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Cardiology

Ejection fraction (EF)

The percentage of blood pumped out of the heart's left ventricle with each beat.

Normal EF is 55-70%. Reduced EF (under 40%) defines systolic heart failure. EF is measured on echocardiogram.

What this means for you: EF is one of the most important numbers in cardiac risk stratification. Bring your most recent EF measurement to any cardiac consultation.

General information, not medical advice

What a term means for you depends on your own reports. Ask your treating doctor, or send your reports for a free review.

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