Heart disease: The ef is the ejection fraction or the percent of the volume of blood in the heart that is pumped with each beat. It is a measure of the ability of the heart to contract. It is normally 55 to 65 per cent.
Answered 5/3/2013
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A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
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