pretreatment ( i.p . ) with quinidine ( 40 mg/kg ) , procainamide ( 40 mg/kg ) , phenytoin ( 40 mg/kg ) , clofilium ( 5 mg/kg ) , verapamil ( 10 mg/kg ) , or propranolol ( 10 mg/kg ) reduced the incidence of isoproterenol-induced ventricular fibrillation and death ;
C0022245
isoproterenol
C0042510
ventricular fibrillation