三维电解剖标测指导射频导管消融治疗起源于主动脉无冠窦房性心动过速

Catheter ablation of atrial tachycardia from the noncoronary cusp of the aortic valve guided by Carto mapping

目的探讨起源于主动脉无冠窦房性心动过速（房速）的电生理特征及三维激动标测指导射频导管消融治疗无冠窦房速的安全性和有效性。方法43例局灶性房速经普通电生理检查及三维电解剖激动标测明确起源于无冠窦者7例。结果7例患者均于心动过速发作时消融10s内心动过速终止。所有患者于消融即刻心动过速终止或出现心动过速加速。在（20±6）个月的随访中心动过速未复发。结论三维激动标测指导射频导管消融治疗起源于主动脉无冠窦房速是安全有效的。

Objective In this study,we examined the characteristics of anteroseptal atrial tachycardia （AT） originating from the noncoronary cusp （NCC）of the aortic valve, and evaluated the long-term efficacy and safety of targeting the arrhythmias by Carto mapping to guide ablation. Methods AT from NCC region was evaluated and conformed by electrophysiological study in 7 patients in a cohort of 43 patients with symptomatic AT. Results The arrhythmia was terminated within〈 10 s of radiofrequency delivery and was successfully eliminated in all 7 patients. All patients have been arrhythmia free during （20±6）month follow-up. Conclusion Catheter ablation of AT from the NCC of the aortic valve guided by Carto mapping is safe and effective.