Oesophageal manometry

The digestive system is a hollow tube from the mouth to the anus (where poo leaves the bottom). The walls of the tube contain muscles and nerves that squeeze food rhythmically through the system. If the muscles and/or nerves are not working properly, food cannot pass through the digestive system.

Manometry is a way of measuring how well the muscles and nerves in the digestive system are working. Oesophageal manometry looks at the muscles and nerves in the oesophagus (food pipe).

You will already have received information about how to prepare your child for the test in your admission letter.

The person bringing your child to the test should have ‘parental responsibility’ for them. This is someone who has legal rights, responsibilities, duties, power and authority to make decisions for a child. If the person bringing your child does not have parental responsibility, we may have to cancel the test.

The doctors will explain about the test in more detail, discuss any worries you may have and ask you to sign a consent form giving permission for your child to have the test.

If your child has any medical problems, particularly allergies, please tell the doctors about these. Please also bring in any medicines that your child is currently taking and show these to the doctor.

If your child is taking domperidone, erythromycin, baclofen or metoclopramide, they must stop taking this 72 hours before the day of the test.

An oesophageal manometry is done while your child is awake. If your child also needs a gastroscopy, the manometry catheter can be placed at the same time as the gastroscopy. If your child is due to have an anaesthetic for a gastroscopy, please refer to the gastroscopy information sheet for further instructions. Fasting times are provided in your admissions letter.

The oesophageal manometry will take place in the Gastroenterology Investigation Suite. A nurse or doctor will stay with your child throughout.

The nurse or doctor will put the catheter up one of your child’s nostrils and pass it down the back of their mouth into the oesophagus. The catheter contains lots of sensors that can record nerve and muscle reactions.

Inserting the catheter does not hurt, but it may be uncomfortable. Your child may cough, sneeze or gag when the catheter is put in. If your child is awake when the catheter is placed, you can stay with them the entire time.

The catheter will be taped to your child’s cheek to stop it from moving. Once the catheter is in the correct place, the catheter is attached to a machine, which measures how well the muscles and nerves are working.

During the test your child will need to drink and then eat something. If your child is having this test because food gets stuck, it is a good idea to bring a food that typically gets stuck with you.

If your child has food allergies, you may wish to bring something that they like with you. However, there is a special diet kitchen that can prepare food for allergies. Please inform the nurse on your arrival if your child will require a special meal.

When the catheter is being inserted, it can scratch the inside of the nose and make it bleed. This rarely causes any serious problems.

There is very small risk the catheter could damage your child’s oesophagus. However, this is very unlikely as the catheter is flexible, and the doctors and nurses are very experienced.

If your child is having an anaesthetic for this test, their sleep pattern may be altered for up to 48 hours after the test. The time it takes to recover from an anaesthetic varies from child to child-encourage your child to rest if they are still sleepy the following day.

As your child had nothing to eat or drink for some time before this test, there is a small chance that they may be mildly dehydrated afterwards. Symptoms of dehydration include dry lips, pale skin, sunken eyes, not passing urine (not weeing). Whilst on the ward and once you get home, encourage them to drink as frequently as possible.

The nurse or doctor will remove the catheter, and your child will be able to go home.

If your child has had an anaesthetic your child will return to the ward. Once they have passed urine (had a wee) and the nurses are happy your child is recovering, they will remove the cannula, and you will be able to go home.

Your child can carry on doing what they usually do - there are no restrictions on their activity.

If your child had a gastroscopy at the same time, please follow the instructions on the gastroscopy information sheet as well as this one.

We will discuss the results at your child’s next outpatient appointment. The analysis of this test is complicated so it can take some time to get the results. If we need to start your child on a new treatment before the appointment, we will contact both you and your child’s GP.