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Home » Heart » Coronary Heart Disease » What is an Echocardiogram or Echocardiography (Echo Test)?

What is an Echocardiogram or Echocardiography (Echo Test)?

sufyanBy sufyanUpdated:October 3, 20195 Mins Read
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Contents Hide
1 What is echocardiogram and echocardiography?
2 Benefits of an echo test: Why do doctors ask for an echo test?
3 What are the types of echocardiograms?
4 What are the risks associated with an echocardiogram (echo test)?
5 How to prepare for an echocardiogram?
6 What happens during the echo test? How is the procedure done?
7 What happens after an echocardiogram?

What is echocardiogram and echocardiography?

An echocardiogram (sometimes also called echo) is a test that uses high frequency sound waves (ultrasound) to generate pictures of your heart. The test is also called echocardiography or cardiac ultrasound.

An echo test uses sound waves to create pictures of the chambers, valves, walls and the blood vessels (aorta, arteries, veins) of your heart. A probe called a transducer is passed over your chest. The probe produces sound waves that goes to the heart and echo back to the probe. The pictures of heart so generated can be viewed on a video monitor or a screen.

An echo test does not cause any harm to you unlike radiations such as X rays etc.

Benefits of an echo test: Why do doctors ask for an echo test?

Your doctor may ask you for an echo test to look at your heart’s structure and check how well your heart functions and if there is any abnormality therein or not.

The test helps your doctor find out many things such as:

  • Size and shape of your heart
  • Whether the heart valves are functioning properly
  • Size and thickness of the heart walls
  • Movement of the heart walls
  • Movement of the heart
  • If the blood is leaking backwards through your heart valves (called regurgitation)
  • If there is a stenosis (too narrow heart valves)
  • Problems with the outer lining of your heart (called pericardium)
  • If there is a tumor around the heart valves
  • If there is an infectious growth around the heart valves
  • Problems with the large blood vessels that enter and leave the heart
  • Holes between the chambers of the heart that are not normal
  • Blood clots in the heart chambers
  • Follow the progress of heart valve diseases over time
  • Evaluate the effectiveness of treatment
  • Determine if any other heart disease is present

What are the types of echocardiograms?

There are many types of echocardiograms. Your doctor will determine which is the best for you among them.

Transthoracic echocardiogram

This is the standard echocardiogram. It is painless and uses ultrasound technology similar to the one used to test a baby’s health before birth.

Transesophageal echocardiogram (TEE)

This test requires the transducer or probe to be inserted into the throat and the esophagus (the tube that connects the mouth to the stomach). The esophagus is located close to your heart; therefore, clear images of the heart can be obtained with this procedure.

Stress echocardiogram

This type of echocardiogram is performed with the person on exercises on a treadmill or stationary bicycle.

This test can be used to visualize the motion of the heart’s walls and pumping action when the heart is doing physical activity and is stressed.

Dobutamine stress echocardiogram

This is also a type of stress echocardiogram. However, instead of doing exercises to stress the heart, your heart is made to work harder by giving a drug that stimulates the heart.

Intravascular ultrasound

This is performed during cardiac catheterization. A transducer is threaded into the heart blood vessels via a catheter in the groin. It is generally used to gather detailed information about the atherosclerosis (blockage) inside the blood vessels.

What are the risks associated with an echocardiogram (echo test)?

Echocardiograms are generally considered very safe. Unlike other imaging techniques, such as X-rays, MRI, etc, echocardiograms don’t use radiations.

  • A transthoracic echocardiogram carries no risk
  • A slight discomfort can occur when the electrodes are removed from your skin
  • Though it is rare, but the tube used in a transesophageal echocardiogram may scrape the side of your esophagus which may cause irritation
  • The most common side effects of echocardiogram is sore throat
  • You may feel different due to the use of sedatives
  • The medicines that are given to make your heart work harder can change the heart rhythms slightly for some time

How to prepare for an echocardiogram?

You don’t have to do anything particular for a standard or transthoracic echocardiogram. You can eat and drink before the test like you usually do.

However, if you have a trans-esophageal echocardiogram, your doctor may ask you not to eat anything for a few hours before the test. This is to prevent you from vomiting what you have eaten during the test.

You may not be able to drive for a few hours after the test due to the effect of sedatives.

You may be asked to wear clothes and shoes that are comfortable for exercises.

What happens during the echo test? How is the procedure done?

Echo tests are done by trained technicians. The tests may be done in a doctor’s office, an emergency room, an operating room, or in a hospital. The test takes about one hour. The procedure goes like this:

  • You are asked to lie on a table and a technician places electrodes on your chest. These electrodes have wires that connect to an electrocardiograph machine. An electrocardiogram or (ECG or EKG) records your heartbeat during the test.
  • The room is usually kept dark for better visualization
  • Your technician puts gel on your chest to help sound waves pass through the skin easily
  • The technician may ask you to move or hold your breath to get better pictures intermittently.
  • The probe (transducer) is passed across your chest, which produces sound waves that goes to and bounces off the heart
  • The sound waves convert into viewable pictures that are displayed on a screen.
  • The pictures on the screen can be recorded for a review later

What happens after an echocardiogram?

Your doctor will study the results after the test. The results may reveal abnormalities such as those discussed above in this article.

  • A technician will help you clean the gel from your chest
  • Your doctor will talk to you after looking at your echo reports to discuss the test results with you
sufyan
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Mohd is driven through passion for innovation in healthcare and medical research. He holds a Bachelor in Mechanical Engineering and has spent about one and a half decade in medical research particularly on medical and surgical implants. He is associated with Inventit Inc, a Boston-based technology intelligence company as Director of Innovation and Research Division. Mohd is the primary inventor on three patents in the domain of medical implants for the treatment of urinary incontinence. He is associated with DiseaseFix as a content and research guide. Patents: Implantable medical system Stress urinary incontinence treatment medical implant Medical implants and fabrication of medical implants

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