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目的研究以阵发性发作为特征的房室慢旁路参与的房室折返性心动过速。方法21例病例资料来自1999年7月至2005年1月间在北京大学人民医院接受射频消融治疗的患者,均符合房室慢旁路的诊断标准,根据其心动过速发作的频繁程度分为阵发组和持续组两组,对比分析其电生理资料。结果与持续组相比,阵发组房室慢旁路逆传不应期较长[(359±46)ms对(318±31)ms,P<0.01]、文氏点较低[(133±18)/min对(165±22)/min,P<0.05],这种差别与慢旁路所在部位无关。结论房室慢旁路逆传不应期延长、文氏点降低是其参与的房室折返性心动过速呈阵发性发作的原因。
Aim To study atrioventricular reentrant tachycardia with paroxysmal atrioventricular paroxysmal bypass. Methods Twenty-one cases of patients from July 1999 to January 2005 at Peking University People’s Hospital underwent radiofrequency ablation were in line with the diagnostic criteria of atrioventricular bypass, according to the frequency of tachycardia episodes were divided into Paroxysmal group and continuous group two groups, comparative analysis of electrophysiological data. Results Compared with the continuous group, the retrograde involuntary slow pathway of AV atrial fibrillation in the burst group was longer than that in the continuous group [(359 ± 46) ms vs (318 ± 31) ms, P <0.01] ± 18) / min vs (165 ± 22) / min, P <0.05]. This difference was not related to the site of the slow bypass. Conclusions Atrioventricular slow-pathway reverse should not be prolonged. Wen-point reduction is the reason for its paroxysmal atrioventricular reentrant tachycardia.