A closer look at your heart

What is a TEE?

A flexible tube about the size of your index finger is inserted into your mouth and down your esophagus. At the top of the tube is a small probe that produces sound waves. The sound waves bounce off your heart and are changed into pictures on a video screen. The doctor can move the probe up, down, and sideways to look at different parts of your heart from different angles. Your throat is numbed, so you should feel little or no discomfort during the procedure.

Before your TEE

Don't eat or drink for 4 to 6 hours before your procedure. Take any prescribed medications with only a sip of water. Arrange to have someone pick you up after the procedure. Don't plan to drive yourself home, as you may be drowsy.

During your TEE

When you arrive for your TEE, you will change into a hospital gown, and then be taken to the testing room. Your throat is sprayed with an anesthetic to numb it. You may be given a mild sedative through an IV (intravenous) line in your arm to help you relax. You may also be given oxygen. If you wear dentures, you'll need to remove them. You'll be asked to lie on your left side. The doctor gently inserts the probe into your mouth. As you swallow, the tube is slowly guided into your esophagus. The tube is lubricated to make it slide easily. You may feel the doctor moving the probe, but it shouldn't be painful or interfere with your breathing. A nurse monitors your heart rate, blood pressure, and breathing during the test, which usually takes about 20-40 minutes.

Tell your doctor if you take any medications or have ulcers, a hiatal hernia, or problems swallowing, or if you have allergies to any medications or sedatives.

After the Test

If you have sedation, don't drive for 12 hours. Don't eat or drink until your throat is no longer numb. Follow any instructions your doctor gives you.

If your throat is sore, soothe it with cold drinks and lozenges. Report unusual symptoms, such as bleeding, internal pain, or a stiff neck, to your doctor.