DIAGNOSTIC TESTS

This area provides information about the diagnostic tests carried out in some Audiology Centres or Hearing, balance and tinnitus clinics. For more information about the tests click here

Why do you need tests?

   · To assess your balance and hearing
   · To establish the possible causes of the problems you are experiencing.

What are the tests?

1. Balance tests
    a. Electronystagmography (ENG)
    b. Caloric test
    c. Equitest

2. Hearing tests
    a. Pure tone audiometry (PTA)
    b. Tympanogram
    c. Auditory Brainstem Response (ABR)

Most patients have all these, but some have only a few.

PREPARATION FOR THE TESTS

1. Transport
We recommend that you bring a friend or relative with you if you have balance problems. If you are driving and coming on your own, wait at least one hour after the test before you leave the hospital. You may feel dizzy after the tests.

2. Substances to avoid
(they can affect test results)
   · Do not have alcohol or sleeping tablets the night before the test
   · Stop anti-dizziness medications at least 48 hours before the test
 
  · Do not stop other medications unless advised to do so by the doctor. If you are worried about       stopping medications please contact your GP
 
  · Do not put on make-up on the day of the test, as recording leads (small discs) are stuck on your      forehead and on either side of your eyes, to record eye movement.

3. Drinks and meals
Have a light meal and drink normally before you come.

When will I know the test results?
The doctor will explain the results to you if all the tests are completed on the same day as you see her/ him. If the tests are carried out on a different day, the audiologist will report the results to the doctor, who will discuss them with you at your next clinic visit.


Please note: as conditions vary in different hospitals, there may be some variability in the tests you need to do. However, if you need to have all or most of these tests, you should expect your appointment to last the whole morning or afternoon.

For more information about the tests click here

The Balance Interest Group would like to thank Dr R Palaniappan for allowing us to adapt his booklet.

© 2003 Balance Interest Group