What is a normal ejection fraction on an echocardiogram?

A normal left ventricular ejection fraction (EF) is 55–70%. An EF of 41–54% is considered mildly reduced. An EF of 40% or below is classified as heart failure with reduced ejection fraction (HFrEF), which requires active treatment and monitoring.

What does an echocardiogram show?

An echocardiogram shows the size and function of the heart's chambers, the thickness of the heart walls, the function of all four heart valves (mitral, aortic, tricuspid, pulmonary), blood flow patterns, and any fluid around the heart (pericardial effusion).

What does diastolic dysfunction mean on an echo report?

Diastolic dysfunction means the heart muscle is stiff and does not relax properly between beats, even if the pumping function (ejection fraction) is normal. It is commonly caused by long-standing high blood pressure and can lead to heart failure with preserved ejection fraction (HFpEF).

Do I need to prepare anything before an echocardiogram?

A standard transthoracic echocardiogram (TTE) requires no special preparation — you can eat and take your medications as normal. A transoesophageal echocardiogram (TOE), which involves a probe passed down the throat, requires fasting for several hours beforehand.

How often should I repeat an echocardiogram?

The frequency depends on your diagnosis. Mild valve disease or mildly reduced ejection fraction is typically monitored with a repeat echo every one to two years. More significant abnormalities may require six-monthly monitoring. Your cardiologist will specify the appropriate interval based on your individual results.

Understanding Your Echocardiogram Results

By DoctorVisitPrep Team / May 29, 2026

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