Stark S I, Arthur A, Lesh M D
Department of Electrophysiology, Mercy General Hospital, Sacramento, California, USA.
J Cardiovasc Electrophysiol. 1996 Oct;7(10):967-71. doi: 10.1111/j.1540-8167.1996.tb00471.x.
Radiofrequency (RF) catheter ablation of ventricular tachycardia (VT) in patients with a right ventricular (RV) cardiomyopathy has only rarely been successful. This report demonstrates reentrant VT in the setting of RV cardiomyopathy in which the tricuspid valve annulus acted as one of the barriers of an isthmus of slow conduction, identified by the presence of entrainment with concealed fusion. The RF pulse was further targeted by analysis of the relationship between the postpacing interval with the tachycardia cycle length, and of the local activation time with the stimulation time. Long-term clinical follow-up has documented no recurrent VT.
对于患有右心室心肌病的患者，经射频（RF）导管消融治疗室性心动过速（VT）鲜有成功的报道。本报告展示了在右心室心肌病背景下的折返性室性心动过速，其中三尖瓣环作为缓慢传导峡部的屏障之一，通过隐匿性融合的拖带现象得以识别。通过分析起搏后间期与心动过速周期长度之间的关系，以及局部激动时间与刺激时间之间的关系，进一步确定了射频脉冲的靶点。长期临床随访证明室性心动过速未复发。
