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Transesophageal echocardiogram

  • A transesophageal echocardiogram (TEE) records ultrasound images of your heart.

    The transducer, about the size of a normal piece of food, is mounted on the end of a flexible tube, about the size of your index finger. The tube is placed in your mouth and guided down your esophagus (swallowing tube).

    You will be given medicine to help numb the back of your throat. This will make swallowing the tube easier.

    The TEE gives excellent pictures of your heart because the heart is next to your esophagus.

    The procedure will take 1½ to 2 hours.

    Before the procedure

    Take these steps to get ready for a transesophageal echocardiogram (TEE).

    • If you have diabetes, talk with your doctor about taking your medicine. Follow any special instructions.
    • You may eat up to eight hours before your procedure.
      • Eat light meals, such as oatmeal or toast.
      • Avoid foods that are heavy or high in fat, such as meat or fried foods.
    • Do not use chewing tobacco six hours before your procedure.
    • You may have clear liquids up to two hours before your procedure.
      • Drink water, fruit juice without pulp, black coffee, tea, hard candies and gum.
      • Do not have milk, yogurt or alcohol.
    • Take your regular medicine(s) with a small sip of water.
    • If you are not staying in the hospital overnight, plan to have a responsible adult drive you home and stay with you for eight hours after the test.
    • You will sign a consent form.

    During the procedure

    Here is what to expect during a transesophageal echocardiogram (TEE).

    • In the exam room, you will be asked to undress to your waist. You will receive a hospital gown to wear.
    • If you wear dentures, you will be asked to remove them.
    • Electrocardiogram (ECG or EKG) patches will be put on your chest to monitor your heartbeat.
    • A blood pressure cuff will be put on your arm to monitor your blood pressure.
    • A probe will be put on a finger to monitor the amount of oxygen in your blood.
    • An intravenous (IV) line will be inserted in your hand or arm for fluids or medicines.
    • You will be awake during the test, but you will be given medicine to make you more comfortable and relaxed.
    • Your throat will be sprayed with a numbing medicine. This medicine will stop your gag reflex.
    • You will be asked to lie on your left side during this test while the doctor inserts the flexible tube. A bite block may be placed in your mouth to rest against your teeth.
    • The tip of the tube produces sound waves. The sound waves bounce off your heart and are changed into pictures on a screen.
    • The cardiologist will move the tube into place and take pictures of your heart and blood flow for 15 minutes. You may feel the tube move. It should not cause you pain or breathing problems.

    Bubble study

    A bubble study may be done during the TEE.

    A saline (salt water) solution is injected into an arm vein. Ultrasound tracks the solution as it flows through your heart.

    This is a painless test.

    After the procedure

    After a transesophageal echocardiogram (TEE), you can expect the following:

    • Your heart, blood pressure and oxygen levels will be monitored for about 30 minutes after the tube is removed.
    • Once you are awake and are alert, you will be sent back to your room or be able to go home. Have someone drive you home.
    • Do not eat or drink anything for two hours after your test.
    • Do not eat hot food or drink for six hours after the procedure.
    • Do not drink alcohol for 24 hours after the procedure.
    • Do not drive for 24 hours after the procedure.
    • You may have a dry, scratchy throat. You may drink lots of water and use cough drops to soothe your throat.
    • Your doctor will get the test results. He or she will either talk with you about the results or mail you the results.

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