Definition: Normal postsystolic dilation of the heart cavities, during which they fill with blood; diastole of the atria precedes that of the ventricles; diastole of either chamber alternates rhythmically with systole or contraction of that chamber.
[G. diastole, dilation]
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© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review date: Sep 19, 2016.