between mid-1981 and jan 1 , 1985 , 16 027 patients entering 245 coronary care units at a mean of 5.0 h after the onset of suspected acute myocardial infarction were randomised either to a control group or to a group receiving atenolol ( 5-10 mg iv immediately , followed by 100 mg/day orally for 7 days ) .
C0027051
myocardial
C0004147
atenolol