Liu Tu-Ying, Tai Ching-Tai, Chen Shih-Ann
Department of Medicine, National Yang-Ming University, School of Medicine. and Taipei Veterans General Hospital, Taiwan.
J Cardiovasc Electrophysiol. 2002 Oct;13(10):1044-6. doi: 10.1046/j.1540-8167.2002.01044.x.
A 74-year-old man with atrial fibrillation (AF) underwent electrophysiologic study and catheter ablation with a noncontact mapping system. AF was induced by coronary sinus pacing, and noncontact mapping showed ever-changing movement of multiple wavefronts with one dominant reentrant circuit around the tricuspid annulus, splitting wavefront conduction through the gaps in the crista terminalis, and then fusion and stasis of wavefronts. After creation of bidirectional conduction block over crista terminalis gaps and the cavotricuspid isthmus, AF or atrial flutter was noninducible. No further AF recurrence was noted during 6-month follow-up.
一名74岁的心房颤动（AF）男性患者接受了电生理研究及使用非接触式标测系统的导管消融术。通过冠状窦起搏诱发房颤，非接触式标测显示多个波前不断变化的运动，其中一个主要折返环围绕三尖瓣环，波前传导通过终末嵴的间隙分裂，然后波前融合和停滞。在终末嵴间隙和腔静脉-三尖瓣峡部建立双向传导阻滞之后，房颤或心房扑动无法诱发。在6个月的随访期间未发现房颤复发。
