Transesophageal Echocardiogram (TOE)

Procedure Information

How do I prepare for TOE?
Check with your doctor. He or she may ask you not to have alcoholic drinks for a few days before the test, and not to eat or drink anything for at least 4 to 6 hours before TOE. Because you receive a sedative to help you stay calm, someone should drive you home after the test.

What happens during TOE?
Specially trained cardiologist perform TOE. It’s usually done in a hospital or a clinic and lasts 30 to 60 minutes.

• A technician sprays your throat with a medicine to numb it and suppress the gag reflex. You’ll lie on a table.
• A nurse puts an IV (intravenous line) in your arm, and gives you a mild sedative (medicine) to help you stay calm.
• The technician then places small metal disks (electrodes) on your chest. He or she attaches the electrodes by wires to a machine that will record your electrocardiogram to track your heartbeat.
• The doctor then gently guides a thin, flexible tube (probe) through your mouth and down your throat, and asks you to swallow as it goes down.
• A transducer on the end of the probe sends sound waves to your heart and collects the echoes that bounce back. These echoes become pictures that show up on a video screen. This part of the test takes 10 to 15 minutes.
• When the doctor is finished taking pictures, the probe, IV and electrodes are removed and nurses watch you until you are fully awake. Then you can usually get up, get dressed and leave the clinic or hospital.

What happens after TOE?
Your throat may be numb for a short time. Don’t eat or drink anything until the numb feeling goes away — you could choke.

• You may have a little trouble swallowing right after the test, but this will go away within a few hours.
• It’s common to have a sore throat for a day or two after the test.
• Because of the sedative you get during the procedure, don’t drink alcohol for a day or two.

What should I watch for?
If your sore throat gets worse or doesn’t go away after a few days, call your doctor.