经主动脉无冠状窦内射频消融治疗房性心动过速

Radiofrequency catheter ablation of atrial tachycardia from aortic non-coronary sinus

摘要: 目的:报告经主动脉无冠状窦内射频消融6例局灶性房性心动过速(房速)的消融结果。方法:6例患者中男女各3例。阵发性房速病史(6±3)年。常规心电图、心内电生理,术中心房和心室刺激诱发房速,分别在右心房、左心房和主动脉无冠状窦内标测最早心房激动,并进行射频消融。结果:心房刺激能反复诱发和终止6例患者的房速。心房内的前间隔部位标测相对提前的心房激动,但多次消融未成功。经主动脉无冠状窦内消融成功。平均随访3~17个月,无1例房速复发。结论:经主动脉无冠状窦消融前间隔房速是安全,有效的。

Abstract: AIM:To report successful catheter ablation of anteroseptal focal atrial tachycardia(AT) from the aortic non-coronary sinus cusp.METHODS:Six patients three males and three females with paroxysmal AT for(6±3) years were mapped and ablated in both atria and aortic non-coronary sinus cusp.RESULTS:ATs were easily reproducibly induced and terminated by atrial pacing in the six patients.Multiple radiofrequency ablation at the anteroseptal region of the atria failed.However,mapping in the aortic non-coronary sinus was successful.All six patients were free of AT during the following 3 to 17 months.CONCLUSION:Mapping and ablation from the aortic non-coronary sinus cusp is a safe and effective approach,especially when ablation of AT fails at the bundle region.