Healthy Circulatory System

What is the ejection fraction?

A Answers (5)

  • A Cardiology (Cardiovascular Disease), answered on behalf of
    What is the ejection fraction?
    Ejection fraction (EF) is the amount of blood that enters the heart and is pumped out, says Robert Fishel, MD, director of cardiac electrophysiology at JFK Medical Center. In this video, he explains what EF tells doctors about the heart.
  • A Cardiology (Cardiovascular Disease), answered on behalf of

    The amount of blood that is pumped out by the heart in one beat is called the ejection fraction.
    An ejection fraction reflects the strength of the heart muscle. The normal ejection fraction for the left ventricle is 50% to 60%. The heart muscle may be weakened from a heart attack, heart failure, or an infection. Any weakening of the heart muscle may lower the ejection fraction.


  • The ejection fraction is a measure of how well the heart is pumping blood. The measurement describes the percent of blood inside the ventricle chamber that is pumped into the body with each heartbeat. A healthy ejection fraction is 55 to 60 percent of the blood inside the ventricle. This measurement is often taken during an echocardiogram, a test that uses sound waves to make an image of the heart.

  • A Cardiology (Cardiovascular Disease), answered on behalf of
    Ejection fraction is the amount of blood released during each contraction of the lower ventricle of the heart. It is usually expressed as a percentage: an ejection fraction of 60% means that 60% of the total amount of blood in the left ventricle is expelled with each heartbeat.
  • A answered
    A cardiac ejection fraction (EF) refers to the percentage of blood pumped from the heart’s main chamber during each heartbeat. It is measured by an echocardiogram or ultrasound of the heart muscle.
This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.
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