顽固性频发性室性早搏的射频消融治疗

Treatment of Refractory Frequent Ventricular Premature Beat by Radiofrequency Catheter Ablation

目的 :了解射频消融治疗顽固性频发室性早搏的效果。方法 :采用心室激动顺序与起搏标测法进行室性早搏标测定位 ,标测到室性早搏最早激动点较体表心电图QRS波提前 30ms以上或消融电极起搏心电图QRS波图形与室早图形完全一致时放电消融。结果 :16例中 15例成功 ,成功率 93 3%。无并发症发生。结论

Objective: To study the curative effect on refractory frequent ventricular premature beat (VPB) by radiofrequency catheter ablation. Methods: The refractory frequent ventricular extrasystoles of 16 patients (male 9 female 7) were treated by radiofrequency catheter ablation. (RFCA). The way of ventricular excited sequence and pacemaker-mapping was used to map and locate the site of VBP origin. When the original site of eliciting premature beat, where the excitation point of VPB appeared 30 ms earlier than QRS waves of surface EKG or QRS waves of ablation electrode pacing electrogram were completely coincident with QRS waves of VPB, was localized, the frequency current should be delivered in situ. Results: The VBP successfully ablated in 15 of 16 patients, the success rate was 93.3%. without intraoperative or postoperative complications. Conclusion: RFCA is an effective and safe surgical approach for frequent monomorphic ventricular ectopic beats.