Assessments under anaesthetic for your child

Assessments for your child

This leaflet explains the assessments which may be carried out under anaesthetic. An anaesthetic is needed because some of the measurements require your child to be very still. You will be informed in advance which tests your child needs by your Audiologist.

Auditory Evoked Response (AER) testing

This assessment looks at the response of the cochlea (inner ear) and the hearing nerve to sound. Soft plugs are placed in each ear to present sound. Electrodes placed behind the ears and on the head measure the responses.

MRI scan (Magnetic Resonance Imaging)

An MRI is used to look at the inner ear (cochlea) and hearing nerves. There are no known risks or side effects associated with MRI, but please tell departmental staff if there is any reason why your child shouldn’t have an MRI scan, for example, metal implants, artificial heart valve etc. The MRI staff will double-check this with you on the day.

CT scan (Computerised Tomography)

A CT scan uses X-rays to look at the bony parts of the ear including the cochlea.

Blood tests

Blood may be taken for genetic testing if this has been previously agreed with you.

Before the assessment

An appointment letter with detailed instructions will be sent before the day. Your child will have pre-assessment appointment over the phone, nurse from the hospital will to ring you to find out some details of your child’s health and medication before the procedure. The ward may also contact you the night before to confirm everything.

The appointment involves admission as a day case on a children’s ward. The appointment letter includes:

• When to arrive and where to go.
• How long to go without food, milk or water before the appointment – not following these instructions could mean that testing cannot be done.
• You should phone the hospital if your child develops a significant cough or cold within two weeks of the procedure, or diarrhea or vomiting within a few days of the day of the procedure. It may be necessary to delay the procedure until your child is better. Coughs and colds can make children, especially those who are younger, more likely to have difficulties with their breathing under the anaesthetic. It is therefore important that you make the hospital staff aware if your child has been unwell.
• If there are suspicions of COVID with your child, please check with department for latest guidance.

What will happen?

On arrival your child will be assessed by the nurse to check they are fit and well. A consent form will be checked through with you. The anaesthetist will come and visit before your child comes down to the MRI unit and this is a good opportunity to ask any further questions you may have about the anaesthetic. Please bring in all your child’s current medicines with you when admitted to hospital.

You and your child will be taken to the MRI unit, the radiographers will ask a series of questions to ensure it is safe to proceed with the MRI, after which the anaesthetic team will be given an anaesthetic. You can stay with your child while they are given the anaesthetic by a face mask, until they fall asleep. While they are asleep a cannula will be put in their hand or foot, and then the tests will be performed. While this takes place you may wish to visit the food court/café or return to the ward.

The assessments usually take approximately two to three hours, (sometimes less). The ward will contact you when they are complete and tell you where to come and meet your child.

After the assessments

Once back on the ward your child can have something to eat and drink. You may like to bring their favourite snack. The ward nurse will decide when your child has fully recovered and can go home. If required, the ECG department will perform the ECG and the results will be reported by a Consultant neonatal cardiologist.

Your child’s results

You will not get any results on the day. The results of the assessments will be looked at by the cochlear implant team and the findings explained to you at another appointment. Please contact the Emmeline Centre if you have any questions or concerns.

MyChart

We would encourage you to sign up for MyChart. This is the electronic patient portal at Cambridge University Hospitals that enables patients to securely access parts of their health record held within the hospital’s electronic patient record system (Epic). It is available via your home computer or mobile device

More information is available here on our website

Contact details

The Emmeline Centre for Hearing Implants
Box 163, Addenbrooke's NHS Trust, Hills Road, Cambridge, CB2 0QQ
Telephone: 01223 217589
Email: cuh.emmeline@nhs.net
Website

We are smoke-free

Smoking is not allowed anywhere on the hospital campus. For advice and support in quitting, contact your GP or the free NHS stop smoking helpline on 0800 169 0 169.