bethanidine ( 8 mg/kg i.v . every 8 h , n = 4 ; 16 mg/kg i.v . every 8 h , n = 5 ) failed to prevent the development of premature ventricular beats , ventricular tachycardia , and ventricular fibrillation which developed in response to a transient ischemic episode superimposed on the heart that had a previous acute myocardial infarction .
C0018787
heart
C0155626
acute myocardial infarction