Exams Performed in the Echocardiography (ECHO) Lab Echocardiography (Echo) Lab | Page 6

Transesophageal Echocardiogram (TEE)
A transesophageal echocardiogram (TEE) is a special type of test that uses a tube-shaped
device called an endoscope to carry the ultrasound transducer through the mouth into the
throat and down the esophagus (“food pipe”). A TEE is performed when your doctor needs
to take a close look at your heart valves or other cardiac structures and is unable to get the
needed information from a regular echo.
Why is a TEE performed?
The test is used to:
• Determine how well your heart valves are working and check for infections, such as
endocarditis.
• Check for myocardial, pericardial, aortic, and congenital heart disease.
• Check for blood clots in the top left chamber of your heart (left atrium).
Before the test
Please tell your doctor if you have any problems such as difficulty swallowing or problems
with your esophagus or hiatal hernia. Plan for someone to come with you to drive you
home.
Can I eat or drink on the day of the test?
• DO NOT eat or drink anything for at least six hours before the test. Water is OK up to two
hours before the test.
• Any medication should only be taken with small sips of water.
Should I take my medications the day of the test?
Yes. Please take all of your medications as previously prescribed by your doctor.
Guidelines for People with Diabetes
If you take insulin to help control your blood sugar, ask your physician what dose you
should take the day of the test. It is common for a physician to suggest taking half the
usual morning dose and eat a light meal four hours before the test.
If you take pills to help control your blood sugar, DO NOT take your medication until after
the test is complete.