射频消融后旁路传导复发的相关因素

射频消融房室旁路患者114例，成功地消融了125条旁路，经随访12个月，旁路复发10例（8％）。旁路复发11％～29％分布在前间隔、后间隔和右侧游离壁，左侧游离壁复发仅占4％。消融时未记录到旁路电位是很强的预示旁路复发的因素。25例未记录到旁路电位的有16％复发，而记录到旁路电位的89例仅6％复发（P＜0．01）。结论：旁路复发与消融时未记录到旁路电位以及旁路的部位有关。右侧游离壁、间隔以及隐匿性旁路复发相对较高，与旁路不能精确定位有关。

Factors associated with recurrence of accessory pathway conduction after radiofrequency catheter ablation

Catheter ablation of 125 accessory pathways (APs) using radiofrequency current was attempted in 114 consecutive patients. After a follow up period of 12 months. AP conduction had returned in 10 patients (8 % ). AP conduction recured in 11% ~ 29 % of anteroseptal, posteroseptal,and right freewall APs, but only 4 % of left free wall APs. Failure to record AP potentials from the ablation electrode was a strong predictor for recurrence of AP conduction. AP conduction returned in 16% of 25 APs when AP potentials were not recorded,compared to 6% of 89 APs when AP potentials were recorded from the ablation electrode (P< 0. 01 ). In conclusion, recurrence of AP conduction are relate to failure to record AP potentials from the ablation electrode and APs localization,it is higher for right free wall and septal APs,and probably relates to poor AP localization.