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ejection fraction

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Medical Dictionary

Main Entry: ejection fraction
Function: noun
: the ratio of the volume of blood the heart empties during systole to the volume of blood in the heart at the end ofdiastole expressed as a percentage usually between 50 and 80 percent
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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Medical Dictionary

ejection fraction n.
The blood present in the ventricle at the end of diastole and expelled during the contraction of the heart.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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