射频能量时间递增法治疗房室结折返性心动过速

目的：评估射频能量时间递增法治疗４０ 例房室结内折返性心动过速的疗效及安全性。　方法：标测到理想的慢径路靶点后，从小功率（１０～１５ Ｗ）、短时间（５～１０ ｓ）放电开始，如出现交界区早搏或交界区心律，逐渐增加放电功率（２０～２５ Ｗ）和持续时间（３０～６０ ｓ），并密切观察房室传导阻滞的迹象和先兆。　结果：临床治愈率９７．５％ ，无一例产生严重并发症。　结论：射频能量时间递增法是一种安全、高效的治疗方法。

Radiofrequency energy incremental ablation in patients with atrioventricular nodal reentrant tachycardia

Objectives:To evaluate the efficacy and safety of radiofrequency energy incremental ablation in 40 patients with atrioventricular nodal reentrant tachycardia(AVNRT) . Methods: After localizing the ideal slow pathway site, the radiofrequency energy was delivered beginning with small energy(10~15W) for 5~10 s.If junctional premature beat or junctional rhythm appeared,energy output was increased to 20~25 W for 30~ 60 s while signs of atrioventricular block were closely monitored. Results: Thirty nine patients with AVNRT were cured.The success rate was 97. 5%, no severe complications occurred. Conclusions:Radiofrequency energy incremental ablation was a safe and effective method in the treatment of AVNRT.