Ejection fraction is the percentage of blood pumped out of the heart’s main pumping chamber with each beat. You may see it shortened to EF on an echocardiogram report.
The number describes one part of how your heart works. It is not the percentage of your heart that is alive or working.
Your heart must fill with blood and then push blood forward. Measuring how much leaves the main chamber helps your doctor assess pumping function. But filling matters too. A person can have heart failure even when ejection fraction is described as preserved. Source: American Heart Association
Your doctor interprets the result alongside symptoms, medical history, and other findings. Two people with a similar EF can have different care needs.
Ask your clinician to show you where the number appears on your report. Then ask: “What does this tell us, and what does it leave out?”
You can also ask whether the result has changed and whether a change affects your care plan. Avoid comparing your number with someone else’s without that context.
Write down the answer in a way that makes sense to you. For example: “My doctor is looking at both my pumping result and my breathing symptoms.”
You do not need to interpret the report alone. The useful next step is understanding what it means for your own care.