no differences occurred in the 2 groups with regard to sex , previous angina pectoris or clinical acute myocardial infarction , healed myocardial infarction at necropsy , mean heart weight , number of major coronary arteries narrowed 76 to 100 % in xsa by atherosclerotic plaque , or the mean percent of 5-mm segments of the 4 major epicardial coronary arteries narrowed 76 to 100 % in xsa by atherosclerotic plaque .
C0155626
acute myocardial infarction
C0018787
heart