Echocardiogram Test

If your doctor has recommended an echocardiogram test, you might be wondering what it is and why it’s needed. Simply put, an echocardiogram (often called an “echo”) is a safe, painless ultrasound of your heart. It uses sound waves to produce real-time moving images, showing how well your heart is pumping, whether its valves are working, and if there are any structural problems. It uses no radiation, no needles, and is safe for people of all ages, including during pregnancy.

A common confusion is between an echo and an ECG (electrocardiogram). An ECG records the electrical activity of your heart — think of it as checking the wiring. An echo looks at the heart’s structure and motion — think of it as checking the plumbing and the pump. They are complementary, not interchangeable. This guide will walk you through what to expect during the test, how to prepare, what the results mean, and the typical costs in Bangladesh.

What Is an Echocardiogram Test?

An echocardiogram uses a small device called a transducer, which sends high-frequency sound waves (ultrasound) through your chest. These waves bounce off your heart structures and return as echoes, which are converted into moving images on a screen. It is completely radiation-free, making it safe even for repeated use, and it does not cause any pain. The test is routinely used worldwide and is considered a cornerstone of cardiac assessment.

Why Might Your Doctor Recommend an Echocardiogram?

Doctors recommend an echo for a variety of reasons. It helps evaluate symptoms like chest pain, shortness of breath, palpitations, or a heart murmur heard during a routine check-up. It can also help diagnose or monitor conditions such as:

• Heart failure (weak pumping function)
• Valve problems (leaking or narrowing)
• Cardiomyopathy (heart muscle disease)
• Congenital heart defects (present from birth)
• Pericarditis (inflammation of the sac around the heart)
• Follow-up after a heart attack or heart surgery

If you have risk factors like high blood pressure, diabetes, or a family history of heart disease, your doctor may also recommend an echo as a baseline check.

Types of Echocardiogram: Which One Do You Need?

There are three main types of echocardiogram. Your doctor will select the one that best answers the specific question about your heart. The table below outlines the key differences.

TTE is the most common and does not require any sedation or special preparation. TEE is more invasive and involves fasting and sedation, but it provides clearer images of certain areas.

How to Prepare for an Echocardiogram

Preparation is minimal and depends on the type of echo you are having:

• Transthoracic Echo (TTE): No special preparation is needed. Wear comfortable, loose-fitting clothing. You can eat, drink, and take your regular medications as usual unless your doctor specifically tells you otherwise.
• Stress Echo: Avoid caffeine (coffee, tea, cola, chocolate) and smoking for at least 4 hours before the test. Your doctor may ask you to stop certain heart medications beforehand.
• Transesophageal Echo (TEE): You will need to fast for 6 hours (no food or drink) before the test. Arrange for someone to drive you home afterward, as you will be sedated.

Always follow the specific instructions given by your doctor or the diagnostic center.

What Happens During the Test?

Transthoracic Echo (TTE): You will lie on an examination table, usually on your left side. A technician will apply a cool gel to your chest to help the sound waves travel. They will then move a small wand (transducer) gently across your chest. You may be asked to breathe slowly or hold your breath for a few seconds to get clearer images. You will not feel any pain, and you can watch the images on the screen if you wish. The test is completely safe with no side effects.

Stress Echo: After a resting echo, you will walk on a treadmill or pedal a stationary bike. Once your heart rate reaches a target level, you lie down quickly for another echo. If you cannot exercise, a medication is given to simulate the effect of exercise on your heart.

Transesophageal Echo (TEE): The back of your throat is numbed with a spray, and you receive a mild sedative through an IV. A thin, flexible tube is then gently guided down your esophagus. You may feel pressure but not pain. The camera takes close-up images of your heart from inside the chest.

Understanding Your Echocardiogram Results

Results are interpreted by a cardiologist. They will produce a report with several key measurements. Here are some common terms you might see:

• Ejection Fraction (EF): The percentage of blood your heart pumps out with each beat. A normal EF is typically between 50% and 70%.
• Valve Function: Whether the valves open and close properly (no stenosis or regurgitation).
• Wall Motion: How well the heart muscle moves. Abnormal motion can indicate a past heart attack or poor blood supply.
• Chamber Size: Whether the heart chambers are enlarged.

Normal ranges vary by age, body size, and overall health. Your doctor will explain what the numbers mean in your specific situation. A normal echo does not necessarily rule out all heart problems — it provides a snapshot of your heart at that moment.

Cost of Echocardiogram in Bangladesh

Costs for an echocardiogram in Bangladesh vary widely depending on the type of test, the diagnostic center, and the city. The table below provides approximate ranges for private labs and hospitals. Prices are typically higher in Dhaka and lower in district towns. Many public hospitals (e.g., NICVD, BSMMU, and district-level cardiac centers) offer subsidized rates, often between ৳500 and ৳1,000 for a standard TTE. Always confirm current prices with the center before booking, as they can change.

Prices are approximate and may vary. Many insurance plans cover echocardiograms; check with your provider.

Choosing a Reliable Diagnostic Center in Bangladesh

When selecting a center for your echo, consider these factors:

• Qualified Cardiologist: Ensure a cardiologist is involved in performing or interpreting the test. Many labs employ experienced technicians, but a cardiologist’s review is essential for accurate diagnosis.
• Modern Equipment: Look for centers with up-to-date ultrasound machines that offer Doppler and 3D imaging when needed.
• Reports: Ask if you will receive a detailed written report with all measurements and a summary.
• Referral: Your doctor is often the best source of a trusted referral. Many hospitals and clinics in Dhaka (e.g., Square, United, Apollo in Dhaka, and district-level cardiac centers) offer echo services.

To help you find a qualified cardiologist in your area, use the table below:

Frequently Asked Questions

Can an echocardiogram show if my coronary arteries are blocked?

An echocardiogram cannot directly see inside your coronary arteries, so it cannot show a specific blockage. However, it can detect areas of the heart muscle that are not moving well, which may suggest a previous heart attack or reduced blood flow. A stress echocardiogram can show temporary wall-motion changes that hint at significant narrowing. If your doctor needs to see the arteries themselves, you may need a coronary angiography or a CT coronary angiogram.

Do I need to stop taking my blood pressure or heart medicines before an echo?

For a standard resting echocardiogram, you should usually take all your regular medicines as prescribed. But for a stress echocardiogram, some medications like beta-blockers or certain blood pressure tablets may need to be held because they can affect how your heart responds to exercise or medication. Never stop any medicine on your own — always follow your doctor’s specific instructions.

How long does an echocardiogram take, and when will I get the results?

A standard transthoracic echocardiogram usually takes about 20 to 40 minutes. The ultrasound images are recorded during the test, but a cardiologist needs to review and interpret them, so results may be available within a few hours or could take 1–2 days depending on the diagnostic center. If the test is done in an emergency setting, a doctor may give you preliminary findings right away.

What is a normal ejection fraction, and what does a low number mean?

Ejection fraction (EF) is the percentage of blood your left ventricle pumps out with each heartbeat. A normal EF is generally between 50% and 70%. A lower EF (for example, under 40%) suggests the heart muscle is weakened and may be associated with conditions like heart failure. However, EF alone does not tell the whole story — a single mildly low reading can have many causes. Your cardiologist should interpret it along with your symptoms and other test results.

Is an echocardiogram safe if I have a pacemaker or a metal heart valve?

Yes. Echocardiography uses only sound waves and no magnetic fields or radiation, so it is completely safe with pacemakers, defibrillators, metal prosthetic valves, coronary stents, and other implants. The ultrasound probe simply touches your chest or is passed down the esophagus in certain cases. Always tell the technician about your devices before the test, but you do not need to worry about them being affected.

Sources

The following sources are from international journals, government health agencies, or recognized medical organizations:

• Echocardiogram – Mayo Clinic (mayoclinic.org)
• Echocardiogram – NHS (nhs.uk)
• Echocardiogram – Cleveland Clinic (my.clevelandclinic.org)
• Echocardiography – MedlinePlus (NIH) (medlineplus.gov)
• World Health Organization — Echocardiogram Test (who.int)
• MedlinePlus — Echocardiogram Test (medlineplus.gov)