1980

Dewood et al. publish results of 1971-1978 study conclusively establishing the predominant role of coronary thrombosis in myocardial infarction. In patients studied within four hours of onset, 85% showed occluding coronary artery thrombus on angiography; among those studied 12-24 hours after onset of symptoms, frequency of thrombi declined to 65%, evidence that soon after formation coronary thrombi begin to undergo lysis (Weisse, 76-77).