Heart Health
Understanding ejection fraction
Ask the doctor
Q.My doctor wants to measure my ejection fraction. What does that mean, and what should I expect?Contrary to what many people believe, a normal ejection fraction is not 100%. Even a healthy heart pumps out only about half to two-thirds of the volume of blood in the left ventricle in one heartbeat. Therefore, a normal ejection fraction lies somewhere in the range of 55% to 65%. Values lower than 50% are considered reduced.
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