The test takes about 90 minutes. It is performed by an audiologist and interpreted by an ENT specialist. No preparation is necessary. Check with your health care provider if you are taking any medications. The physical and psychological preparation you can provide for this or any test or procedure depends on your child's age, interests, previous experience, and level of trust.
Some people find cold water in the ear uncomfortable.
Brief vertigo may occur during the test. Excessive water pressure can injure a previously damaged eardrum, but this rarely occurs. Caloric stimulation should not be performed if the eardrum is perforated because of the risk of causing ear infection . Electronystagmography is performed to evaluate the acoustic nerve, which provides hearing and helps with balance. This test may be recommended when the person is experiencing dizziness or vertigo, when there is impaired hearing, with suspected toxicity from certain antibiotics , and when psychologic causes of vertigo are suspected.