Transoesophageal Echocardiogram (TEE / TOE)
High-resolution heart ultrasound from within the oesophagus — detailed imaging of heart valves, blood clots and structural abnormalities.
What is It?
A Transoesophageal Echocardiogram (TEE) is a specialised ultrasound test that produces exceptionally detailed images of the heart by capturing pictures from inside the oesophagus (food pipe), which sits directly behind the heart. Because the ultrasound probe is positioned closer to the heart, TEE provides significantly clearer and more precise images than a standard echocardiogram.
At One Heart Centre, our cardiologists have expert training in performing transoesophageal echocardiography, ensuring the highest quality diagnostic imaging for complex cardiac conditions.
Why is It Performed?
At One Heart Centre, our cardiologists may recommend a TEE to:
- Assess heart valves in exceptional detail
- Detect blood clots within the heart chambers
- Investigate the cause of stroke or unexplained embolism
- Diagnose infection of the heart valves (endocarditis)
- Evaluate congenital heart abnormalities
- Guide and support certain cardiac procedures
TEE is particularly valuable when standard echocardiography does not provide sufficient detail for clinical decision-making.
What Does the Test Involve?
You will be asked not to eat or drink for several hours before the procedure. On arrival, a small cannula is placed in your arm and you are given light sedation to help you relax and remain comfortable throughout. Your throat is also numbed with a local anaesthetic spray.
A thin, flexible ultrasound probe is gently passed down your throat into the oesophagus. While the probe is in position, detailed images of your heart are captured. Your heart rhythm, oxygen levels and blood pressure are monitored continuously throughout the test.
The procedure usually takes 20–30 minutes. After the test, you will be observed until the sedation wears off and will need someone to accompany you home. You should not drive for the remainder of the day.
What are the Benefits?
- Exceptional image quality of heart valves, chambers and surrounding structures
- Accurate detection of blood clots, infections and structural abnormalities
- Helps guide critical treatment and surgical planning decisions
- Safe, well-tolerated and carefully supervised by experienced staff
- Often avoids the need for more invasive diagnostic procedures