[Revascularization in the acute phase of myocardial infarction. Study of left ventricular function in the 3d week and 6th month].

27 patients with primary myocardial infarction are treated, in the first 6 hours, with intravenous thrombolysis with immediate coronary angiographic control showing a patent artery in 76 p. cent of the cases. The treatment is completed with intracoronary thrombolysis (5 times) and transluminal angioplasty (6 times), enabling to obtain a patency rate of 88 p. cent. The overall left ventricular function is evaluated at D21 and in the 6th month (M6). Among anterior infarctions, those treated during the first three hours have a better ejection fraction (EF) at D21 than those treated later (40.3 p. cent +/- 6 versus 33.2 p. cent +/- -NS); this functional benefit is confirmed at M6 (42.8 p. cent +/- 12 versus 30.6 p. cent +/- 8; p less than 0.06). On the contrary, among inferior infarctions, the EF is comparable at D21 and M6 regardless of the early nature of the treatment. One patient died prematurely from a cerebral vascular accident which occurred during the thrombolysis. These results are in favor of a significant myocardial salvation in anterior infarctions revascularised at an early stage and of an active approach in order to obtain the most complete possible revascularisation.