肺静脉内两种水平的阻滞
Two levels of block within a pulmonary vein作者机构：Cardiovascular Division Department of Medicine Beth Israel Deaconess Med. Ctr. H. Boston M A United StatesDr.
出 版 物：《世界核心医学期刊文摘（心脏病学分册）》 (Digest of the World Core Medical Journals(Cardiology))
年 卷 期：2005年第1卷第1期
页 面：14-15页
学科分类：1002[医学-临床医学] 100201[医学-内科学(含：心血管病、血液病、呼吸系病、消化系病、内分泌与代谢病、肾病、风湿病、传染病)] 10[医学]
主 题：正常窦性心律 房性心动过速 传出阻滞 电生理特性 持续性房颤 体表心电图 传导阻滞 右上肺静脉 左心房 周期长度
摘 要：We present a 37-year-old woman with drug refractory atrial fibrillati on refe rred for a pulmonary vein (PV) isolation procedure who manifested a tachycardia with 2:1 intra-PV block within a dissociated *** ablation in the right su perior PV, the surface rhythm became normal sinus, with persistent atrial fibril lation within the PV. Shortly thereafter, an atrial tachycardia with a cycle len gth of 190 ms and 2:1 distal to proximal exit block was observed within the isol ated PV. Conduction block within a PV electrically isolated from the left atrium is a newly observed phenomenon that may have imp lications to the electrophysiologic properties of the PV muscular sleeves.
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