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  1. www.heart.org › en › health-topicsEjection Fraction Heart Failure Measurement

    Jun 14, 2023 · Ejection fraction (EF) is a measurement, expressed as a percentage, of how much blood the left ventricle pumps out with each contraction. An ejection fraction of 60 percent means that 60 percent of the total amount of blood in the left ventricle is pushed out with each heartbeat.

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  3. my.clevelandclinic.org › health › articlesEjection Fraction: What It Is, Types and Normal Range

    Jul 7, 2022 · The ejection fraction (EF) formula equals the amount of blood pumped out of the ventricle with each contraction (stroke volume or SV) divided by the end-diastolic volume (EDV), the total amount of blood in the ventricle. To express as a percentage, you would multiply by 100. So, EF = (SV/EDV) x 100.

  4. www.healthline.com › health › ejection-fractionEjection Fraction: Normal Range, Low Range, and Treatment

    Jun 25, 2023 · Everything You Need to Know About Ejection Fraction. Measurement. Ejection fraction results. Heart failure. Low EF causes. High EF causes. Treatment. Summary. Ejection fraction is a measurement...

  5. www.myheartdiseaseteam.com › resources › ejectionEjection Fraction and Heart Failure: What Does It Mean?

    Sep 8, 2022 · An EF below 40 percent is considered low. This may show that a person has heart failure with reduced ejection fraction (HFrEF) or cardiomyopathy — an enlarged, thick, or stiff heart muscle. A lower EF means that the heart’s pumping action is weaker.

  6. ecgwaves.com › topic › ejection-fraction-efEjection fraction (EF): Physiology, Measurement & Clinical ...

    EF = ejection fraction. Since stroke volume (SV) is the difference between end-diastolic volume (EDV) and end-systolic volume (ESV), EF can also be calculated as: EF (%) = [ (EDV-ESV)/EDV]·100.

  7. www.heart.org › en › health-topicsTypes of Heart Failure - American Heart Association

    Mar 23, 2023 · EF heart failure with mid-range ejection fraction (HFmrEF) is a newer concept. In this type of heart failure, the left ventricle pumps between 41% and 49% EF. This places people with HFmrEF between the HFrEF and HFpEF groups. Right-sided heart failure.

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  9. www.pennmedicine.org › updates › blogsEjection Fraction: What Do the Numbers Mean? | Penn Medicine

    Apr 13, 2022 · In most cases, ejection fraction refers to the percentage of blood that's pumped out of the left ventricle with each heartbeat. For example, an ejection fraction of 50% means that 50% of the blood from the left ventricle is being pumped out during each beat.