右侧旁路致室上性心动过速的射频消融治疗

Radiofrequency ablation for supraventricular tachycardia due to right lateral accessory atrioventricular pathway

目的 :观察右心房室旁路 (RAP)致室上性心动过速 (SVT)射频消融 (RFA)治疗的安全性和有效性。方法 :18例RAP合并SVT患者 ,其中显性旁路 10例 ,隐匿性旁路 8例 ,经股静脉途径消融。结果 :在射频能量 2 0～ 5 0W、持续 90～ 12 0s消融下 ,首次消融成功 77.8% ,二次消融成功率 88.9% ,均无手术相关并发症。术后随访 10～ 30个月 ,复发 1例 ,其余消融成功患者未服抗心律失常药物 ,无SVT发作。结论 :RFA治疗RAP参与的SVT安全、有效 ,但成功率较低 。

Objective:To study the effect of radiofrequency catheter ablation in treatment of patients with supraventricular tachycardia(SVT) due to right lateral accessory atrioventricular pathway(RAP).Methods:Eighteen patients with SVT combined by RAP were performed ablation by femoral venous approach,among whom 10 were of manifest type and 8 concealed type.Results:First ablation of RAP was successful in 14 patients( 77.8 %),with radiofrequency energy of 20 to 50 W and ablation time 90 to 120 seconds.The second ablation of RAP was performed successfully in 16 patients(88.9%).In 10 to 30 months follow up SVT reoccurred in 1 patient.Conclusions:Radiofrequency ablation of SVT due to RAP is efficient and safe,but ablation methods and equipment should be improved in order to increase ablation successe rate.