Chapter 8: Understanding Echocardiogram Results

An echocardiogram provides a wealth of information about the heart’s structure and function. However, the report often contains medical terms, measurements, and abbreviations that can be confusing to patients. Understanding the basics of these results can help patients have more informed discussions with their healthcare providers and better understand their heart health.

It is important to remember that an echocardiogram is only one part of a complete medical evaluation. Cardiologists interpret the findings alongside a patient’s symptoms, physical examination, electrocardiogram (ECG), blood tests, medical history, and other imaging studies before making a diagnosis.

This chapter explains the most common measurements and findings found in an echocardiogram report and what they may indicate.

How Echocardiogram Results Are Interpreted

After the examination, a cardiologist carefully reviews all of the recorded images and measurements.

The evaluation includes:

• Heart chamber size
• Heart muscle thickness
• Pumping function
• Valve movement
• Blood flow patterns
• Blood pressure estimates
• Presence of fluid around the heart
• Congenital abnormalities
• Blood clots or tumors

The cardiologist then prepares a detailed report summarizing the findings.

What Does a Normal Echocardiogram Mean?

A normal echocardiogram indicates that:

• The heart chambers are normal in size.
• The heart muscle contracts effectively.
• The heart valves open and close properly.
• Blood flows normally through the heart.
• No abnormal masses or blood clots are present.
• No significant fluid surrounds the heart.
• Major blood vessels appear normal.

A normal result provides reassurance that the heart’s structure and pumping function are healthy at the time of the examination.

Heart Chambers

The heart contains four chambers:

• Right atrium
• Right ventricle
• Left atrium
• Left ventricle

The echocardiogram evaluates whether these chambers are:

• Normal in size
• Enlarged
• Thickened
• Weak
• Dilated

Enlarged Chambers

Enlargement may occur because of:

• High blood pressure
• Heart valve disease
• Cardiomyopathy
• Long-standing heart failure
• Congenital heart disease

The specific chamber involved often provides clues to the underlying condition.

Left Ventricular Function

The left ventricle is the heart’s main pumping chamber.

One of the most important measurements is how effectively it pumps blood to the body.

Ejection Fraction (EF)

The ejection fraction (EF) represents the percentage of blood pumped out of the left ventricle with each heartbeat.

Typical values include:

• 55–70%: Normal pumping function
• 50–54%: Slightly below normal
• 41–49%: Mildly reduced function
• 30–40%: Moderately reduced function
• Below 30%: Severely reduced function

A reduced ejection fraction may indicate:

• Previous heart attack
• Heart failure
• Cardiomyopathy
• Long-standing hypertension
• Severe valve disease

It is important to note that some people with heart failure may still have a normal ejection fraction, a condition known as heart failure with preserved ejection fraction (HFpEF).

Wall Motion

The cardiologist evaluates how each section of the heart muscle contracts.

Normal wall motion indicates healthy blood supply.

Abnormal wall motion may suggest:

• Previous heart attack
• Reduced blood supply
• Coronary artery disease
• Scar tissue
• Cardiomyopathy

Different wall motion abnormalities help identify which coronary artery may be affected.

Heart Muscle Thickness

The echocardiogram measures the thickness of the heart muscle.

Increased thickness may occur because of:

• High blood pressure
• Hypertrophic cardiomyopathy
• Athletic heart adaptation
• Certain genetic disorders

Excessively thick heart muscle may reduce the heart’s ability to relax properly.

Heart Valves

The heart contains four valves:

• Mitral valve
• Aortic valve
• Tricuspid valve
• Pulmonary valve

Each valve is examined for:

• Proper opening
• Proper closing
• Calcification
• Infection
• Leakage
• Narrowing

Valve Stenosis

Stenosis means narrowing of a valve.

Common examples include:

• Aortic stenosis
• Mitral stenosis

Valve stenosis forces the heart to work harder to pump blood.

Severity is usually classified as:

• Mild
• Moderate
• Severe

Treatment depends on symptoms and the degree of narrowing.

Valve Regurgitation

Regurgitation means leakage of a valve.

Instead of moving forward, some blood flows backward.

Common types include:

• Mitral regurgitation
• Aortic regurgitation
• Tricuspid regurgitation
• Pulmonary regurgitation

Small amounts of leakage are common and often harmless.

More severe leakage may require medication or surgery.

Doppler Findings

Doppler ultrasound measures blood flow.

The report may include:

• Blood flow velocity
• Pressure gradients
• Valve pressure differences
• Pulmonary artery pressure

These measurements help determine the severity of valve disease and pulmonary hypertension.

Diastolic Function

The heart must both contract and relax properly.

Diastolic function refers to how well the heart relaxes between beats.

Abnormal relaxation may result from:

• Aging
• High blood pressure
• Diabetes
• Heart muscle disease

Diastolic dysfunction is often an early sign of heart failure.

Right Heart Function

The right ventricle pumps blood to the lungs.

The echocardiogram evaluates:

• Right ventricular size
• Pumping strength
• Pulmonary artery pressure

Abnormal findings may suggest:

• Pulmonary hypertension
• Lung disease
• Pulmonary embolism
• Congenital heart disease

Pulmonary Artery Pressure

The echocardiogram can estimate pressure within the pulmonary arteries.

Elevated pulmonary artery pressure may indicate:

• Pulmonary hypertension
• Chronic lung disease
• Heart valve disease
• Left-sided heart failure

Further testing may sometimes be required to confirm these findings.

Pericardium

The heart is surrounded by a protective sac called the pericardium.

The echocardiogram evaluates whether:

• Fluid is present.
• The sac is thickened.
• Inflammation exists.

Large collections of fluid may compress the heart and require urgent treatment.

Blood Clots

An echocardiogram may detect blood clots inside the heart chambers.

Clots are more likely in patients with:

• Atrial fibrillation
• Previous heart attack
• Weak heart muscle
• Artificial heart valves

Early detection helps prevent stroke and other complications.

Congenital Heart Defects

Some people are born with abnormalities in heart structure.

An echocardiogram can diagnose:

• Atrial septal defect
• Ventricular septal defect
• Patent ductus arteriosus
• Tetralogy of Fallot
• Abnormal valve development

Many congenital defects can now be treated successfully.

Heart Tumors

Although uncommon, echocardiography can identify masses within the heart.

These may include:

• Benign tumors
• Cancerous tumors
• Blood clots
• Infectious growths

Further imaging is usually needed to determine the exact nature of the mass.

Aorta Assessment

The echocardiogram examines the beginning portion of the aorta.

Abnormal findings may include:

• Enlargement
• Aneurysm
• Dissection (in selected cases)
• Congenital abnormalities

Additional imaging with CT or MRI may be recommended if needed.

Artificial Heart Valves

Patients with prosthetic valves require periodic echocardiograms.

The examination assesses:

• Valve opening
• Valve closing
• Blood flow
• Pressure gradients
• Evidence of clot formation
• Signs of infection

Regular monitoring helps ensure proper valve function.

Comparing Current and Previous Results

Cardiologists often compare the latest echocardiogram with earlier studies.

This allows assessment of:

• Improvement
• Stability
• Disease progression
• Response to treatment

Serial echocardiograms are particularly useful in patients with chronic heart disease.

Common Terms in an Echocardiogram Report

Patients may encounter medical terms such as:

• Normal systolic function: Heart pumps normally.
• Reduced systolic function: Pumping ability is decreased.
• Mild regurgitation: Small valve leak.
• Moderate stenosis: Moderate valve narrowing.
• Dilated ventricle: Enlarged pumping chamber.
• Hypertrophy: Thickened heart muscle.
• Hypokinesis: Reduced movement of part of the heart muscle.
• Akinesis: No movement in a section of the heart muscle.
• Pericardial effusion: Fluid around the heart.

Understanding these terms helps patients better interpret discussions with their healthcare providers.

Why Abnormal Results Do Not Always Mean Serious Disease

Many echocardiogram findings are mild and do not require treatment.

For example:

• Mild valve leakage is common with aging.
• Slight chamber enlargement may occur in athletes.
• Small variations in measurements are often normal.

The significance of any finding depends on the patient’s overall clinical picture rather than a single measurement.

Discussing Results with Your Healthcare Provider

After receiving your report, consider asking:

• Is my heart pumping normally?
• Are my valves healthy?
• Do I have any heart muscle damage?
• Do I need medication?
• Should I have another echocardiogram in the future?
• Do I need lifestyle changes?
• Are additional tests necessary?

Clear communication helps patients actively participate in their care.

Emotional Reactions to Results

Waiting for medical results can be stressful.

Remember that many heart conditions detected by echocardiography are treatable with:

• Lifestyle changes
• Medications
• Catheter-based procedures
• Surgery when necessary

Early diagnosis often leads to better outcomes.

Chapter Summary

An echocardiogram provides detailed information about the heart’s chambers, valves, pumping function, blood flow, and surrounding structures. Key measurements such as ejection fraction, chamber size, valve function, and Doppler blood flow help cardiologists diagnose conditions including heart failure, valve disease, cardiomyopathy, congenital heart defects, pulmonary hypertension, and complications following a heart attack. While many findings are completely normal or only mildly abnormal, others may require additional evaluation or treatment. Understanding the basic terminology and discussing the results with a healthcare provider enables patients to better understand their heart health and participate in decisions about their care.

In the next chapter, we will explore the many heart conditions that can be diagnosed or monitored with an echocardiogram, including heart failure, valve disorders, congenital heart disease, cardiomyopathy, infections, and diseases of the aorta.