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.
Definitions for Ejection fraction. Ejection fraction. In cardiovascular physiology, ejection fraction represents the volumetric fraction of blood pumped out of the ventricle with each heart beat or cardiac cycle.