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ejection fraction
- the fraction of the blood contained in the ventricle at the end of diastole that is expelled during its contraction, i.e., the stroke volume divided by end-diastolic volume, normally 0.55 (by electrocardiogram) or greater; with the onset of congestive heart failure, the ejection fraction decreases, sometimes to 0.10 or even less in severe cases.
WebMD Medical Reference from "Stedman's Medical Dictionary"
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Stedman’s Medical Dictionary 28th Edition, Copyright© 2006_Lippincott Williams & Wilkins. All rights reserved.
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