房室同时激动的房性心动过速的电生理特征  

The electrophysiological characteristics of atrial tachycardia with atrio-ventricular synchronous exciting

作　　者：楚英杰[1] 郭继鸿[1] 许原[1] 李学斌[1] 刘肆仁[1] 

机构地区：[1]北京大学人民医院心内科

出　　处：《临床心血管病杂志》2008年第6期427-429,共3页Journal of Clinical Cardiology

摘　　要：目的:探讨在腔内心电图上表现为房室同时激动的房性心动过速(AT)的电生理特征。方法:对4例房室同时激动的AT患者的电生理资料进行分析。结果:AT并发房室结缓慢前传时,A波可与滞后的V波融合,使腔内心电图表现为房室同时激动,易误诊为典型房室结折返性心动过速。结论:AT时房室也可同时激动,规范、细致的电生理检查是避免误诊的关键所在。Objective：The aim of this study was to investigate the electrophysiological characteristics of atrial tachycardia（AT）, which shows simultaneous atrioventricular stimuli on endocaridal electrogram. Method： The electrophysiological data of 4 cases of atrial tachycardia with simultaneous atrioventricular stimuli were analyzed. Result：When atrial tachycardia was accompanied with slow orthodromic atrioventrieular node conduction, A waves could fused with hysteretic V waves. Then simultaneous atrioventricular stimuli were taken on endocaridal electrogram. So this atrial tachycardia tended to be misdiagnosed as atrioventricular node reentrant tachycardia（AVNRT）. Conclusion：Atria can be simultaneously excited with ventricle in atrial tachycardia. Canonical and meticulous electrophysiological study is the main point to avoid misdiagnosis.

关 键 词：房性心动过速 腔内心电图 电生理学 

分 类 号：R542.1[医药卫生—心血管疾病]