in non-ischemic and chronically infarcted canine hearts , clofilium ( 0.5-2 mg/kg ) produced a dose-dependent increase in electrical ventricular fibrillation threshold ( vft ) , but prolonged the effective refractory period ( erp ) of normal myocardium in only the non-ischemic heart .
C0027061
myocardium
C0018787
heart