Yamada Takumi, Huizar Jose F, Mcelderry Hugh T, Kay G Neal
Division of Cardiovascular Diseases, University of Alabama at Birmingham, Birmingham, Alabama 35294-0019, USA.
Pacing Clin Electrophysiol. 2008 Jan;31(1):135-7. doi: 10.1111/j.1540-8159.2007.00940.x.
A 70-year-old man with atrial fibrillation underwent pulmonary vein (PV) isolation (PVI). Bigeminal concealed PV depolarizations persisted within the right superior PV throughout the PVI. Though the PV depolarizations was suppressed after successful PVI, PV depolarization, following a slow intrinsic PV automatic rhythm, was observed. The coupling interval of the PV depolarizations during the PV automaticity was identical to that of the PV depolarizations during sinus rhythm before the PVI. This case demonstrated that PV depolarization does not always depend on an intact left atrial input, but may depend on some types of triggering electrical activity.
一名70岁的心房颤动男性接受了肺静脉（PV）隔离（PVI）治疗。在整个PVI过程中，右肺上静脉内持续存在二联律隐匿性PV去极化。尽管成功的PVI后PV去极化受到抑制，但仍观察到PV在缓慢的固有PV自律性之后出现去极化。PV自动节律期间PV去极化的耦合间期与PVI前窦性心律期间PV去极化的耦合间期相同。该病例表明，PV去极化并不总是依赖于完整的左心房输入，而是可能依赖于某些类型的触发电活动。
