Effects of high altitude (HA) have been encountered in aviation and mountaineering, but here the aviator or mountaineer goes fully prepared for a short stay. With introduction of pressurized planes many of the high altitude problems in commercial aviation have been solved. But in case of men who have to go to the mountains at short notice and stay there [...]
Heart Disease Mitral valve disease is the commonest form of chronic rheumatic valve disease, the valve being affected m about 85 per cent of cases. The affected valve may be either stenosed offering obstruction to the flow of blood from the left atrium to the left ventricle or the valve may be incompetent resulting in regurgitation of blood from the [...]
Angina pectoris is a clinical manifestation of inadequate coronary blood supply which in the past was given many names, e.g. angina of effort, decubitus angina, nocturnal angina, intractable angina, Prinzmetal angina etc. but it is now proposed that if the angina is due to coronary vasospasm it should be called primary but if it is due to an established lesion [...]