If a transthoracic echocardiogram doesn’t produce definitive images, your doctor may recommend a transesophageal echocardiogram (commonly called a TOE). In this procedure, the doctor guides a much smaller transducer down your throat through a thin, flexible tube in your mouth. They will numb your throat and use anesthetic sedation for the procedure.
This tube is guided through your oesophagus, the tube that connects your throat to your stomach. With the transducer behind your heart, your doctor can get a better view of any problems.