TOE (Transoesophageal Echocardiogram)

An echocardiogram (echo) uses inaudible sound waves to produce moving images of the heart. A Transoesophageal Echo (TOE) is where the ultrasound probe is positioned in oesophagus (feeding tube connecting mouth to the stomach) behind the heart from where high definition close up images of the heart can be obtained. The TOE test provides a close look at the heart’s valves and chambers, without interference from the ribs or lungs. 


The ultrasound probe is mounted at the tip of a long thin flexible tube, which is guided down the patient’s throat into the oesophagus. The procedure is like gastroscopy performed by endoscopists.


TOE is only done in a hospital either under sedation and local anaesthesia or under general anaesthesia under the supervision of a qualified anaesthetist.

Why is this test performed?

TOE is often used when the results from standard echo tests are not sufficient, or when your doctor wants a closer look at your heart, especially the valves, to look for any hole in the heart, or to look for other problems like infections, growths and tumours, congenital heart disease etc. It is also very useful for prosthetic heart valve check-up. A TOE is also sometimes done before electrical cardioversion for any arrhythmias to rule out any blood clot in hidden parts of the heart.

Before the Procedure


After the Procedure


After the cardiologist has done the test and reviewed the images, the report will be written and sent to your referring physician and will be discuss with you as well.

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