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Expresses the stroke volume as a share of end-diastolic volume, the standard measure of left ventricular systolic function.
Ejection fraction
EF (%) = (EDV - ESV) / EDV x 100
Educational estimate only. Not a substitute for professional clinical judgement, and must not be used to make treatment or dosing decisions.
50% or above is generally considered normal, 41-49% mildly reduced and 40% or below reduced.
No. End-systolic volume is always smaller than end-diastolic volume, so EF stays below 100%.