Middle English (Scots) carne, from Scottish Gaelic carn; akin to Old Irish & Welsh carn cairn
Ejection fraction is commonly measured by an echocardiogram and serves as a general measure of a person's cardiac function. Ejection fraction is typically low in patients with the systolic form of congestive heart failure.
The Ejection Fraction (EF) is an objective measurement that has been used to assist health care providers in the treatment of heart failure; as it is an indicator of how well the heart is able to receive and then pump the blood throughout the body, as the needs of the body require it.