281. The surgical instrument used here for a cataract operation ... is known as a cryoprobe Subject(s): OphthalmologySurgical InstrumentsCataract ExtractionWorld Health Organization
282. ... the injection of a contrast medium (usually iodine compound) via a flexible tube Subject(s): Cardiovascular DiseasesWorld Health Organization
283. [Miniature transmitter used to monitor heartbeats] Subject(s): Cardiovascular DiseasesEquipment and SuppliesWorld Health Organization
284. The sound of the dog's heartbeats is picked up by a microphone stuck to his fur Subject(s): Cardiovascular DiseasesEquipment and SuppliesWorld Health Organization
285. The passage of the dye through the blood vessels is recorded by two small photo-electric cells Subject(s): Cardiovascular DiseasesEquipment and SuppliesWorld Health Organization
286. Congenital malformations of the heart originate in the embryo Subject(s): Cardiovascular DiseasesWorld Health Organization
287. Dr. [Zdenek] Rychter produces his own tools for his very delicate operations Subject(s): Cardiovascular DiseasesEquipment and SuppliesWorld Health Organization
288. ... micro x-ray photographs of a chick embryo heart from 3rd to 11th day Subject(s): World Health Organization
289. ... studying blood circulation in the new-born Subject(s): Cardiovascular DiseasesWorld Health Organization
290. Stockholm's Karolinska hospital - this boy works a stationary bicycle while his heart is being tested for abnormalities Subject(s): Cardiovascular DiseasesNursesChildSwedenWorld Health Organization