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.
Ejection Fraction - Explanation of Normal and Abnormal Range. Ejection Fraction (EF) is one of the measurements used by physicians to assess how well a patient's heart is functioning. Ejection refers to the amount of blood that is pumped out of the heart's main pumping chamber during each heartbeat.