Objective To investigate the feasibility of treating annulus endogenous premature ventricular contractions by radiofrequency catheter ablation. Methods 39 annulus endogenous premature ventricular contractions patients were treated by radiofrequency catheter ablation, in which excited mapping and pace mapping were combined. The parameters were 25-40 W of energy, 10 seconds of pre-discharge, 60-90 seconds of discharge enhancement, 1-2 times of discharge consolidation. Immediate success standard:annulus endogenous premature ventricular contractions disappeared or happened at rate less than 1 time each minute. Long-term success standard:annulus endogenous premature ventricular contractions decreased more than 75%at 14 day review. Results Rate of immediate success was 84.6%and rate of total success was 95.8%in these 39 patients. 37 patients were cured and 2 patients were not responsive .Conclusion Radiofrequency catheter ablation is feasible for treating annulus endogenous premature ventricular contractions.% 目的探讨瓣环源性室性期前收缩导管法射频消融的可行性。方法对39例瓣环源性室性期前收缩患者进行导管法射频消融治疗,采用激动标测和起搏标测相结合的方法。能量25～40 W,试放电时间10 s,有效加强放电60～90 s，巩固放电1～2次。成功标准：（1）即刻成功标准：放电后室性期前收缩消失或偶发室性期前收缩≤1次/min；观察30 min,窦性心律稳定,PVC总数≤10次。（2）远期成功标准：术后14 d复查，Holter室性期前收缩次数较术前减少达75%。结果39例患者即刻成功率84.6%,总成功率94.8%。随访12个月，37例患者症状消失，2例无效。结论导管法消融治疗瓣环源性室性期前收缩具有可行性。
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