Transesophageal Echocardiogram (TEE)

⚠️ Important Note:
The information on this page provides a general overview of the procedure. The exact instructions and experience may differ depending on the hospital or institution where your test is performed. If there is any difference between what is written here and what your medical team has told you, always follow the guidance provided by the team performing your procedure.

What is a TEE?

A transesophageal echocardiogram (TEE) is a specialized heart ultrasound where the imaging probe is placed down your esophagus (the food pipe). Since the esophagus sits just behind the heart, this allows your cardiologist to get clearer, more detailed images of your heart structures than a standard echocardiogram done from the chest wall.

Why is a TEE done?

Your doctor may recommend a TEE to:

Look for blood clots inside the heart (especially in atrial fibrillation)
Assess your heart valves (for leaking, narrowing, or infection)
Evaluate for structural heart conditions (e.g. holes in the heart, masses)
Guide certain procedures (like cardioversion or heart surgery)

What should I expect on the day of the test?

Where will it take place?

You’ll have the test done in a hospital or specialized cardiac diagnostic unit. It’s a routine, commonly performed outpatient procedure.

Who will be in the room?

A cardiologist (who performs the TEE)
A nurse (to assist and monitor you)
A respiratory therapist or anesthesia provider (if sedation is used)

What does the room look like?

A hospital bed where you’ll lie on your left side
An ultrasound machine with a monitor
Monitoring equipment for your heart rate, blood pressure, and oxygen
A small, flexible ultrasound probe designed to go down the throat

How long does it take?

The procedure itself takes about 10–20 minutes.
Expect to be at the hospital for 1.5–2 hours in total (including prep and recovery).

What will happen during the test?

You’ll be asked to fast for 6 hours before the test.
A nurse will place an IV and monitor your vital signs.
You’ll receive a numbing spray for the throat and usually mild sedation to help you relax.
The doctor will gently guide the probe into your esophagus while you’re lying on your side.
You may feel pressure in the throat, but it should not be painful.
You’ll breathe on your own throughout the procedure.
After imaging is complete, the probe is removed, and you’ll be observed during recovery.

What should I tell my doctor before the test?

If you have difficulty swallowing or a history of esophageal conditions (e.g. strictures, varices)
Any allergies to sedation medications
If you use CPAP for sleep apnea
A list of your current medications

Are there any risks?

A TEE is considered very safe. Rare risks include:

Sore throat (most common, usually mild)
Reaction to sedation (e.g. drowsiness, low blood pressure)
Esophageal injury (very rare)

You’ll be closely monitored during the procedure to keep you safe.

What happens after the test?

You’ll rest in a recovery area until the sedation wears off (usually 30–60 minutes)
You must have someone accompany you home — you cannot drive the same day
Avoid eating or drinking for 30–60 minutes afterward until your throat is fully back to normal
You may feel groggy or have a sore throat for a few hours

How to prepare

Do not eat or drink anything for 6 hours before your appointment
Take medications as directed (unless told otherwise)
Arrange for someone to take you home
Bring a list of your medications and any questions you have

Frequently Asked Questions

Will I be awake during the test?
Most patients receive light sedation and remain awake but drowsy. You may not remember the procedure clearly.

Will it hurt?
You may feel pressure or gagging when the probe goes in, but this is brief and mild. A numbing spray and sedation help make it more comfortable.

Can I talk during the test?
You won’t be able to talk while the probe is in place, but the team will communicate with you and ensure you’re comfortable.

When will I get the results?
The cardiologist will review the images and your doctor will explain the results to you, often the same day or at a follow-up visit.