异常束支：运动负荷试验期间出现交替心搏不同程度右束支传导阻滞1例
The mischievous bundle: a case of varying degrees of right bundle branch block on alternate beats during exercise stress testing.
作者信息
Singh Sukhvinder
机构信息
Department of Noninvasive Cardiology, Ganesh PET-CT and Imaging Centre, New Delhi, India.
出版信息
Ann Noninvasive Electrocardiol. 2013 May;18(3):299-303. doi: 10.1111/anec.12001. Epub 2012 Nov 22.
A 78-year-old male was referred for exercise stress testing. He developed incomplete right bundle branch block during first stage of exercise and later on developed incomplete and complete right bundle branch block on alternate beats (2:1). During first minute of recovery he developed complete right bundle branch block on all beats (1:1). At 3 minutes of recovery, baseline electrocardiographic pattern was resumed. Variable degree of right bundle branch block on alternate beats is a rare phenomenon. The plausible mechanisms responsible for this phenomenon are being discussed.
一名78岁男性被转诊进行运动负荷试验。他在运动第一阶段出现不完全性右束支传导阻滞，随后交替心搏出现不完全性和完全性右束支传导阻滞（2:1）。在恢复的第一分钟，所有心搏均出现完全性右束支传导阻滞（1:1）。恢复3分钟时，心电图恢复至基线形态。交替心搏出现不同程度的右束支传导阻滞是一种罕见现象。本文对导致该现象的可能机制进行了讨论。
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