Transesophageal electrocardiogram

A standard ECG records electrical activity through stickers placed on the chest and limbs. A transesophageal approach places a sensor in the oesophagus, which lies close to the heart, and is used in specialist settings when a more local signal is needed. It is not the same as a transesophageal echocardiogram, which uses ultrasound to create pictures of the heart.

Because the wording can be confused, check the exact test name on your appointment letter. A clinician may have meant a standard electrocardiogram, an electrophysiology procedure or a transesophageal ultrasound examination. The reason may relate to rhythm assessment or another heart concern.

Contact the clinic if the test name is unclear, and tell them about swallowing problems, reflux, food allergies, loose teeth, pregnancy or medicines that affect bleeding. Follow their fasting, medication and transport instructions rather than assuming the preparation for a surface ECG applies.

Bring a list of symptoms and medicines. Ask whether the test is performed with monitoring or sedation, how long you should plan to stay, and when results will be discussed. Do not stop heart medicines unless the treating team specifically tells you to.

Before testing, seek emergency help for severe chest pressure, fainting, sudden severe breathlessness or a new rapid heartbeat with weakness. After an oesophageal procedure, seek urgent advice for severe chest or throat pain, trouble breathing, vomiting blood or difficulty swallowing that is getting worse.

Ask which test is planned and why, whether it is a surface ECG or an oesophageal procedure, and what preparation is required. Ask how rhythm findings will affect care if you have atrial fibrillation, angina or heart failure.