经食管电生理检查对110例房室结双径路传导分析  

Studies of 110 patients with dual atrioventricular nodal pathways via transesophageal electrophysiological examination

作　　者：代自立 楚咏晗 张永庆 夏琰 熊志伟 

机构地区：[1]河南省信阳市中心医院心脑功能科,464000

出　　处：《中国医师进修杂志（内科版）》2007年第3期41-43,共3页Chinese Journal of Postgraduates of Medicine

摘　　要：目的了解房室结双径路前向传导及诱发慢-快型房室结折返心动过速（S—FAVNRT）的电生理特征。方法分析110例房室结双径路经食管心房起搏电生理检查中S1S2法及分级递增法前向传导特征及诱发S—FAVNRT组与无诱发S—FAVNRT组电生理特征比较。结果S1S2法与分级递增法可分别诊断房室结双径路，表现为S2R≥60ms及两种界限分明的S1R间期和呈跳跃延长传导的文氏现象；诱发S—FAVNRT组显示慢径不应期短于无诱发S—FAVNRT组（P〈0．05）。结论经食管心房起搏电生理检查诊断房室结双径路简便易行，当房窒结双径路中慢径不应期短时易于诱发S—FAVNRT。Objective To investigate the electrophysiulogical characteristics of dual atrioventricular nodal pathways forward conduction and inducible slow -fast form atrioventricular nodal reentrant tachycardia （S - FAVNRT）. Methods The forward conduction characteristics of S, S2 method and classify increase by degrees method were investigated, while electrophysiological characteristics of inducible S - FAVNRT and noninducible S - FAVNRT were compared when 110 patients were examined of dual atrioventricular nodal pathways conduction by transesophageal electrophysiological method. Results S,Sz method and classify increase by degrees method could be used to diagnose dual atrioventricular nodal pathways. Wenekebaeh phenomenon of SzR ≥60 ms, S, R interphase and jumping- extended conduction were detected. The unreactive phase of slow - pathway were shorter in inducible S - FAVNRT group compared to noninducible S- FAVNRT group（P 〈 0.05）. Conclusions Dual atrioventricular nodal pathways could be easily diagnosed by transesophageal electrophysiological examination. Shorter unreactive phase of slow - pathway is tending to induce S - FAVNRT.

关 键 词：房室结双径路 食管心房起搏 电生理 

分 类 号：R540.41[医药卫生—心血管疾病]