Echocardiogram Report Explained: What Your Results Mean

Receiving an echocardiogram report filled with terms like "ejection fraction," "mild mitral regurgitation," and "diastolic dysfunction" can feel alarming — especially when your heart is involved. This guide translates the most common echocardiogram findings into plain language, so you can have a more informed conversation with your cardiologist.

Key Takeaways

• An echocardiogram (echo) is an ultrasound of the heart — it uses sound waves, not radiation, to create real-time images of your heart's structure and function.
• Ejection fraction (EF) is the single most important number in most echo reports. A normal EF is 55% or higher.
• Findings like "mild regurgitation" or "trace valvular abnormality" are extremely common and often require only routine monitoring — not immediate treatment.
• A cardiomegaly finding means your heart is enlarged, which can have many causes and always needs clinical follow-up.
• The Impression or Conclusion section at the end of your report is the radiologist's or cardiologist's bottom-line summary — start there if you feel overwhelmed.

What Is an Echocardiogram?

An echocardiogram is an ultrasound examination of the heart. A trained sonographer places a probe on your chest and uses high-frequency sound waves to produce moving images of your heart beating in real time. A standard transthoracic echocardiogram (TTE) — the most common type — takes approximately 30–60 minutes and requires no injections, no radiation, and no recovery time.

According to the American College of Cardiology (ACC), echocardiography is one of the most versatile cardiac imaging tools available, capable of assessing heart muscle function, valve health, chamber sizes, and blood flow patterns — all in a single exam.

Your echo report is typically interpreted by a cardiologist or echocardiographer. The report evaluates four main areas:

1. Left ventricular (LV) systolic function — how well your heart pumps blood out
2. Left ventricular diastolic function — how well your heart relaxes and fills with blood
3. Valve structure and function — the condition of your four heart valves
4. Heart structure — chamber sizes, wall thickness, and the pericardium (the sac around the heart)

Ejection Fraction: The Key Number

Ejection fraction (EF) measures the percentage of blood that leaves your left ventricle — your heart's main pumping chamber — with each heartbeat. It is the single most important functional measurement in most echo reports.

A normal EF of 55–70% means your heart is ejecting more than half of its blood with each beat, which is healthy. An EF below 50% may indicate that the heart muscle is not contracting as strongly as it should — a condition called systolic dysfunction or heart failure with reduced ejection fraction (HFrEF). However, EF should always be interpreted alongside your symptoms, medical history, and other echo findings.

Some patients have symptoms of heart failure but a normal EF. This is called heart failure with preserved ejection fraction (HFpEF), and it is diagnosed through a separate assessment of diastolic function.

Diastolic Function

Diastolic function refers to how well your heart relaxes between beats to fill with blood. Unlike EF, diastolic function cannot be captured in a single number — it is graded using multiple measurements from Doppler imaging.

Reports typically classify diastolic function as:

• Normal — the heart fills efficiently
• Grade I (Impaired relaxation) — the heart is stiff and fills slowly; often seen with age, high blood pressure, or diabetes
• Grade II (Pseudonormal) — filling pressures are mildly elevated; may cause exertional shortness of breath
• Grade III (Restrictive filling) — filling pressures are significantly elevated; often associated with advanced heart failure

Mild grade I diastolic dysfunction is very common in adults over 60 and may not cause any symptoms. More advanced grades are associated with reduced exercise tolerance and require active management.

Heart Valve Findings

Your heart has four valves — the aortic, mitral, tricuspid, and pulmonary valves — and the echo evaluates each one for two main problems:

• Regurgitation (insufficiency) — the valve does not close completely, allowing blood to leak backward
• Stenosis — the valve opening is narrowed, making it harder for blood to flow through

Both conditions are graded from trace or mild to moderate or severe. Trace and mild findings are extremely common, often present for years without causing symptoms, and typically require only periodic monitoring with repeat echocardiograms. The American Heart Association (AHA) recommends echocardiographic surveillance every 3–5 years for mild valve disease, adjusting frequency based on the valve involved and any change in symptoms.

Common Valve Phrases

• "Trace mitral regurgitation" — a tiny amount of backward flow through the mitral valve; present in up to 70% of normal adults, generally not clinically significant.
• "Mild aortic regurgitation" — a small amount of backward flow through the aortic valve; typically monitored without intervention.
• "Mild aortic stenosis" — some narrowing of the aortic valve; usually followed with serial echos.
• "Moderate mitral regurgitation" — warrants closer monitoring and evaluation of symptoms; may need intervention if it progresses.
• "Severe aortic stenosis" — significant narrowing that restricts blood flow out of the heart; often requires valve replacement when symptomatic.

Heart Size and Structure

Cardiomegaly

Cardiomegaly means your heart is enlarged. On an echocardiogram, this is measured precisely — the report will note whether individual chambers (left ventricle, right ventricle, left atrium, right atrium) are enlarged and by how much (mild, moderate, or severe).

Cardiac enlargement can result from many conditions, including long-standing high blood pressure, heart valve disease, heart failure, or prior heart attack. The cause matters greatly, and your cardiologist will interpret chamber sizes in the context of your full clinical picture.

Wall Thickness and Motion

The report will assess the thickness of the left ventricular walls (normal: 6–11 mm in diastole) and describe how each wall segment moves during contraction. Terms you may see include:

• "Normal wall motion" — all segments contract evenly and robustly
• "Hypokinesis" — a wall segment contracts weakly; may indicate reduced blood supply or prior injury
• "Akinesis" — a wall segment is not moving; associated with scar tissue from a prior heart attack
• "Hypertrophy" — thickened walls, often from long-term high blood pressure or aortic stenosis

According to RadiologyInfo.org, regional wall motion abnormalities are one of the most important findings an echocardiogram can detect, as they often signal coronary artery disease.

Pericardial Effusion

A pericardial effusion is a buildup of fluid in the sac surrounding the heart. Small effusions (< 10 mm) are common and often benign — they can occur after viral infections, heart procedures, or with inflammatory conditions. Large effusions that compress the heart may require drainage.

Understanding the Impression Section

The Impression (or Conclusion) section is the cardiologist's summary. Common phrases you may see include:

• "Normal echocardiogram" — all measurements are within expected ranges. No significant structural or functional abnormality detected.
• "Normal left ventricular systolic function with EF of 60%" — the heart is pumping normally.
• "Mildly reduced EF of 48%" — the heart muscle is contracting slightly below normal; follow-up recommended.
• "Mild mitral regurgitation, trace aortic regurgitation — clinically stable" — common valve findings that do not require immediate intervention.
• "Left atrial enlargement" — the upper left chamber is larger than normal; often associated with atrial fibrillation or elevated filling pressures.
• "Diastolic dysfunction, grade I" — the heart is mildly stiff; common with age or high blood pressure.

If your report uses within normal limits to describe a specific measurement, it means that value falls within the expected range for your age and body size.

What Happens After an Abnormal Echo?

Depending on your results, your cardiologist may recommend:

1. Repeat echocardiogram — to monitor stable findings over time (commonly every 1–5 years for mild valve disease)
2. Cardiac MRI — for more detailed assessment of heart muscle, scarring, or complex structural issues
3. Stress echocardiogram — an echo performed during or immediately after exercise to assess how the heart functions under load
4. Cardiac catheterization — if coronary artery disease or severe valve disease is suspected
5. Medication adjustments — medications for blood pressure, fluid retention, or heart rate control are often initiated or adjusted based on echo findings
6. Referral to a heart failure specialist — for reduced EF or advanced diastolic dysfunction

If you are unsure about any finding in your report, the most important step is to contact your cardiologist and ask them to walk you through the results in the context of your symptoms and health history. If you want help understanding the terminology before that appointment, you can upload your imaging report on ReadingScan to get a plain-language explanation in minutes.

Frequently Asked Questions

What is a normal ejection fraction on an echocardiogram?

A normal ejection fraction is 55% or higher. An EF between 55–70% is considered healthy. Values below 50% suggest the heart muscle may not be pumping as efficiently as it should, and your cardiologist will evaluate whether treatment is needed based on your symptoms and other findings.

What does "mild mitral regurgitation" mean?

Mild mitral regurgitation means a small amount of blood flows backward through the mitral valve when the heart beats. It is one of the most common valve findings in adults and is present in roughly 10% of the general population. In most cases, mild regurgitation requires only periodic monitoring with repeat echocardiograms rather than treatment.

Is an echocardiogram the same as a cardiac ultrasound?

Yes. An echocardiogram is a type of ultrasound specifically focused on the heart. It uses the same sound-wave technology as an abdominal ultrasound, but with probes and settings optimized for imaging moving cardiac structures and blood flow patterns.

What does it mean if my echo shows left atrial enlargement?

Left atrial enlargement means the upper-left chamber of the heart is larger than normal. This finding is commonly associated with elevated pressures within the heart (from diastolic dysfunction or valve disease), or with atrial fibrillation, which is an irregular heart rhythm. Your cardiologist will evaluate this finding alongside your heart rhythm history and other echo measurements.

Can an echocardiogram detect blocked arteries?

A standard resting echocardiogram does not directly visualize the coronary arteries. However, it can detect regional wall motion abnormalities — areas of the heart muscle that move weakly — which may suggest reduced blood supply from a blocked artery. If coronary artery disease is suspected, your cardiologist may order a stress echocardiogram, a CT coronary angiogram, or a cardiac catheterization.

Related Articles

• How to Discuss Your Imaging Results With Your Doctor
• How to Read a Radiology Report: A Patient's Complete Guide
• Understanding Radiology Reports With AI

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Disclaimer: This article is for educational purposes only and does not constitute medical advice. Always consult with a qualified healthcare professional for diagnosis and treatment decisions.