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INTRODUCTION : It took just hundred years for cardiac surgery to advance to what it is today. Before 1896, surgeons considered heart to be "inviolable" and it was stated that operating directly on the pulsating heart can be done but the patient will not survive, In 1896, Ludwig Rehn, a German Surgeon, sutured a wound in the heart caused by stab injury. Discovery of X-ray in 1895 and electrocardiographic recording in 1924, paved the way for the better understanding of diseases of the heart. In 1929, Warner Frossman from Germany did the first right heart catheterization on himself.
Rehn and Sauerbrock from Germany did the first partial pericardiectomy for constrictive pericarditis (1913). Mitral stenosis was one of the earliest intra cardiac lesions to be treated surgically. Cutler and Levine (1923) using a special knife attached to the finger and Souttar is using digital dilatation were the earliest surgeons to treat mitral stenosis. However, effective closed mitral valvotomy procedures were established by Harken and Bailey in the US and Brock in UK.
Processing of roughage Roughages constitute the bulk of the ration of farm animals and these include green fodder (leguminous and non-leguminous), grasses, and various crop re
Respiration - Metabolism of Pollen Tubes In the unpollinated pistils of Hippeastrum hybridum very high O 2 , tension exists from stigma down through most of the style. During
How different are fecundation in osteichthyes and in chondrichthyes? In chondrichthyes fecundation is internal by means of copulation. In osteichthyes fecundation generally is
REASON S FOR GROWTH OF POPULATION - The human population explosion is mainly a result of reduced death rate. Main reasons for it are - 1 . Protection from natura
Q. Explain about Podophyllum? These species were long used by indigenous people in Americea and Asia, including for the treatment of skin cancers and warts. The combination of
composition,sources,importance,types,requirements for each food substances
Q. What does this fungus looks like? Ans. The important characteristic features of aflatoxicosis are jaundice, cirrhosis. Long term exposure to aflatoxins could lead to
The greatest buffering capacity of weak acids is when- Select one: a. They are almost completely dissociated b. They are almost completely undissociated c. They are nea
Complications of Phototherapy i) Insensible water loss: There is increased insensible water loss in infants undergoing phototherapy. ii) Gastrointestinal effects: Photot
1. Awareness - First people become aware of a problem. 2. Acquire Knowledge and skills - Next, they gather knowledge and learn new skills. 3. Motivation - At the next stag
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