Ejection Fraction

Also written as: EF, LVEF

Simple Meaning

The percentage of blood your heart pumps out with each beat — the key strength score on an echo.

Where it appears in reports

On echocardiogram reports, written as EF or LVEF with a percentage.

Why it matters

EF around 55–70% is normal. Lower values suggest the pump is weaker — a finding with effective treatments, especially when caught early. EF is tracked over time in heart conditions.

High vs low

When high

Values up to ~70% are normal; unusually high readings are uncommon and assessed in context.

When low

Below ~50% suggests reduced pumping strength; below 40% usually leads to specific heart-failure treatment.

Doctor advice needed

Report words describe findings — they are not diagnoses. What "Ejection Fraction" means for you depends on your symptoms, history, and other results. Always review your report with your doctor.

Frequently Asked Questions

The percentage of blood your heart pumps out with each beat — the key strength score on an echo. If you are unsure what it means for you, ask your doctor.

EF around 55–70% is normal. Lower values suggest the pump is weaker — a finding with effective treatments, especially when caught early. EF is tracked over time in heart conditions. On its own it is not a diagnosis — it needs clinical correlation with your symptoms and other results. Consult your doctor for guidance.

Appears In

Heart Imaging & Radiology

Related Terms

Mild Moderate Severe

Related Tests

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Echocardiogram

An ultrasound movie of your heart's chambers, valves, and pumping.

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Disclaimer: This information is for patient education only and does not replace medical advice, diagnosis, or treatment. Always consult a qualified doctor.