Ventricular vulnerable period (VVP) and veniricular fibrillation thre-sheld (VFT) and other electrophysiological items were measured simultaneously with S_1-S_2programmed electrical stimulation.

• 本文采用S_1-S_2程控电刺激方法同时测定心室易损期和室颠阈,并结合其它有关电生理指标,评价了急性心肌梗塞早期心室易损性。