心室程序刺激常可诱发多形性室速,但是许多患者预后良好。另据报道,Ⅰ_A类抗心律失常药物用后,有些患者不再能诱发多形性室速,而诱发单形性室速。本研究的目的旨在系统评价普鲁卡因胺对程序刺激诱发的多形性室速的作用。研究对象79例,78%为男性。其中22例有晕厥史,36例有心脏骤停史,6例无症状的非持续性室速,11例持续性单形性室速, Ventricular program stimuli often induce pleomorphic VT, but many patients have a good prognosis. It was also reported, Ⅰ_A class anti-arrhythmic drugs used, some patients can no longer induce pleomorphic VT but induced monomorphic VT. The purpose of this study was to systematically evaluate the effect of procainamide on pleiotropic ventricular tachycardia induced by programmed stimulation. The study object 79 cases, 78% of men. Among them, 22 had history of syncope, 36 had history of cardiac arrest, 6 asymptomatic non-sustained ventricular tachycardia, 11 continuous monomorphic VT,