射频消融治疗682例房室结折返性心动过速的临床分析

Treatment of atrioventricular nodal reentrant tachycardia with radiofrequency ablation in 682 patients

目的回顾性分析射频消融术治疗682例慢-快型房室结折返性心动过速的疗效及安全性。方法所有病例均先行心内电生理检查,明确诊断后,以中、下位法行射频消融,统计消融成功率、复发率、并发症发生率、死亡率等指标。结果射频消融成功率99.6%,复发率1.0%,并发症发生率1.3%,无死亡病例。结论射频消融治疗房室结折返性心动过速成功率高,并发症少,复发率低。以中位法消融、延长单次有效放电时间、消融后房室结不应期延长且达到慢径消失可有效提高房室结折返性心动过速的消融成功率且明显降低术后复发率。

Objective To analyze retrospectively the curative effect and safety of radiofrequency ablation in 682 patients with slow-fast form of atrioventricular nodal reentrant tachyeardia （AVNRT）. Methods All cases were given intracardiac electrophysiological examination at first, and then treated with median and hypogyny radiofrequency ablation after definitive diagnosis. The indexes, such as success rate, recurrence rate, incidence rate of complication and mortality, were calculated. Results The success rate of radiofrequeney ablation was 99.6%, recurrence rate was 1.0%, incidence rate of complication was 1.3% and there was no dead ease. Conclusion Radiofrequency ablation for treating AVNRT has a higher success rate, less implications and lower recurrence rate. The median ablation, prolonged single effectual discharge time, prolonged atrioventricular nodal refractory period after ablation and disappeared slow pathway can significantly increase the success rate and decrease the recurrence rate after radiofrequency ablation in the treatment of AVNRT.