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Monophasic action potential recording provides valuable insights into the electrophysiological mechanisms of myocardial ischemia, atrial fibrillation, and drug-induced long QT syndrome in animal models.
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This review highlights the utility of monophasic action potential recordings in understanding the electrophysiological mechanisms of arrhythmias under various pathological and pharmacological conditions in vivo.
単相性活動電位(monophasic action potential:MAP)は微小電極により記録した心筋活動電位波形に類似する電位として示すことが実験的に報告され,吸引電極法,押し付け電極法の開発によって,ヒトでのMAP記録も可能となっている.本総説では,MAP記録の歴史的背景,原理,記録法について概説するとともに,著者らがMAP記録下に行った基礎研究について以下の項目について述べ,考察する.①Regional hypoxia, hyperkalemia, イソプロテレノール負荷条件下における心筋MAP持続時間の変化,②急性心筋虚血時における心内膜側および心外膜側活動電位の経時的変化 -ATP感受性K+チャネルの関与について-,③心房細動が心房MAPに及ぼす影響,④薬剤誘発性QT延長症候群における右室MAPの特徴とATP感受性K+チャネル開口薬の作用.(心電図,2018;38:176~186)
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Ichiro Watanabe (2018) conducted a review in Electrophysiology / Arrhythmias. Monophasic action potential (MAP) recording was evaluated. Monophasic action potential recording provides valuable insights into the electrophysiological mechanisms of myocardial ischemia, atrial fibrillation, and drug-induced long QT syndrome in animal models.
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