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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 End-diastolic volume ： ウィキペディア英語版 End-diastolic volume In cardiovascular physiology, end-diastolic volume (EDV) is the volume of blood in the right and/or left ventricle at end load or filling in (diastole) or the amount of blood in the ventricles just before systole. Because greater EDVs cause greater distention of the ventricle, 'EDV'' is often used synonymously with ''preload'', which refers to the length of the sarcomeres in cardiac muscle prior to contraction (systole). An increase in EDV increases the preload on the heart and, through the Frank-Starling mechanism of the heart, increases the amount of blood ejected from the ventricle during systole (stroke volume). ==Parameters affecting EDV== Because nearly two-thirds of the blood in the systemic circulation is stored in the venous system, end-diastolic volume is closely related to venous compliance. * Increasing venous compliance elevates the capacitance of the veins, reducing venous return and therefore end-diastolic volume. * Decreasing venous compliance has the opposite effect. For example, activation of the baroreceptor reflex (occurring, for instance, in acute hemorrhage) causes vasoconstriction, which decreases venous compliance, improves venous return, and therefore increases end-diastolic volume. 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「End-diastolic volume」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.