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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Sinoventricular conduction ： ウィキペディア英語版 Sinoventricular conduction Sinoventricular conduction is a rare form of cardiac conduction in which the sinoatrial node generates an impulse that is conducted to the atrioventricular node (AV node) in the absence of atrial contraction. This is the physiological proof for the presence of the internodal tracts, which have not been clearly demonstrated histologically. On electrocardiogram (ECG), there will be no P wave due to the inactivation of the atrial muscles. Hyperkalemia can lead to sinoventricular conduction, as evidenced on ECG by the P waves becoming flatter and flatter and eventually disappearing. The impulse from the sinus node is still conducted via the internodal tracts to the AV node, and thus normal ventricular activation occurs. Sinoventricular conduction has also been demonstrated during acute myocardial ischemia. This has been further elucidated by the absence of P waves in any surface leads despite effective high right atrial pacing. == References == 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Sinoventricular conduction」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.