Ejection
fraction (EF) indicates to the percentage of blood that is pumped (or ejected)
out of the ventricles with each heartbeat. One of the most important
determinants of the severity of systolic heart failure is the ejection fraction
(EF). EF acts as a common measure of a person's cardiac function, and it is
generally measured by echocadiogram.
 |
Dobutamine Stress Echocardiography |
EF is always low in patients with systolic
congestive heart failure. A low EF is always associated with some cardiac
diseases. Generally, healthy individuals have EF between 50% and 65%. In
practice, normal values depend on the mathematical model (for example
EF(%)=100SV/EDV, SV=stroke volume=end-diastolic volume (EDV) -end-systolic
volume (ESV)) being used to compute the EF, and it may depend on the person's
physical, biochemical, lifestyle, working nature, dietary parameters, etc. Read More>>>>
