse, caus'd by sreo:.ad- ary hemorrhage, cuick and effective aid as only to be expected from a blood transfusion. The origin of secondary hemorrhage, connected with tho thoracoplasty is a complicated, not suite explained proceeding. It docs not depend soleljr on a more or loss careful control of hemorrhage or on the extent of the operation. One. cannot bo sure if shock occurs more fre- quently in case of lattice plastic with its large wound surface but it is possible. Secondary hemorrhage seems to bo predominantly of a capillary nature. It is there- fore ess entail, to apply a pressure bandage after the o peration, The chief cause is a change an the composition of the blood and an impaired contractility of the vessels, t'oreoever wc have to consider the insufficient possibility of shrinking in the callus tissue. Sometimes one has the impression of a septic secondary hemorrhage. The blood scorns to be very poor - serous. This is frequently caused by a serous exudation and on account of change of the color of the serum it may be mistaken for a secondary hemorrhage. This loos of protein increases the danger* of a collapse or may even be the cause of it; but this consccucnce can be eliminated by a blood trans- fusion. If the general conditions deteriorates after the operation, one can be sure that almost regularily a transfusion of blood is necessary, c always acted according to this ooint of view and our successes showed that we wer-e right. There is no doubt that on account of the repeatedly mentioned investigations a' out the condition of protein deficiency in case of chronic suppur- ations it is possible to solve the problem of secondary hemorrhage after plastic closure of the empyema residual cavity. The osmotic pressure in the blood is changed by this and it can easily flow into the tissue. Toxic paralysis and damage of the vessles, as well as a special inclination towards hemorrhage can be observed here. As in this case too, we are dealing with the consequences of a chronic loss of protein, a blood transfusion is the only means to combat it. The general opinion is, that pneumonia takes the third place in postoperative complications. According to SAWROAA it will especially occur in t o stage oper- ations, after the first session. Incrr asc of temper ature was believed to have its origin in pneumonia in some cases wh ch proved to be wrong later on, I do not believe that a pneumonia exists in more than 2 cases out of a huadrod. Considerable and long lasting fever as a rule was not caused by complications in the part of the lun"s as was supposed first, but by an accumulation of pus. An insuffi- cient outflow of pus after lattice-plastic is observed quite freeuently. This is the most important cause for in- crease of temperature after the operation. 22 After lattice plastic fever sometimes occurs y/hich is not caused by those two complications mentioned before. It is possible that it is caused by, the ab- normal washing oui of toxin, which is created by mobilization of the thoracic wall and the formation of soft-part ligaments. One must also think of the develop- ment of an infection from little foci of pus in the nlenral callus, where they remain untouched in contrast to SCHEDE’s plastic. Whatever may be the cause of this postoperative increase of temperature, a copious dose of sulfonamides as a prophylactic is recommended; aftertreatment First attention should be given to avoid the post- operative shock and the froeuent occurrence of scconiaby hemorrhage. The methods of ireatmont, which have to be used, were mentioned before. But this does1not clcse the discussion about aftertreatmentj several other points have to be considered; Immediatcly after the operation, an effective massage is recommended. Thus the substance, which according to HENDERSON stimulat s the respiratory center physiolo •• i c a"1.ly, becomes disengaged, and the pulse gains strength, Fresh- ly operated patients feel better by Improved circulation. It is of advantage to continue the massage every day, until the patient can got out of bod. As mentioned before, a well fitting pressure bandage has to be ap lied after the operation. In most cases it has to be renewed only after 6-8 days. A careful survey and observation of temperature and pulse is essential on account of the danger of phlegmons of the thoracic wall and the possibility of accumulation of pus . Even on renewal of the first bandages it is recommended to apoly slight pressure so that the strips remain well pressed against the pleura pulmonary. If this is not done, new cavities between these two parts are favored. The outflev/ of secretions, however, mu?t not be hindred, Sometimes it is not easy to find the right way betwen these two alternatives. It often depends on paying attention to the outflow of secretion, if a second operation after the lattice plastic will be necessary or not. The treatment of the wound docs not show.any pecu- liarities. Recovery often progresses astonishingly fast. In oth'r cas s the secretion of pus sometimes continues for a long time with inexplicable causes. The early starting of irrigations has to be made with every change of the bandage. For this purpose Rivanol has turned out well. The effect surely is only mechanical. It has to avoid the danger of even small accumulations of pus, a matter /be ch must not be underestimated after a lattice clastic. In 10 to 15% of the cases abscesses occur during and even after the healing of the wound of operation, which break open spontaneously and therefore are better opened in 23 time* In all probability they form between the stripes or result from little foci of pus which may exist in the callus of the pleura, sometimes only visible by micror scope. In cases of patients, where the secretion of pus continued longer than usual, we had good success by treating the field of operation with diathermy. This treatment should be taken before each renewed operation if the filling of the fistula by contrast medium shows no new development of a cavity. This method of examination should be used frceuently, if the healing of the wound is delayed, or secretion of pus continues. It often re- veals surprisingly romified cavities where further de- lay is dangerous and scraping out of the fistula is of no use, but only a renewed operation performed in time may bring recovery. Breathing gymnastics should be started, as soon as the pains of the wound ease. It can be observed in some cases that the lung extends: again after a lattice plastic. Exercise in moving too, has to start in time. If this is done, no restriction in the mobility of the arm remains that is worth mentioning, even after a total empyema residual cavity* A still more important task is to aveid Scoliosis, It develops always after 10HEDE i s plastic, but never after lattice pla tic. It is seen occasionally in a minor degree, but then it never in- jures either the functional or the cosmctical result* It is necessary and can be accomplished easily to preserve the long dorsal tensors and leave the trans- verse processes untouched in the operation. It is certain, that especially after the removal of an empyema residual cavity an appropriate and copious nourishment adds much to a quick recovery and healing of the wound. As we saw in this aspect of disease, the supply of protein is frcruently diminished by different influences. Therefore special stress should be laid upon giving food rich in protein and vitamins. Host generally a sulfonamide treatment is tried when temperature increases from possible bacterial causes, I do not know to what extent a treatment with penicillin may improve recovery faster and eliminate various other dangers. In case of one patient wo saw favorable in- fluence, In one session I had removed his right inferior and middle lobes on account of bronchiectases. Thereby a medium sized residual cavity developed, which I tried to remove by means of a lattice plastic. After the operation a long lasting suppuration with an inexplicable increase of temperature remained, which could not be decreased by treatment with sulfonamide. His condition weakened by bronchiectasies, lobectomy, the empyema residual cavity and the following lattice plastic remained unsatisfactory for weeks. Due to tho interest, which the removal of two lobes of the lungs in one session still has today, I was supplied with penicillin, of wh: ch the patient got one million units, liter this remedy was given, the temperature decreased and complete recovery followed. The success of penicillin was im pressiva, I am inclined to believe, that the use of penicillin, especially after lattice plastic will be of great value in many regards. According to our discussions about the value of blood transfusions for preparation it is understandable that this method of treatment is one of the mist im- portant remedies even in the treatment after an oper- ation. In case of good general condition, normal postoperative development and quick recovery, the body disposes of sufficient resources of its own. If there, however, is ctrong and long lasting secretion of pus, accompnaied by fever, the reserves of protein, already diminished before and after the operation ore quickly totally exhausted in case of empyema residual cavities. As the deficiency of protein cannit be supplied by parenteral sources alone, symptoms of deficiency of protein appear again. These are also displayed as we observed, by a decrease of erythrocytes and hemoglobin. In their analysis we have a valuable means to judge the pro- tective power of the body, or its damage respectively. Anaemia delays the healing of a wound. It has to be eliminated by blood transfusion, if the resources of the organism itself are not sufficient. Indication is based on the analysis of erythrocytes and hemo- globin, which must be repeated after every plastic so cne can perform a blood transfusion in time and some- times more often eiren during the after treatment, So we are able to cure the wounds more rapidly and gain faster restoration of health. POSTOPERATIVE MORTALITY Thoracoplasty to remove empyema r sidual cavities is connected with the idea of an operation with an immense death rate which in case of success leaves a con- siderable cosmetic deformity. This opinion is chiefly based on the previous experiences with SCHEDE’s plastic. With this method of treatment the mortality rate amounted to ch during the first World War, according to SAUER* BRUCH, In the meantime the results have been improving. During the last war DEMEL operated 22 empyema residual cavities without any casualties (cases of death). By the time he made his report, hoY/ever, the aftertreatmenii of all cases had not been concluded yet and three of his patients still had large bronchial fistulae. No notable experiences have been made yet about lattice plastic, SALZER and SARAFOFF only oulished their observations on a small number of cases. There- fore the quest:'on as to the mortality rate is of special interest in so many cases as we h.ve, considering that our patients could be observed until their final cure and even afterwards. 25 If one imagines, that in the first hundred cases treated with HELLER1s lattice plastic, only three patients died, this fact has to be registered as an immense pro- gress in eliminating the dreaded aspects of disease of the empyema residual cavity. A mortality rate of 3% would be tolerable. But even this small percentage here is not due to the method of operation but caused bjr deadly complications which cannot be brought into definitely causal connection with the operation itself. This may be clearly seen in a short survey of those three patients who died after the plastic: l) A 28 year old man. On December 29, 1942 he received a small arms gunshot w:th the bullet lodging in the right thorax. A pleural empyema fol owed* Afterwards we had to perform a re- section of ribs. In spite of suction treatment, an empyema residual cavity developed. On July 2, 1943, lattice plastic was made, after the 5-9 rib had been resected* (length of ribs re- sected 74 centimeters). At first the post- operative Carrs'- was normal. On July 28, 1943 the patient started to vomit and on 29 July he got headaches. His general condition worsened suddenly on the first of August 1943 and showed meningitic symptoms. He died on August 2, 1943* The post mortem examination showed; Pj§,£.£_. foration cf an older abscess in the left frontal i nt o_ t h e_ la t era l__y e n t r i, c 1 eA 2) A 29 year old man was severely wounded by a bomb splinter in the left side of the thorax on August 12, 194-2, Two cavity gunshot, A pleural empyema developed which was treated by resection of ribs and suction drainage. In spite of all treatment, however, an empyema residual cavity remained. Then an abscess developed around a splinter below the diaphragm. Surgical exposure and drainage. On May 17, 194-3, another operation a as performed on account of suppuration below the diaphragm. On December 7, 1943 we made a lattice plastic on account of the empyema re- sidual cavity. Ribs 3-9 were resected sub- peri osteally. The length of the resected ribs was 87 centimeters. For three weeks the post- operative course was without complications or fever. Then a sudden increase of temperature occurred followed by chills. Repeated revision of the field of the plastic without satisfactory findings. Finally a large subphrenic abscess was opened. Septic general condition, not in- fluenced by any means. The patient died on Feburary 20, 194-4-• Rest mortem examination showed that the thoracoplasty was generally in order. It was connected with the abscess cavity, situated subphrenically and including the spleen. The diaphragm was partly destroyed. Nowhere retention of pus. Small abscess ~n the left tem- poral lobe, £ause„pjLdeatfe.l Sepsi_s, 26 3) A 29 year old man was wounded on August 19, 1943 by machine gun shot, which r sided in the right lung. A pleural empyema developed, A resection of ribs had to be made. An empyema residual cavity developed. Thoracoplasty.was made on July 5, 1944. 2-B ribs were reselted subperiosteally, Right after the operation considerable continuous increase of temperature begun. Temporary suspicion of a relapse of malaria. Field of operation without finding* On August 19, 1944 headaches and subseouent somnolence. On September 10, 1944 hemiplegia and death. Post mortem examination s owed a large multilscular abscess in the right frontal lobe. Residual cavity was closed, only a small fistula was found. Cause of death; Cerebral abscess If we consider critically these three pathologic© anatomical determined causes of death, we observe,that i 'no case the operation can be made responsible for the fatal ending. According to the post mortem examination the first patient had the cerebral abscess even before the operation, while in case of the third patient it probably developed after the plastic and thus caused the fatal end. In the second case, it was the consequence of the two cavity gunshot. The origin of the sepsis was not the empyema residual cavity, but the subphrenic suppuration. It is remarkable that the temperature of two patients was normal for weeks after the operation until the symptoms of the complications which caused the death, could be observed. Autopsies showed in every case that the field of operation was in trder or even already cured. In no case was a retention of pus in the thorax found or could any connection between the lattice plastic and cause of death be surely prcved. Our three failures have to be regarded as fatal events, as they could not have been avo ded with any other kind of operation. Far more important than this statement I regard the fact resulting from the short descriptions of the origins that caused death, that never was, not even in a single case, neither shock nor secondary hemorrhage, hitherto especially dreaded as the most important postoperative complication. With all pulmonary diseases, even after the removal of splinters sticking in the lung, the danger ef metastatic cerebral abscesr es is threatening, as they were found in the post mortem examination of all three patients who died after the lattice plastic. Sven in case of this grave aspect of disease it is possible to help by diagnosis and operation in time, as soon as the localization can be made. Perhaps in one »r the other of our cases quicker action might have been appropriat e, 27 In case of pleural empyema and its seouel, raenin-- git is may occur occasionally besides cerebral abscesses, C, BAUER described two impressive observations where he could prove the two important ways of infection, In one case the suppuration had perforated from the thoracic cavity into the central canal »f the spinal cord. In my findings of operation I already pointed out the collection of ous in the joint between ribs and ver- tebral clumn. In the second case a basal meningitis existed. By preparation during the section its origin could be proved on the level with the empyema. The intercostal nerves were considered responsible as the way of infection. I personally observed some cases of fatal menin—• S±t±s in case of pleural empyemae and with empyema residual cavities which had not yet been operated upon. In the chapter ''Preparation'1 I already mentioned the importance which these complications as well as those of the metastatic cerebral abscess have on the choice of the time of operation, hang like thc sword of Damocles over the patients with empyema residual cavities and over the results of the surgical operations. Prob- ably symptoms of meningeal irritation occur more freouently. Before and after the operation patients often complain ab*ut pains in the neck and headaches, Fxplanations can be given by lumbar punctures, and various modern medicaments might sometimes prevent the development of a r al meningitis, it any rate, both cerebral abscess and meningitis require medical action and no passivity. Therefore, the surgeon who has t» do with operative treatment of empyema residual cavi- ties must be thoroughly familiar with these two com- plications and their origin. The three cases of death we had among the first hundred of our »perations wrre caused by unavoidable accompanying diseases. In our further cases of lattice plastic, mortality did not amount too much. Up to date, we lost two patients after the operation. Though their cases have nothing to do with this report, I should like to give a short extract because it pfoves, that lattice plastic alone does not succeed, but that greatest care is renuired to obtain outstanding results. 4) A 21 year old man was taken ill on February 2, 1943 of spotted typhus, followed by pneumonia and pleuritis. In spite of resection o~ a residual cavity remained in the right side. On April 25, 1945 lattice plastic was made. ! ultilocular system of cavities with bronchial fistula developed. Ribs 2-8 were resected sub- periosteally, In the days after the operation the patient was strangely restless, the tem- perature was slightly increased, and the pulse moderately accelerated. He died on Mey 6, 1945, Autopsy was impossible. Cause , of deat;h \ Sudden pollapse off circuXatJ4pjqA 28 5) A 2A year old man was wounded by shell splinter in the right thorax on January 23, 1945, A pleural empyema developed. We applied BUFLAll’s drainage system without resection of ribs. An empyema residual cavity developed. We made the lattice plastic on January 18, 19-46 and resected 4- ribs sub- peri o st eally. In addition to that was a gas-containing, putrid infection of the thorax, going down to the thigh and spreading there. Incision was made in vain. The patient died on January 26, 1946. Cause, .of death; Failure .of circulation. In case J+, the cause of death is obscure* After the extensive thoracoplasty neither shock nor second- ary hemorrhage was observed. In the days following the operation the patient showed a strange motor restless- ness, Possibly external influence effected the patient unfavorably. After the operation the patient had to be moved to a hall were many prisoners were crowded together. Our trained staff was not allowed to take charge of the nursing upon which so much depended. We used to place all the other patients with thoracoplasty in small, single, and w~ll aired rwoms. Perhaps the basic (original) disease may be traced as the cause of death, I observed several times that patients who had serious spotted typhus could generally not starid major operations very well. Finally the fact that the residual cavity had al- ready existed for two years may have been of in- fluence, It is regrettable, that in this single case, where death was probably solely due to the lat ice plastic, we were not able to perform an autopsy. Perhaps in this case too, a cerebral abscess caused the fatal end. The cause of death is very clear in the fifth case. Being exhausted aft-r finishing the plastic, I ordered an experienced assistant to finish the operation by some sutures. Against my strict orders he sewed skin and muscles near the drainage tube and the striae so tightly that the secretion could not drain out and therefore a gas-containing phlegmon of the thoracic wall developed, which caused the death. This case shows, that success often depends upon trifles in technioue and greatest care in the aftertreatment. This robust patient could almost surely have survived the small plastic if this mistake had not taken place. Summarizing the causes of these five death once more, we must state that the lattice plastic is with- out special dangers. The mortality rate is low, compared to the gravity of the disease. If a patient dies after the operation, this is nearly always an inevitable event, if no unavoidable mistake has been mad©. 29 THE RESULT OF THE OPERATION Judging the results of the operation we have to consider several points of view. The duration of treatment after the lattice plastic reveals clearly the usefulness of the method. patients re- covered so rapidly, that they could be discharged from the clinic within U weeks after the operation. Most 4f the patients, 4-3 exactly, hald to stay in the hospital for 8 weeks, 22 for 12 weeks, 12 for 16 weeks and the rest even longer. Though in some cases suppuration occasionally continued a long time, the period of treatment after the thoracoplasty is generally short. It cannot be explained what causes the great differences in these cases. There is a certain disadvantage in the later develop- ment of abscesses in the field of operation* The wound of one patient had been healed for 9 months al- ready, This late complication could be observed in 12 patients. After drainage, the abscesses generally healed without difficulty. They start from small foci of pus which have apparently remained in the field of the plastic, or exist in the cal1us itself. Sometimes small residual cavities develop which may even require a secondary operation. Ai any rate the probability of a later development of abscesses is so great, that patients should be informed about this possibility, or, even better should be asked to come to secondary examinations periodically. By exact inouiry we are able to find out with cer- tainty the cases where the wound of operation had healed externally but inflamraed f©ci existed underneath. The sedimentation of the blood corpuscles may be normal, but the red blood picture gives better information. A slight anemia means toxic damage and thereby the existance of a suppurative focus. According to our experience the best means of finding out consists in watching the general condition of the patient and in asking himself. In- creasing weight after the thoracoplasty is a very favor- able ©men. The same holds good with regard to the appetito, 1f the patients compl&in about anorexia, in- sufficient convalescence, bodily weakness, or easy fatigue, one can be sure of a suppurative focus in the body. As a proof I should like to ad an instructive ob- servation. After the thoracoplasty one patient com- plained about the above mentioned troubles. An abscess formed, which was incised. But even after healing the patient still complained and the bad general condition remained, I therefore reopened the field of the former abscess and found a small hidden empyema residual cavity. To find such hidden foci renuires experience in this field and some luck. After two ribs respectively their regenerates had been resected subperiosteally, the focus healed quickly. This was followed by excellent recovery, good appetite, increase of weight, and a decided improve- ment of productive power. As my experiences proved 30 impressively in such cases one should not hesitate to perform a secondary operation, even after an apparently successful plastic. In no case have 1 ever regretted a secondary operation. But the following oase proves that caution should be taken: A patient did not recover well after thoraco- plasty, It was suspected that a suppurative focus had remained in the thorax and a secondary operation was taken into consideration. indications for a second operation were not entirely fulfilled, so we desisted from it. Finally another cause for the symp- toms of disease was found. After nine months, a lymphogranulomatosis developed on ace out of which the patient died soon afterwards. Not every abscess developing afterwards should be regarded as a consecuence of lattice plastic. Visiting another hospital once I was shown a patient whom I had operated before and who was said to have a relapse respectively an abscess in the field of operation. The fil ing of the fistula revealed, that the suppuration had nothing to do with it but was caused by a shell splinter which was not removed in the operation 111, 15, In the case of another patient in our- clinic, wo had to remove a shell splinter two years after the plastic, because of symptoms of inflammation, Missiles generally heal in without complications. As the plastic is no simple operation, we do not se~k for thorn. If the splinter is easy to find, it should be removed to avoid another operation, as happened in the two cases mentioned before, By careful after treatment and good food we are able to avoid the danger of a renewed collection of pus in the field of operation. The small foci of inflammation between the striae or in the callus heal auickly, if the power of resistance of the body grows strong enough, I saw some impressive cases, myself, which proved this in- directly, After a successful thoracoplasty and discharge from the hospital, one of my patients was taken prisoner. He had to stay in an open field for weeks without suffi- cient clothing and food. This caused an inflammation in the field of operation connected with a marked suppur- ation, In case of another fully recovered patient who was not operated in my clinic, I observed a similar re- lapse, Several operations had oroceeded4 After some week’s stay in the oepn with insufficient food which caused death by starvation of many soldiers, a secretion of pus from all scars in the field of the thorax began to an extent I had never seen before. If one has met with such negative cases, one can easily estimate the value of good food during the after treatment, which should be given after every cured thoracoplasty. Contrary to cases where late abscesses develop after the patient was discharged from the hospital, it some- times occurs that the healing of the lattice plastic is delayed, or even a residual cavity remains, kith 5 patients we did not succeed in obliterating the re- 30a Illustration 1$ Shell splinter, causing an abscess one year after the lattice plastic. At first the abscess was regarded as a consequence of the thoracoplasty. 31 sidual cavity with one operation, but had to perform second operations, 8 of our patient had a plastic before by another surgeon, I intend to discuss these 13 cases in another chapter as naturally the causes of these failures and the ones of the secondary operations must be examined very carefully, to find out if they were based on avoidable mastakes. To judge a new method of operation, not only the immediate but the lasting result is important. We therefore tried to watch our patients even after their discharge from the hospital. The months following the discharge we succeeded in doing so. Nearly all of them came back for a late examination or otherwise were sent to us. About 90% of the patients reported to us the seouel of the operation during the first following year and sometimes even during the second one. On account of -the influence of war we were not able to obtain complete reports, but the particulars we have are sufficient for our purpose. In several chapters we already stated some interesting observations about diseases after the lattice plastic. Little can be reported about consecutive disease. To our surprise we never found an amyloid kidney. In the case of one patient a nephrosis developed several months after discharge from the hospital; freruent tests of urine before and after the elastic had shown a negative finding for albumin. With another pat?out an exo- phthalmic g• itre developed, the cause of wi ch was probably favored by the preceding long period of suffer- ing. Some patients showed an inclination* towards bronchitis. In one case with a total plastic only it was purulent and could not nuite be cured* It is astonishing, that after an often extensive collapse of the lungs and the distinct formation of callus this ■ complication does not occur more freouently. fhst patients stated in the late examination that they felt fik for wofk again* A very freouent Complaint was shortness of breath. Reduced productive power was only stated by patients with total plastic, especially one in thb right side of the thorax. Contrary to this, patients with partial plastic regained their full strength after months and sometimes even after years of having suffered the greatest hardships and bodily strain. It is not easy to judge the protective power after the lattice plastic. If the surgeon is asked to do it, he predominantly must rely on the statement of the patient, as is to be seen in the discussion of the success. If possible, a spiro.graphical examination should be made. One of the most important advant:, es of lattice plastic compared with SGHEDE's plastic, is, th?.t with the first one mentioned n# paradoxical respiration remains. One could draw the conclusion, that the lungs functioned better. AMFLUNG performed spirographic examinations but did not find any basic difference between the two methods. We must st .te on the otker hand, that the number of cases examined is too small 32 to be fully convincing. Clinical experience in cases observed for years is against it too. Therefor- a re- newed examination is desirable. Most striking is the cosmetic result. After SCHEDEls plastic severe mutilations of the thorax re- main. This is not the case in lattice plastic, as shoulder girdle, and shoulder blade the fjrst and usually the second rib arc preserved and no scoliosis develops if the after treatment is carefully done, (111, 16)* Another highly important advantage is the preservation if the Intercostal nerves. Therefore no paralysis of the muscles of the abdominal wall occurs which has an unfavorable influence on the work capacity after SCHEDE’s plastic* According to OEHLECKER*s examinations, even the sixth intercostal nerve has to be preserved. KON- JFTZNY also has lately tried to preserve the intercostal nerves in his plastic. REPEATED THORACOPLASTIES AND SECONDARY OPERATIONS Unfortunately lattice plastic does not in every case result in the obliteration of the empyema residual cavity, A second thoracoplasty was necessary in case of 5 patients, whom I had operated myself. In our hospital we have 8 other patients who had had an un- successful thoracoplasty-which was not made in our aline - before. It is highly essential to examine the causes of those failures, because one can learn best by one’s own and other’s mistakes. Among my own failures one can observe me case, that clearly and impres sively shows one disadvantage of lattice plastic. On a 16 year old boy, 5 months after the resection of ribs, we had to perform a lattice plastic on account of a metapneumcnic pleural empyema to remove a small residual cavity. However, we did not succeed. Three more plastics, partly according to HFLLE, partly to SCHEDE and the removal of the transverse processes were necessary t# gain a final result. After the first secondary plastic a large cavity had developed again, which caused suppuration. This result was miraculous, as no technical mistakes had been made in the first operation and the striae filled the cavity well. At last we succeeded to obtain a cosmetically and functionally good result. But difficulties and relapses caused us to reflect. How was this to he explained? I rendered special attention to this ouestion. According to my experiences up to now it is based on a cu'ck power of regeneration of the periosteum of ribs which is especially expressed in young people. In this age, it takes a short time to form new ribs. If a suppuration develops after lattice plastic and the st'iae do not stick to the surface of the lungs, the ligaments of the soft parts be- 32a Illustration 16* STosraetic and functional result after lattice plastic in a total residual cavity, a)X-T0.y picture of the res5 dual cavity Illustration 16 b, c, could not be reproduced with the facilities available. Condition after plastic with Picture from the front, preservation of the first and second rib. 32b Illustration 16, a y e could not be reo»oduced with the facilities available. Illustration 16 Picture from the side, '96 Picture from behind. 33 come bulky and finally stand off in such a way, that once again large cavities can develop beneath* them; The cuick development of regenerated ribs is also a cause of long lasting fistulae and sometimes even secondary operations as wo shall see* It should be considered therefore, if the power of regeneration of ribs should be stopped or delayed as is done similarily in ca.se of thoracoplasty, because of tuberculosis of the lungs* The problems are ruite the same as those with empyema residual cavities* MAURER uses a 10b solution of formalin for this pur- pose , MEISS proved by experiments that the regenerate tten power of the ribs can thus be delayed, without damaging the pleura. Up to now I could not resolve to use his met' od, although it is said, that it does not influence the healing of the wounds unfavorably* According to LOUBAT and MAGFNDIE the regeneration of ribs can bo delayed for 2 to 3 months, by spreading a solution of tannin over the periosteal tubes, which means, that the tissue has time to shrink. However, this proposal has to be examined, because SAUERBRUCH states, that the retraction of the lungs continues for 2" to 1 year, and that the ligaments formed by the lattice plastic stay limp and flexible for a long time* The second cause can be traced back to an ab- normal stiffnc s of the striae. It can be observed especially in case of a strong development of callus. It is understandable, that SALZER prefers the tcchnieue according tfc SCHEDE, if the pleural cal us is thicker than 2-k centimeters, When using this method one sacri- fices valuable mat rial for filling. To increase the flexibility of the striae under such circumstances and to obtain a good filling of the cavity, I lat ly have removed the callus tissue, especially at the inside of both places whore the striae are attached. So the li- gaments become bettor attached, even if the pleura is markedly thickened and one has the impression that a new development of a cavity can be avoided by elimi - noting the unsuitable shape of the filling material. The two first sources of mistakes w e based «n the method itself, which does not apply to the twfx other ones, The third cause is failure tt Observe 'accessory cavities which many times arc connected only by a small fistula with the main cavity. This danger can bo avoided only by greatest caution and experience. One should not under- estimate it. The fourth mistake is favored by the tendency to make the plastic as small as possible. Thus, either too small pieces of the ribs, lying over the cavity are removed, or not enough ribs will be re- sected, In case of a patient we had to remove 2 more ribs in the field of the first plastic done in one session because pus had collected behind them like a lake. In the first session wr had the impression, that the conditions for the outflow of.pus would be favor- able, I have observed this same event several times lately. This is apparently favored by shrinking of the lungs after lattice plastic, where the ribs below, which have been preserved, cause retention of pus or development 34 of cavities by interception which were not expected according to the findings at the time of the thoraco- plasty; On a cured patient one can sometimes observe an abnormal standing out of the lower costal arch and the preserved ribs below the field of the thoraco plastic, by which this occurrence might easily be explained. In case of 4 other patients wo were, not to mention an occasional scraping out of fistulae, forced to per- form secondary operations, which cannot be called secondary plastics according to their extent. In one case a small abscess cavity developed b'neath a pre- served rib. In other operations we had to remove regene- rates of ribs, which prevented the falling together in the depth bjr the thick callus tissue. Under these circumstances the callus cannot shrink sufficiently and thus supports the cavities in its field. For fistulae and suppuration which often remain for a long time, the same causes have to be made responsible as the ones leading t# the development of largo cavities, ?/hich sometimes recuire another plastic. Furthermore the possibility has to be taken into account that small »us and inflammation foci arc i n the pleural callus which can lead to a secretion of pus or formation #f fistulae after a lattice plastic. Therefore it should be considered, . in case of thick callus whether part of them should be removed at the inside of the ligaments and thereby eliminate the changed, most inflammable field, I tried this in some recent operations without up to no?/ being able to say anything about the final result. The preservation of the thickened lateral callus of the pleura and its use for filling out the caVity does not only have advantages, but disadvantages too, but without doubt, the advantages generally prevail* This discussion reveals, that after a lattice plastic one cannot depend on too much success if fistulas are scraped out* If secretion of pus continues for some time, it is recomrended to clear the canal of the fistula for comprehensive view, (111* 17)* Sometimes it is possible by meats of X-ray of the fistula which should precede each operation, to find at its end in the depth of the thoracic wall a cavernous enlargement, sometimes even an osteomyelitis of the ribs or a secuestrum of bones which are the catse, The origin of the pus has to be removed and by re laxat ion of its callus thickened surroundings the focus of disease must be enabled to close by shrinking, which sometimes is rather difficult. Though fistulao existing for a long time may close them- selves and little cavities of pus encapsulate in depth, I nevertheless advise an active attack. Lately I have performed more frequent operations and up to now I have never regretted y more energetic action. The eight thrracoplastics, of which the first ones had been performed without success i n another clinic do n#t have the same importance as our o?/n observations, as one cannot foil#?/ fhe procedures by reports about findings and soouel especially in case of operated 34a Illustration 17 Could not be reproduced with the facilities available. Illustration 17 Filling of a fistula with renewed formation of a cavity after thoracoplasty. All stumps of ribs were left too long empyema residual cavities. We therefore should be careful with our criticism. With 2 of these 8 cases a lattice plastic had preceded. With one patient , who had a total residual cavity, wo tried to close it by an extended subperiosteal resecti of the first - to third rib, removing the transverse processes at the same time. Thus the cavity diminished a little, and could only be eliminated by a lattice plastic. This com- bination of the methods of FSTLANDRR and sometimes is justified and saving. Apart from this case I saw several other patients thus operated in two sessions. But a repeated resection of ribs reauires considerable strain. Two other secondary plastics were caused by costal osteomyelitis. Besides this not enough ribs had been removed and furthermore the pieces of the ribs removed were too small. In case of the remaining 5 patients, the posterior back stumps of the ribs had been preserved in abnor- mal length as we can see in 111, 17, This is a most im- portant but avoidable mistake, which can occur in case of surgical removal of the empyema residual cavity, if the basic rules of thoracoplasty are not generally known, BOIFFIN through his student GOURDE! proved already in 1895 with excellent examinations which are still of value today, that the compression of the thorax can be best accomplished by removing the posterior angle of the ribs, SAUFRBRUCH and BRAUER always point d out the importance of paravertebral resection of ribs for the collapse of the lungs. It is understood, that for the treatment of tuberculosis of the lungs one has to have exact know- ledge of the numerous surgical proceedings which ho has to know too for the removal of empyema residual cavities. Setting aside this technical error, wr must summarize that only one important avoidable causa for the failure of thoracoplasty and its repetition can be made respon - siTale: Too small an amount of the resection of ribs or the removal of not enough ribs. Though one endeavors in every plastic to render the operation as preserving and small as possible, one should always face this fact in every plastic, lattice plastic as well, and the removal of empyema residual cavities CONCLUSION If one occupies himself thoroughly for years with empyema residual cavities, and operates far more than 100 patients with a method scarcely known hitherto, one should like to discuss points of view which seem to be important in special chapters. It could,however, not be avoided, to state some remarkable facts in different chapters before. Concluding this, I should like to point them out and show their importance. 36 First of all wo have to mention the blood transfusion. Its value is increasingly acknowledged 5n case of pleu- ral empyema and its sequelae* K* VALENTIN pointed out that since taking up this method of treatment for pleu- ral empyema in juvenile ago, the mortality rat© rapid- ly lowered* The false doctrine, prevailing for a long time, that blood transfusions, used for diseases in the field of the pulmonary circulation was a mistake, seems to be abandoned. Blood transfusion can in no case be eliminat 'd for the preparation of the ope ation of emoyema residual cavities, for fighting postoperative shock and for the after treatment after the operation* Its <• roa.t importance can be understood fully, if one deals with the problem of the disease of protein deficiency, which may be fatal in case of pleural empyema. Such great and import ,nt progress in the theoretical and practical way has never been obtained in any field. Owing to this a reference to the methods, concerning blood which is scattered over some chapters, seems to be useful. The use of X-ray examination telcos a special value for judging the rmpyema residual cavities. It is asso- ciated with several sources of mistakes. Pictures must always be taken from two sides. The cavities are regularly larger :• n the operation than they appear in the X-ray picture. Accessory cavities are usually not to be seen at all. An X-ray picture may give full information on fistula after plastic, The discussions of numerous special and rare aspects of disease should be of great interest, .The closed re- sidual cavity v;ithout bronchial fistula is not very well known, but the hemothorax residual cavity, recently des- cribed by me, is entirely unknowh. In case of three patients empyema residual cavities have been discovered, which had boon operated later on* ;ihoy had 7, 11 respectively 25 years before suffered from pleural empyema and after having had a resection of ribs, an ostensible recovery had been obtained during such long ncri-pds of time. All these observations show that the empyema resi- dual cavity offers oven clinically many interesting problems, but as we deal almost entirely with technical operative ouostions in th^s volume, we have to renounce the discussion of the oth~r problems. SUMMARY Aft r having critically discussed the so far used methods for removal of the empyema residual cavity, wo should like to to the new Procedure «f lattice plastic which, after having the experience of 150 oper- ations with a low mortality rate, enables us, to close every residual cavity with excellent cosmetic and function- al results. In this volume we described the observations of •ur first 100 plastics of which 71 were partial and 29 total cavities. 36a a State before the second thoracojilastlc • Empyema residual cavity is filled with Thorotrast, b Findin:'t: after success- ful second thoracoplasty with removal of the posterior stumps of ribs. Illustration IS Abnormally long posterior rib stumps as cause of unsuccessful thoracoplasty. 37 The cause of the empyema residual cavity was responsible 27% due to a mistake in the drainage, in 25% by too long continued puncture and rinsing, in IB/o by a closed residual cavity, in 16% by a bronchial fistula, in 6% by an osteomyelitis of ribs, in 3% by an acce sory cavity, in 2% by bad gen*ril condition and in 1% by a foreign body, while tuberculosis has been dis- covered in 2 patients later on. Such changes may happen, and for that reason cxploratary excisions should be taken before each plastic. Treatment with strong suction should be tried before each operation. The time for the operation has arrived, if the X-ray picture of the residual cavity shows no decrease in size of the cavity over 4--S weeks. The preparation f»r the operation is of great im- portance* First of all wo have to take care of an ex- tensive detoxication, furthermore all damages caused by chronic suppuration should be eliminated* Very fre- ouently a protein deficiency is present which cad be detected in the changes of the blood; in which case a blood transfusion is necessary. The lattice plastic should be carried out with local anaesthesia. This can be done in about 90% of all cases, sometimes a slight ether anaesthesia in addition is necessary. Sometimes a combination of HELLERand SCIIEDEis plastic has te be considered. In cases with thic1: and rigid callus we recommend to excise some parts of the inside, especially at the insertion point, to male the strips more flexible. Only once I had to resect the apex of the scapula. Bronchial fistulae do n»t rceuire special methods of treatment in case of lattice plastic and usually heal by relaxation. Only twa patients wore operated in two sessions. With total cavities we always can preserve the first rib and sometimes even the second one. The lung tissue always shows good recovery after a lattice plastic. To judge the danger of the operation it is necessary to give number and length of the removed ribs. Shock and secondary hemorrhage were the most important postoperative complications before. They can be avoided by immediate blood transfusion after every plastic or in the course of the after treatment, and by experienced treatment do not end fatally any more. The knowledge of the protein deficiency contributes essentially to its better und o r s t a nd i ng, After lattice plastic the further after treatment is very important. The effect of an immediate start of massage is favorable. Breathing gymnastics, exercise in moving the arms and the vertebral column have to start as saon as posible. Blood transfusions too, have to be con- sidered freouently. The treatment of the wound roruirss special care, sometimes rinsing. 38 The mortality rate was 3%. No death was caused by the method of operation. There was a discussion about metastatic cerebral abscesses and the danger of meningitis * The time for treatment reouired after the operation is usually very short. Quite freouently late abscesses develop in the field of operation. Sometimes foci of pus remain in the depth. The general condition, appetite and increase of weight are more important for the judgement than the blood picture and bloo£ sedimentation rate. One should not be hesitant about secondary operations. The permanent result of 90% of all patients who have been operated has been followed for the first six months after the operation and by others even for several years. The functional ability can be discovered spir•graphically, The advantages of HELLER*s plastic, compared with SCHEDE*s plastic are: No remaining paradoxical respiration, no paralysis of the abdominal wall, excellent cosmetical and functional result* The plastic did not lead to any results in case of 5 patients. The cause was clue to the method* The failure depended upon too quick regeneration of ribs, abnormal stiffness of the strips in the thick pleural callus, overlooked accessory cavities and t»o small an extension of the plastic. Besides this, 4 secondary operations were necessary in order to dry out long lasting suppurations. The causes were similar to those of the secondary plastics. The causes of the failures of 8 residual cavities, operated outside of our hospital were mostly abnormally large posterior stumps of ribs, or a too small extension of the first plastic. An osteomyelitis of ribs occurred twioo, Concluding I should like to point out the exceptional position of the bl»nd transfusion in preparing the oper- ation and in the after treatment as well as X-ray examination. Some special pictures of the momentary state in case of empyema residual cavities are displayed. It might be important to know, that vrith no patient, hospitalized in our clinic has a plastic been refused or not been carried through. 39 LITERATURE ALEXANDERj Johann Chronical suppurations of the pleura at first trivial, later proving to be tuberculous. Arch, med* chir, Appar,resp*8 1-10, 1933 AMELUNG Aspect of disease of a man shot through the thiraX, proposals for treatment in the homeland. Arch, din, Chir* 206, 144-170, 1944 AMELUNG and A4MEYER The clinical importance of spirographie, its special use as pulmonale and car- diale examination of func- tional ability in case of patients shot through the lungs, Beitr, Klin, Tbc, BAUER, Curt Treatment and complications of pleural empyema©. Arch* din. Chir. 168, 269-283, 1931 BEHREND, Albert Specially chosen part- plastic of the thoracic wall and pedunculated muscle flaps in the treatment of chronic- suppuration of the pleura. Surg. 72,87-91,1941 BERNHARD, Fr, The surgical treatment of the empyema residual cavity, Zbl, Chir. 194-3, 1802-11 Late consequences after shots through the lungs and their surgical treatment, Zbl. Chir. 1944-, 17-23 The haemo-thorax residual cavity,(Eelng printed). BISGARD, I.D, Ribs lying above the empyema residual cavities, A pathological study. Arch, Surg, 27, 94-1-959, 1933 CHAXIR, Ahif The treatment of empyema residual cavity of children by muscle flap after re- section of the scapula, Zbl.Chir.1937, 1470-1471 uo - DEMEL, R* The importance of a radical surgical operation in time in case of post-traumatic empyema residual cavities of the thorax, Zbl, Chir, 1944-, 159-162 DUESBFRGj R, Blood transfusion as paren- teral suvs . itu.ti on of pro- tein with protein loss due to suppuration of heiaor. 1- rhoge, lin, '.rschr, 1943 FGGERS, Carl The radical operation of the chronic empyema. Annals of Surgery 77, 1923 337-353 , The chronic empyema, etiol, path* compl. treatment and results (Duration)* Ann* of Sung. 77, U2-170, 1923 PICK, W. Clinical experiences, lately observed, about procedure and treatment of the pleura empyema, Med, Klin, 1939, 460-464- FROLOV, V. About a case of phrenico- tomy with an old empyema of the pleura. Ref, Z.0, 38, 57$ 1927 GAY, Fr, and CLARK, A.R. About the mode of action of sulfonamides on the experiment.'.! streptococci empyema, Journ. of cxncr, Med. 66, 535-548, 1937 HELLER Prophylaxis and tr'atment of empyema residual cav, Chir. 1934-, 297-302 KJAER, Taye Treatment of chronic suppu - r.otions of the pleura accord, to ROBERTS. Red.Z.Org.104-, 78 (194-2) KLEINSCHMIDT Operations of the thorax and thoracic cavity, -IRSCH- NER* s doctrine of opcr, Verl, Julius Springer, Berlin 194-0 KONJETZWY, G,F, Special conseruences of rubber tubes remaining in pleura empyema residual cavities. Chir, 13,1-6,194-1 To the prognosis of shot wounds of the lungs, Mitteil-v, d. Grenzg, Med, u,G hir, 33, 1918 41 KRAMPF Surgical treatment of the empyema residual cavity Zbl, Chir,1935,1211-1215 KRAUSS, H, Late conseouences after shots through the lungs, Ther.d, Gegenw,1944,H,3/4 LANDOIS, F* Ins The surgery of EIP-aGHNeR and NORDMANN. 2,Aufl,5.Bd. LAVR00N Postoperative pneumonia in case of unilateral plastic of the thoracic wa11, Ref.Z,Ora. 107, 261,1942 L0UBAT and MAGENDIE The retarding effect of tannin on the new formation of bones in case of a plastic of the thoracic wall, 47,Kongr,Franz,Chir* 821-828 (1939) MAURER, 6, A combination of a lung collapse method for treat- ment of cavities, Benno Schwabe, Basel 1942 MEADE, Richard H, Recurrent purulent inflam- mation of the pleura. Am. Surg,101,559-567, 1935 MEISS, W,C, Experimental contribution to the simplification of thoracoplasty in several tempi, Zbl,Chir.1930,349-54 NEVILLE, I.V.H, The treatment of the chronic suppuration of the pleura with continuing high negative pressure, iurg, 69,240-24-6, 1939 NICHOLSON Intra pl~ural treatment with sulfonamides of the streptococcic ompycma, Brit,med,Journ,1933,115-17 OEHLECKER Lateral pseudo hernia after costal shot fracture with in- jury of the intercostal nerves . Partical paralysis of the abdominal wall in its relation to the surgery of the thorax, Dtsch.Z .Chir. 157,93-140,1920 42 SALZER, Georg Prophylaxis , and treat- ment of the empyema r sidual cavity, Mittl.Grenzgeb, Med,u,Chir,46,122-38, 1942 SARAF0F Arch.klin.Chir. 194,558,1939 SAUERBRUCH The treatment of the suppu - ration of the pleura. Arch,klin.Chir,157,235-80 1929 SCHLEGELj M, Treatment of empyema by blood transfusion. Eschr, K i nd c r he i Ik, 64,3 2 9 -3 6,193 6 SCHNEIDER Fff/ct of toxin of foul pus :n case of pleura empyema. Dt sch,Z sc hr,0hir,244,521-30 1935 VALENTIN, Karolino Treatment of ploural empyema in juveniles. Arch. inderh, 126, 190-193 1942 VOSSCHULTE, K, Disturbances and diffi- culties in the treatment of suppurations of the pleura, Mucnc h.raed,Wsc hr.1943, 50/51 WACHSMUTH The cachexia of wounds caused in the war, A symp- tom complex caused by in- fections and loss of protein, V er o e f f o nt 1. C hir S o n, La z , O.K.H. 194.2/4.3 490-495 WANGENSTEEN Plastic of pedunculated muscle flap for closing of existing bronchial fistulae of the pleura. Description of preservation and use of the intercostal muscle-bund- le by forming lie a ents (on account o f avo:■ d:■ ng a phrenicotomy)for closing large chronic thoracic cavities. J,Tborac,Turg, 5,27-53 and 76-82 (1935) WESTHUFS The obliteration of large empyema residual cavities with bronchial fistulae, Zbl.Chir. 1942,1572-78 43 ZSCHAU About the applicability of pedunculated muscle flaps in operations of residual empyema*and indirect bron- chial fistulae, Zbl.Chir.1939,2529-2534