What Does an Echocardiogram Show? Who Needs One and How to Prepare

Disclaimer: Content reviewed and maintained by the clinical team at Arrae Health. This content is provided for educational purposes only and is not a substitute for professional medical advice. Consult a qualified healthcare provider.

Quick Answer: An echocardiogram is an ultrasound picture of the heart. It uses sound waves rather than radiation to show the heart’s chambers, valves, muscle strength, and how well blood pumps, moving images that an EKG’s electrical tracing cannot produce on its own. Ask a physician whether symptoms justify the test.

What Is an Echocardiogram?

An echocardiogram is a painless heart imaging test that builds a moving picture of the heart from high-frequency sound waves. A trained technician holds a small device against the chest, and the returning sound waves render the heart’s chambers, valves, muscle walls, and the sac around the heart as they work.

Patients rarely see the word “echocardiogram” before the test is ordered, so the same exam travels under several names:

• Echocardiography
• Echo
• Heart echo, or heart echo test
• Heart ultrasound
• Heart sonogram

Because the images come from sound, the test involves no radiation at all, the detail families ask about most often. That matters because it lets the heart be pictured directly, rather than guessed at from an electrical tracing. The definition and scope of the test are set out by MedlinePlus, the US National Library of Medicine’s patient health service. Readers who want the step-by-step view of the test itself, including the positions used during the scan, can read how an echocardiogram is done on a woman.

What Does an Echocardiogram Show?

An echocardiogram shows how the heart is built and how well it is pumping. The findings a physician reads from the images include:

1. Chamber size and shape: whether the heart’s upper and lower chambers are enlarged or thickened.
2. How the heart moves: which walls squeeze normally and which move weakly.
3. Pumping strength: the percentage of blood pushed out with each beat.
4. Valve narrowing (stenosis): a valve that cannot open fully, forcing the heart to work harder.
5. Backward leaking (regurgitation): blood slipping back through a valve that does not close tightly.
6. Fluid or inflammation in the sac around the heart: a collection pressing on the heart muscle.
7. Clots inside the heart’s chambers: a possible source of a stroke.
8. The cause of an unexplained stroke or mini-stroke: including a hole between the upper chambers.

Those pictures help a physician evaluate heart failure, valve disease, heart muscle disease, heart problems present from birth, infection on a valve, and high pressure in the arteries of the lungs, a set of uses the American Heart Association and other national bodies group under the test’s core purposes. Some findings are minor and need no treatment, while others need a cardiologist’s input. That distinction is why results are interpreted by a physician who knows the patient’s symptoms, rather than by a single number on a report. Patients who want the full picture of cardiac testing, including stress testing and rhythm monitoring, can review cardiac evaluation with echo.

What Is the Difference Between an Echocardiogram and an EKG?

Test	What it records	How long it takes	Preparation	Radiation
EKG	Electrical activity and rhythm	About 10 minutes	None	None
Echocardiogram	Chamber structure, valves, pumping	30-60 minutes (surface)	Loose clothing, no creams on the chest	None
Stress echocardiogram	Heart structure and pumping during exertion	45-90 minutes	Hold certain medicines, skip caffeine	None

The National Heart, Lung, and Blood Institute describes five main types of echocardiogram, transthoracic, Doppler, stress, transesophageal, and three-dimensional, so the name on a referral slip may describe the same organ viewed a different way. When the question is circulation in the legs and arms rather than the heart itself, a separate study is used: peripheral vascular disease evaluation.

Who Needs an Echocardiogram, and Why Would a Provider Order One?

An echocardiogram is ordered for a reason, not as a routine yearly screen. The reasons a primary care provider orders it most often:

1. A heart murmur heard during a visit.
2. Breathlessness or fatigue with no clear explanation.
3. Swelling in the legs or ankles.
4. Chest pain being investigated.
5. A history of heart attack or heart failure.
6. Long-term management of high blood pressure care or diabetes evaluation and management.
7. A stroke or mini-stroke with no identified cause.
8. A family history of heart muscle disease.
9. Monitoring a known valve problem over time.

Heart failure itself is common after middle age: 6.7 million adults aged 20 and older in the United States live with it, according to the Centers for Disease Control and Prevention. For people managing the conditions that lead to it, including high blood pressure, whose early signs are covered in symptoms of high blood pressure, an echo answers a practical question: is heart muscle and valve function still normal?

The medical-necessity logic in plain words: the result has to change how the patient is managed. If nothing would change, the test is generally not appropriate, and Medicare does not cover an echo performed purely for screening, including testing done only because risk factors are present, as the Centers for Medicare & Medicaid Services coverage determination for transthoracic echocardiography states.

If You Are Reading This for a Parent: bring the full medication list, the insurance cards, and any prior heart test reports, and plan for someone else to drive if a sedated version of the test is scheduled.

How Do You Prepare for an Echocardiogram?

The standard surface test needs almost no preparation. Instructions differ sharply by test type, so the checklist below is split accordingly.

Transthoracic echocardiogram (TTE) checklist

• Eat and drink normally; no fasting is required for the standard test.
• Wear a loose two-piece outfit; clothing may be replaced with a gown from the waist up.
• Skip creams, lotions, and necklaces on the chest; the gel and transducer sit directly on the skin.
• Bring the medication list and the insurance card, and allow 30 to 60 minutes.

Transesophageal echocardiogram (TEE) checklist

• Nothing to eat or drink for about eight hours beforehand; remove dentures.
• Arrange a driver; a sedative is used, and driving is off the table for 24 hours.
• Expect the test to run longer than a surface echo and the throat to be sore for a day or two.

Stress echocardiogram checklist

• Follow the provider’s written instructions on which medicines to hold on the day.
• Avoid coffee, tea, and other caffeine sources on the day of the test.
• Wear comfortable clothes and supportive shoes for the walking or treadmill portion.

Patients are encouraged to raise symptoms at annual wellness visits, because the visit that documents a symptom is usually the visit that starts the testing process.

Not Sure Which Heart Test Your Symptoms Point To? A primary care visit at Arrae Health settles that question in one appointment: history, examination, and the right test ordered from there. book an appointment.

How Long Does an Echocardiogram Take, and Does It Hurt?

A standard surface echocardiogram usually takes 30 to 60 minutes, and a transesophageal study runs closer to 90 minutes, including preparation and recovery. Time is set aside for check-in, changing, and reviewing the images, so a patient should plan for the visit rather than the scan alone. These durations and the preparation steps by test type are summarised by MedlinePlus.

The surface test is painless and carries no known risks. The gel feels cool, and the probe pressure may be firm, but there is no needle and no radiation. When the lungs, ribs, or body tissue blur the picture, a contrast liquid may be given through an intravenous (IV) line, a routine part of the study, not a complication.

• Time: allow an hour for a surface echo, half a day for a sedated one.
• Pain: none for a surface echo; a temporary sore throat after a transesophageal echo.
• Driving: allowed after a surface echo; not allowed for 24 hours after a transesophageal echo.

Seniors scheduling the test alongside other preventive care can compare it with the visit types described in regular check-ups for seniors.

What Do the Results Mean, and What Is a Normal Ejection Fraction?

Ejection fraction is the share of blood the main pumping chamber pushes out with each beat. A normal left-ventricular ejection fraction falls within a healthy range, and a fall below 40% can indicate a significant problem with the heart muscle.

Ejection fraction	What it generally indicates	Typical next step
50%-70%	Normal pumping range	Routine follow-up as needed
40%-49%	Mildly below normal	Review medicines, repeat the measurement
Below 40%	Reduced pumping strength	Cardiology referral and treatment planning

A normal echocardiogram means the valves, chambers and heart-wall movement all look normal. When symptoms change, new breathlessness, new swelling, a new murmur, the measurement is repeated, rather than on a fixed calendar. A repeat echo with no change in clinical status is generally treated as not medically necessary under Medicare coverage rules, which is why patients are asked about new symptoms before a repeat is scheduled. Readers tracking risk across life stages can continue with women’s heart health after menopause.

Does Medicare Cover an Echocardiogram?

Yes, Medicare Part B covers a provider-ordered diagnostic echocardiogram when it is ordered to find or treat a medical problem. After the deductible, the patient pays 20% of the Medicare-approved amount in a physician’s office or independent testing facility, and more if the test is performed as a hospital outpatient.

Why the echo is ordered	Covered by Medicare Part B?	What the patient typically pays
A symptom or known condition is being evaluated	Yes, when the treating practitioner orders it	20% of the Medicare-approved amount after the deductible
Screening only, because risk factors are present	No	The full cost of the test

Two quality expectations sit behind that coverage. The test must be ordered by the practitioner treating the problem, a requirement set out in Centers for Medicare & Medicaid Services (CMS) billing and coding guidance for echocardiography, and Medicare expects the technical portion to be performed by a physician or a credentialed cardiac sonographer, or at an accredited echocardiography laboratory. Cost sharing varies by plan and by site of service, including Medicare Advantage and Medi-Cal/Inland Empire Health Plan (IEHP) coverage, so patients are pointed to the insurance accepted at Arrae Health page rather than given a single figure. Preventive visit coverage is explained separately in Medicare Annual Wellness Visit.

Where Can Southern California Patients Have a Heart Echo Test Done?

Arrae Health serves patients across the Inland Empire – Corona, Norco, Eastvale, Chino Hills, Riverside, Jurupa Valley, Colton, Redlands and Loma Linda –  and across the Coachella Valley, including Palm Springs, Palm Desert, Rancho Mirage, Cathedral City and Desert Hot Springs. Patients in Lake Elsinore, La Quinta and Indian Wells are served by the nearest location; those three cities do not yet have their own location pages on this site, so no link is offered for them here.

• primary care in Corona
• primary care in Riverside
• primary care in Palm Springs
• Arrae Health locations

Medicare, Medicare Advantage, and Medi-Cal/IEHP are accepted, and open enrollment period questions are handled at the front desk. The practical first step is a primary care visit: because the test must be ordered by the practitioner treating the problem, the appointment that establishes the symptom is the appointment that begins the process.

Frequently Asked Questions

How long does an echocardiogram take?

A standard transthoracic echocardiogram usually takes 30 to 60 minutes, and a transesophageal study can run up to about 90 minutes. Arriving early matters more than the scan time itself, since check-in and preparation sit outside the measured duration.

Do patients need to fast before an echocardiogram?

No fasting is needed for a standard surface echo; eating and drinking normally is fine. A transesophageal echocardiogram requires roughly eight hours with nothing to eat or drink, and a stress echo follows the ordering provider’s specific instructions on food, caffeine, and medicines.

What is a normal ejection fraction on an echocardiogram?

A normal left-ventricular ejection fraction is 50% to 70%. A measurement below 40% can indicate a significant heart muscle problem and typically prompts a cardiology referral; values between 40% and 49% are mildly reduced and usually mean a medicine review and a repeat measurement.

Is an echocardiogram the same as an EKG?

No. An EKG records the heart’s electrical activity and rhythm, while an echocardiogram uses sound waves to show chamber structure, valve function, and pumping. A normal EKG therefore does not exclude a structural problem, which is why both tests are often ordered together.

Can a patient drive home after an echocardiogram?

Yes, after a standard surface echo. No after a transesophageal echo — a sedative is used, and driving is not permitted for 24 hours, so a driver must be arranged in advance.

Is a heart echo test the same as an echocardiogram?

Yes. “Heart echo test,” “heart ultrasound,” “heart sonogram,” and “echocardiogram” all describe the same examination. It can be ordered through a primary care visit, which is usually the fastest route to having it scheduled.

Conclusion

An echocardiogram is a sound-wave picture of how the heart is built and how well it pumps, not a radiation test, not the same as an EKG, and not a routine yearly screen. The two facts that matter most sit side by side: the test reveals valve, chamber, muscle, and clot problems an electrical tracing cannot show, and Medicare covers it when a treating practitioner orders it for a specific medical problem. The next step is a single action: raise the symptom at a primary care visit and let the physician decide whether an echo is the right test.

Have a Heart Echo Ordered and Completed in the Inland Empire or Coachella Valley. Arrae Health accepts Medicare, Medicare Advantage, and Medi-Cal/IEHP, and a primary care visit is the fastest way to have cardiac imaging ordered. book an appointment or contact Arrae Health, or call 951-281-2730.