不同标测方法的右室流出道室性早搏射频消融治疗

Radiofrequency catheter ablation of ventricular ectopic beats originating in the right outflow tract with different mapping procedure

目的比较不同标测方法的射频消融治疗右室流出道室性早搏的疗效和安全性。方法66例右室流出道室性早搏随机分组(起搏标测组和起搏+最早激动点联合标测组)进行射频消融治疗。结果起搏标测组和联合标测组各33例,两组分别成功消融32例,总成功率为96.8%,无严重并发症出现。但起搏标测组和联合标测组的手术及X线曝光时间不一致,分别为(72.87±23.34)vs.(58.56±20.56)min(P<0.05)和(7.59±2.67)vs.(6.13±1.71)min(P<0.05)。结论射频消融治疗右室流出道室性早搏疗效确切,安全性良好,起搏和最早激动点联合标测可缩短手术及X线曝光时间。

Objective To study the efficacy and safety of radiofrequency catheter ablation of ventricular ectopic beats originating in the right outflow tract with different mapping procedure. Methods Sixty-six patients with ventricular ectopic beats originating in the right outflow tract were enrolled. The patients were randomly assigned to two groups： pace mapping group（A） and pace mapping plus the earliest endocardial activation time mapping group（B）. Ablation was performed in all patients. Results Ablation was performed successfully in 64 of 66（96.8%） cases. The success rate of ablation was similar in the two groups. But the time of operation and X-ray exposure time in group A were （72.87±28.84）and （7.59±2.67） min respectively,which were significantly longer than those in group B （58.56±20. 56 min and 6. 13±1.71 min, respectively） （P〈0. 05）. Conclusion Radiofrequency catheter ablation for ventricular ectopic beats originating in the right outflow tract is effective and safe. Pace mapping plus the earliest endocardial activation time mapping for the ablation may save the time for the operation and X-ray exposure.