BRAINSTEM AUDITORY EVOKED RESPONSE (BAER) TESTING
BAER testing is a specialised non-invasive screening test to confirm hearing loss and is now available at Kudah.
The test is performed using a specialised computer that is connected to multiple electrodes placed in and around the ears and crown of the head. These electrodes measure the electrical activity of the brain in response to sounds administered into each ear.
The test can be performed on a conscious patient, however your pet must lie completely still. In most cases, sedation will be required to obtain a diagnostic reading (interference from movement and other stimulus can void the results (both false positive and negative results).
Test results will be one of the following:
Affected - bilateral: deaf in both ears
Affected - unilateral: deaf in one ear only
Unaffected - normal hearing in both ears
Below is an example of unilateral deafness at 60dB and medium sensitivity.
The left ear trace indicates deafness, the right ear trace indicates normal hearing.