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Normal ejection fraction of the heart is in the range of 60% to 80%. It can also be classified as normal, mildly reduced, moderately reduced and severely reduced without giving a percentage. The ejection fraction is used as a measure of the severity of heart failure and helps guide treatment. Please note: Symptoms do not always match the severity of the ejection fraction. Some very symptomatic patients can have normal ejection fractions and some patients with very low ejection fractions can have almost no symptoms of heart failure. Ejection fractions can also be measured by other heart tests besides the echocardiogram such as heart catheterizations and another test called a MUGA scan.
In the normal heart, the main pumping chamber (left ventricle) ejects at least 50 percent of the blood that comes into it with each heartbeat. This is called ejection fraction. It is a measure of the strength of the heartbeat. If the heart is diseased or weak, the ejection fraction decreases.
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