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.
Because the left ventricle is the heartâs main pumping chamber, ejection fraction is usually measured only in the left ventricle (LV). A normal ejection fraction value for the left ventricle is 55 to 70 percent. Your ejection fraction value may decrease if your heart has been damaged by a heart attack or other problems with the heart valves or muscle.