Objective To investigate the mechanism of the myocardial protection of Verapamil on myocardial ischemia reperfusion injuiy in rabbits by oberserving plasma edothelin. Methods The model of myocardial ischemia reperfusion in rabbits were established ,30 rabbits were divided into groups according to the different time of reperfusion and whether Verapamil (0.2mg/kg ,i.v) were used or not ,and plamas edothelin(ET) were measured by radioimmunosasay method. Results Compared with the NS groups,Verapamil can signifi...