阵发性室上性心动过速(以下简称 PSVT)常见于无器质性心脏病的年青人及有严重冠状动脉、心肌或瓣膜病变的成年人。过去认为PSVT 的发病大都由异位灶激动引起,近十年来由于心腔心电图及心腔内电刺激法的技术改善,对 PSVT 的发病机制研究有了很大进展, Paroxysmal supraventricular tachycardia (hereinafter referred to as PSVT) is common in young people without organic heart disease and adults with severe coronary artery, myocardial or valvular disease. In the past that the incidence of PSVT are mostly caused by ectopic focus of excitement, the past 10 years as a result of cardiac electrocardiogram and intracardiac electrostimulation techniques to improve the research on the pathogenesis of PSVT has made great progress,