Transesophageal Echocardiogram
A TEE is a test which uses a flexible tube that produces ultrasound waves to create pictures of the heart from inside of the esophagus (tube connecting mouth to the stomach or “food pipe”) and stomach. Sound waves are transmitted from the probe, into your body. The sound waves reflect (echo) off the tissues and organs to create pictures which can be seen on a screen.
The test is used to:
The TEE provides very clear pictures of the heart structures and blood flow. The pictures are usually clearer than those obtained from a standard echocardiogram, which is performed from the chest wall. This test is often used to view hard-to-see structures or to obtain more detailed pictures of the heart and aorta.
Common reasons for the test include measuring the size and pumping strength of the heart and looking at the shape and motion of the heart valves. This test may also be used to look for fluid around the heart and blood clots or masses inside of the heart or aorta.
Preparing for the test
- Do not eat or drink for 6 hours before the test.
- You can wear whatever you like. You will need to change into a hospital gown to wear during the procedure.
- This test is performed at the hospital, do not bring valuables.
- Tell your doctor or nurse if you have a problem with swallowing or a history of esophagus or stomach conditions, such as hiatal hernia or cancer.
- Take all of your medications at the usual times, as prescribed by your doctor. If you have diabetes and take medications to manage your blood sugar, ask your physician how to adjust your medications the day of your test.
- Tell your doctor or nurse if you have any allergies to medicines, especially medicines that make you relax.
- Bring someone with you to drive you home after the test. You should not drive until the day after the procedure. Sedation given during the procedure causes drowsiness, dizziness and impairs your judgment, making it unsafe for you to drive or operate machinery.
What to expect during the test
- Before the test, a cardiac sonographer, nurse or physician will explain the procedure in detail, including possible complications and side effects. They will be available to answer any questions you may have.
- You will be asked to change into a hospital gown.
- The nurse will connect you to several monitors:
- Electrocardiogram (ECG): Three electrodes (small, flat, sticky patches) will be placed on your chest. The electrodes are attached to an electrocardiograph monitor (ECG) that charts your heart’s electrical activity.
- Blood pressure monitor: A blood pressure cuff will be placed on your arm to monitor your blood pressure intermittently throughout the test.
- Oximeter: A small clip is placed on your finger. The device monitors the oxygen level of your blood.
- An intravenous (IV) line will be inserted into a vein in your arm or hand so medications can be delivered when necessary.
- A local anesthetic will be sprayed to numb the back of your throat and medicine will be given through your IV to help you relax and feel sleepy.
- You may be asked to lie on your left side on an exam table.
- The doctor will gently insert the probe into your mouth. As you swallow, the probe will be directed into your esophagus. You may feel the probe moving, but it is generally not painful and will not interfere with your breathing. When the probe is positioned in the esophagus just behind the heart, pictures of the heart will be taken.
- The test will take about 1 1/2 hours.
What to expect after the test
- The nurse will give you instructions about when you may eat or drink.
- Your throat may feel slightly sore for about one day. When you can start drinking, soothe your throat with cold liquids and lozenges.
- Do not drive for 12 hours.
- Avoid alcoholic beverages for 12 hours.