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缺血性心律失常(IA)的非折返机制日益受到重视。本文通过分析度房室阻滞(AVB)模型犬缺血心肌单相动作电位(MAP)及对程序电刺激(PES)的反应特征,观察后除极与IA发生的关系,以探讨触发活动在IA发生机制中的地位。12只健康杂种犬静脉麻醉后气管插管,连接人工呼吸机。经股静脉将电
The non-reversion mechanism of ischemic arrhythmia (IA) is receiving more and more attention. The aim of this study was to investigate the relationship between post-depolarization and the occurrence of IA by analyzing the single-phase action potential (MAP) and the response to programmed electrical stimulation (PES) in canine atrioventricular block (AVB) IA mechanism of the place. Twelve healthy mongrel dogs were anesthetized by endotracheal intubation and connected to a respirator. The femoral vein will be electricity