间隔部旁道射频消融发生房室传导阻滞的临床分析

目的:探讨间隔部房室旁道射频消融术发生房室传导阻滞的原因。方法:回顾分析67例间隔部旁路参与的房室折返性心动过速患者射频消融的临床资料。结果:消融成功率为98.5%(66/67),3例发生Ⅱ度至Ⅲ度房室传导阻滞,发生率为4.55%(3/66)。结论:虽然房室旁路的消融手术成功率高、操作安全,但间隔部旁路消融仍具有挑战性。熟练的心电生理和解剖知识、精确标测、低功率放电、增加消融电极稳定性,有助于减少房室传导阻滞的发生。

Retrospective analysis of atrioventricular block triggered by radiofrequency ablation in the treatment of septal accessory pathway

Objective:To investigate the cause of atrioventricular block(AVB) triggered by radiofrequency ablation(RFCA) in the treatment of septal accessory pathway.Methods:We retrospectively analyzed the clinic features of patients who were cured by RFCA with septal accessory pathway.Results:The success rate for ablation of septal accessory pathway was 98.5%(66/67).AVB occurred in 3 of 66 patients(4.55%) of second-degree block to third-degree block.Conclusion:Although ablation of accessory bypass tracts is a successful and safe procedure,septal pathways bypass remains challenging.Accurate knowledge of cardiac electrophysiology and anatomy involved,precise mapping,lower ablation energy,enhanced catheter stability may reduce AVB.