although both nifedipine ( 0.04-0.2 mg/kg i.v . ) and propranolol ( 1-2 mg/kg i.v . ) produced a slight but significant ( p less than 0.05 ) dose-dependent decrease in the incidence of vf during the occlusion period only , this protection was accompanied by a significant increase in ectopic activity .
C0033497
propranolol
C0042510
vf