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房室结折返性心动过速(AVNRT)与房室折返性心动过速(AVRT)的鉴别有时较困难,尤其是不典型AVNRT与间隔旁道参与的AVRT鉴别,不典型AVNRT在心动过速发生时最早心房激动位于后间隔区域,与后间隔旁道引起的AVRT相似。通常检测房室结双径路的电生理方法仅能鉴别63%的不典型AVNRT。该文介绍了两者的主要电生理鉴别方法,包括希氏束旁起搏、在希氏束不应期给予心室期前程序刺激、心室或希氏束旁起搏后间期与心动过速周长之差(PPI-TCL)和刺激信号至心房波减去室房(SA-VA)间期的区别、校正的心室PPI-TCL和VA间期、心动过速时VA分离现象及TCL行心室起搏时的VA间期与心动过速时的VA间期之差等9种方法。
Atrioventricular nodal reentrant tachycardia (AVNRT) and atrioventricular reentrant tachycardia (AVRT) differential identification is sometimes more difficult, especially atypical AVNRT and interval accessory pathway involved AVRT identification, atypical AVNRT in tachycardia occurred The first atrial excitations were located in the posterior septal region, similar to the posterior septal AVRT. Electrophysiological methods that usually detect atrioventricular nodal dual pathways can only identify 63% of atypical AVNRT. This article describes the main electrophysiological methods of both, including His bundle pacing, His ventricular pre-ventricular stimulation during His bundle stress, post-pacing ventricular or His bundle pacing and tachycardia Differences in Peripheral Length (PPI-TCL) and Stimulation Signals to Atrial Attenuated Room (SA-VA) Interval, Corrected Ventricular PPI-TCL and VA Interval, VA Separation during Tachycardia, Stroke duration of VA interval and tachycardia when the difference between the VA interval nine methods.