Selvaraj Raja, Ananthakrishnapillai Ajith, Sadasivam Ravishankar, Balachander Jayaraman
Jawaharlal Institute of Postgraduate Medical Education and Research, Puducherry, India.
Pacing Clin Electrophysiol. 2013 Jan;36(1):e4-6. doi: 10.1111/j.1540-8159.2011.03210.x. Epub 2011 Sep 2.
A 52-year-old woman presented with left ventricular (LV) dysfunction and incessant narrow complex tachycardia. Electrocardiogram and clinical picture were suggestive of a permanent form of junctional reciprocating tachycardia, but electrophysiology study showed the tachycardia to be a fast-slow form of atrioventricular nodal reentrant tachycardia (AVNRT). Slow pathway ablation terminated the tachycardia and the LV dysfunction resolved completely at follow-up. Fast-slow AVNRT has not been reported to present in incessant form, and the mechanism in this patient was absent retrograde fast pathway conduction resulting in easy initiation and maintenance of tachycardia.
一名52岁女性因左心室（LV）功能障碍和持续性窄QRS波心动过速就诊。心电图和临床表现提示为永久性交界性折返性心动过速，但电生理检查显示该心动过速为房室结折返性心动过速（AVNRT）的快慢型。慢径消融终止了心动过速，随访时左心室功能障碍完全消失。快慢型AVNRT未见有持续性发作的报道，该患者的机制是逆向快径传导缺失，导致心动过速易于发作和维持。
