Ejection fraction: The portion of blood that is pumped out of a filled ventricle as a result of a heartbeat.
The heart does not eject all of the blood that is in the ventricle. Only about two-thirds of the blood is normally pumped out with each beat. That fraction is referred to the ejection fraction.
The ejection fraction is an indicator of the heart's health. If the heart is diseased from a heart attack or another cardiac condition, the ejection fraction may fall, for example, to a third. Only a third of the blood in the ventricle (half the normal two-thirds) is pumped out. The heart is essentially half-normal (in this respect).
The proportion of blood ejected out of the left ventricle during each heartbeat. It is equal to the stroke volume divided by the end diastolic volume . The ejection ...
Ejection fraction is a measurement of how well your heart is pumping.
Ejection Fraction- Cleveland Clinic Heart & Vascular Institute, leader in heart failure care and heart disease treatment in the United States.
CHFpatients.com - Your heart's Ejection Fraction explained in plain English
Ejection fraction. By Richard N. Fogoros, M.D., About.com Guide. Updated December 03, 2003. About.com Health's Disease and Condition content is reviewed by our ...