by contrast , beta-sympathicolytics , class iii antiarrhythmic agents ( d-sotalol type ) and calcium antagonists ( verapamil type ) ( the latter only at high doses ) cause a decrease in ischemia-induced prolongation of conduction and in dispersion of conduction times thereby reducing the incidence of early ventricular fibrillation .
C0037707
sotalol
C0042510
ventricular fibrillation