propranolol and other beta-adrenergic blocking agents are now generally acknowledged to be helpful in the management of hypertension , certain cardiac arrhythmias , migraine , essential tremor , angina pectoris , and most recently , immediately after myocardial infarction ( frishman , 1981 ; norwegian multicenter study group , 1982 ) .
C0033497
propranolol
C0027051
myocardial infarction