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Ejection fraction (EF) is the fraction of outbound blood pumped from the heart with each heartbeat. It is commonly measured by echocardiogram and serves as a general measure of a person's cardiac function. Ejection fraction is typically low in patients with Systolic congestive heart failure. Ejection fraction is a similar but distinct mathematical model when compared to stroke volume, which (along with heart rate) determines cardiac output, which is the amount of blood the heart pumps per minute. Mathematical models of Volume vs. Time are well documented in the encyclopedia.
What is a normal ejection fraction in a 37 year old woman? Ejection fraction: In 37 yf the ejection fraction should be normal between 55-70%. Provided you do not have any heart problem. To be precise exact, doctor has to know wt , cardiac out put, heart rate, stroke volume& lvedv. Women have slightly high stroke volume. Not very much gender difference for ef%.