Yamada Takumi, Murakami Yoshimasa, Toyama Junji, Murohara Toyoaki
Division of Cardiovascular Diseases, University of Alabama at Birmingham, Alabama 35294-0019, USA.
Int Heart J. 2008 Jan;49(1):129-32. doi: 10.1536/ihj.49.129.
A 58-year-old man with atrial fibrillation underwent pulmonary vein (PV) isolation (PVI). Bigeminal atrial premature beats persisted from the beginning of the PVI. The cardiac recordings from a basket catheter (BC) revealed the PV ectopic origin in the distal right superior PV. Successful PVI with the guidance of BC was confirmed by the appearance of concealed ectopy. Surprisingly, the PV ectopy completely disappeared immediately after the successful PVI. The findings suggest that the generation of PV trigger is sometimes dependent on left atrial input and that the underlying mechanism of the PV trigger may have been triggered activity or reentry.
一名58岁的心房颤动男性接受了肺静脉（PV）隔离（PVI）治疗。自PVI开始后，成对房性早搏持续存在。篮状导管（BC）的心脏记录显示，异位起源于右肺上静脉远端。在BC引导下成功进行PVI，并通过隐匿性异位的出现得到证实。令人惊讶的是，成功的PVI后PV异位立即完全消失。这些发现表明，PV触发因素的产生有时依赖于左心房输入，且PV触发因素的潜在机制可能是触发活动或折返。
