What is a Transoesophageal Echo (TOE)?
This is an ultrasound (sound wave) test that allows clear pictures of the heart to be taken. An ultrasound probe mounted on a thin flexible tube will be passed through your mouth into your gullet.
Why do I need a TOE?
The reason for doing a TOE is to study the structure and function of the heart in greater detail than can be obtained when the scan is done from the front of the chest. The stomach lies just below the heart and allows close up views to be taken.
On the day of the test
- Before the test takes place, you will be asked to give your consent.
- This test is normally performed as a day-case unless arranged otherwise at pre-assessment.
- You must not have anything to eat or drink for six hours before the test.
- You will be given a hospital gown to change into and the nurse will put a small needle into your arm. This is so that an injection can be given to make you feel drowsy.
- The nurse will complete a checklist and ask you about things such as allergies, swallowing problems or loose teeth. They will also check your blood pressure and pulse.
- You will be taken to the cardiac lab where the test will take place.
- It is best that you do not wear contact lenses for this procedure.
What does it involve?
- A specialist doctor will perform the test assisted by a technician and a nurse.
- Your throat is sprayed to numb the back of the throat and you will be asked to swallow.
- You will be asked to lie on your left side and when you are ready, a mouth guard is placed between your teeth. This protects the probe and your mouth.
- A sedative is given through the needle in your arm. When you are sufficiently sleepy, the probe is gently passed through the guard and over the tongue. At this stage you will be asked to swallow, this allows the probe to pass down into the stomach.
- The probe is moved around, and a series of pictures are taken. You may feel some slight discomfort at this time. The test takes about 30 minutes.
After the test
- After the pictures have been taken the probe is removed and you will be taken back to the ward and allowed to rest.
- The nurses will check your blood pressure and pulse at regular intervals until the sedation wears off.
- When you are able to swallow you will be offered something to eat and drink. This takes a minimum of one hour.
- The results and any treatment will be discussed with you before you go home.
- Because you have had sedation, you will be unable to drive so you must arrange for someone to collect you. You should not sign any legal documents, drink alcohol, operate heavy machinery or use power tools for the next 24 hours.
Are there any risks?
This is a very safe test.
- There is a small risk of damage to the gullet, but this rarely causes any major problems. Dental damage could occur, but you will be asked about vulnerable teeth beforehand. Likewise, you will be asked beforehand if you have any problems with swallowing.
- The sedation may cause temporary problems with blood pressure or a slow heart rate. You are closely monitored to detect any problems.
- You will have time to discuss these risks with the doctor before you sign your consent form.
Can I contact the ward when I get home?
Yes! This is encouraged. We do not want you to have any questions unanswered or worries. You can ring us on our direct line 0191445 3840. If you, your carer or family have any worries about your care at home, please discuss them with any member of the nursing team.
If the unit is closed please contact your GP.