between september 1 , 1986 , and december 31 , 1987 , sixty-four consecutive patients younger than 70 years , with early ( less than 4 hours ) symptoms and signs of myocardial infarction , were treated with 1.5 million units streptokinase intravenously in the emergency room ( er group ) before admission to the coronary care unit .
C0027051
myocardial infarction
C0038418
streptokinase