[Acute myocardial infarct: the importance of the coronary circulation type in the atherosclerotic lesion of the coronary arteries, the development of thromboses, the localization of the acute infarcts and their evolution].

Analysis was made to 270 deceased with acute myocardial infarction. The signs discussed were: type of coronary circulation, sex and age, nosological belonging, atherosclerosis affection and allocation of thrombosis in coronary arteries. The acute infarction lesions were characterized according to site, layers involved, left ventricular mass engaged mural thrombosis and acute aneurysms ruptures. Consideration was given to myocardiosclerosis, postinfarction cicatrices and chronic aneurysms, hypertrophic rate, duration of recent infarction, thromboembolic complications and death causes. Essential discrepancies were found for the separate coronary types as regards stenosis distribution, predominating affection of separate coronary vessels, site of coronary thrombosis, infarction, resp., infarction extent (layer and mass), rupture incidence, acute aneurysms and postinfarction cicatrices. The study revealed that left coronary type was the most unfavourable terrain for acute myocardial infarction.