Ejection fraction

In cardiovascular physiology, ejection fraction (Ef) is the fraction of blood pumped out of a ventricle with each heart beat. The term ejection fraction applies to both the right and left ventricles; one can speak equally of the left ventricular ejection fraction (LVEF) and the right ventricular ejection fraction (RVEF). Without a qualifier, the term ejection fraction refers specifically to that of the left ventricle.
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Ejection fraction n. The blood present in the ventricle at the end of diastole and expelled during the contraction of the heart. [more]Ejection fraction - Community and Resources