“关联”中的关联。
The link in Linking.
作者信息
Caldwell Jane C, Chiale Pablo A, Gonzalez Mario D, Baranchuk Adrian
机构信息
Heart Rhythm Service, Queen's University, Kingston, Ontario, Canada.
出版信息
Indian Pacing Electrophysiol J. 2013 Jun 25;13(3):118-21. doi: 10.1016/s0972-6292(16)30629-5. Print 2013 May.
We present 2 cases of the slow-fast form of AVNRT with initially narrow QRS complexes followed by sudden unexpected transition to persistently wide QRS complexes due to aberrant intraventricular conduction. Introduction of a properly timed extrastimulus in one case and critical oscillations in cycle length due to short-long coupling in the second case set the stage for the initial bundle branch block. However, persistence of the aberrancy pattern once the initial event abated was maintained by the "linking" phenomenon. Delayed, retrograde concealed activation from the contralateral bundle branch perpetuated the initial bundle branch block.
我们报告2例房室结折返性心动过速的慢快型病例，最初QRS波群狭窄，随后由于室内差异性传导突然意外转变为持续增宽的QRS波群。在1例中适时引入期外刺激，另1例中由于短-长联律导致心动周期长度出现临界振荡，为初始束支阻滞奠定了基础。然而，一旦初始事件消退，异常模式的持续存在是由“连接”现象维持的。对侧束支的延迟、逆行隐匿性激动使初始束支阻滞持续存在。
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