室上性心动过速200例食管心房调搏资料分析

A data analysis of 200 patients with supraventricular tachycardia by esophageal atrial pacing

为探讨心电图无预激表现的室上性心动过速 (SVT)的电生理机制 ,对我院经食管心房调搏诱发出P-位于QRS后SVT2 0 0例临床电生理资料进行分析。结果表明 (1)隐匿性房室旁路 (CAP)参与的房室折返性心动过速 (AVRT)占上述SVT的 5 4 5 % (10 9/ 2 0 0 ) ,房室结折返性心动过速 (AVNRT)占 45 5 % (91/2 0 0 ) ,(2 )隐匿性房室旁路参与的AVRT中 2 3 9% (2 6 / 10 9)同时并有房室结双径路 (AVNDP) ,但均只能诱发出AVRT。

To study the electrophysiologic mechanisms of supraventricular tachycadia (SVT)without manifesting preexcitation waves in ECG,the clinical electrophysiologic data of 200 SVT with P-wave behind QRS wave by esophageal atrial pacing were analyzed.The results showed as follows:(1)109(54 5%)cases of atrial-ventricular reentrant tachycardia (AVRT)with joined by concealed accessory pathway(CAP),and the other 91(45 5%)were atrial-ventricular nodal reentrant tachycardia (AVNRT).(2)26(23 9%)cases of AVRT with CAP accompanied by atrioventricular node double pathway (AVNDP),but it only can be induced AVRT,the electrophysiologic characteristics of CAP accompanying with DAVNP were analyzed and discussed.