Glossary/Heart Failure

Ejection Fraction.

A measurement of how much blood the left ventricle pumps out with each contraction, expressed as a percentage. A normal ejection fraction is 55-70%. Below 40% is considered reduced and indicates weakened heart muscle function.

Definition

What is ejection fraction?

A measurement of how much blood the left ventricle pumps out with each contraction, expressed as a percentage. A normal ejection fraction is 55-70%. Below 40% is considered reduced and indicates weakened heart muscle function.

Related Terms

Related glossary terms.

Heart Failure
A chronic condition in which the heart cannot pump blood efficiently enough to meet the body's ne...
HFrEF
Heart Failure with Reduced Ejection Fraction (EF 40% or less). Previously called systolic heart f...
HFpEF
Heart Failure with Preserved Ejection Fraction (EF 50% or greater). Previously called diastolic h...
Echocardiogram
An ultrasound of the heart that uses sound waves to create real-time images of the heart's chambe...
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