Frequently Asked Questions

Click on a question below to view the answers.

How do I clean my OAE probe?

A step-by-step guide for cleaning the probe:


  1. Remove the probe by squeezing and applying inward pressure while turning counter clockwise.
  2. Turn approximately 15mm. Lift off the probe tip.
  3. Thread the stiff end of the cleaning brush into the tubes (the small floss for the smaller tubes and the large floss for the larger tubes).
  4. Pull each cleaning floss completely through the probe tube, cleaning all three tubes and discarding each brush after use.
  5. Before reattaching the probe tip, verify that the gasket is positioned over the three holes in the probe. The gasket must not block the three holes.
  6. Reattach by realigning the three tabs on the probe tip with the notches in the probe body.
  7. Squeeze, apply inward pressure, and turn the probe tip clockwise until the white lines match. The probe tip must fit tightly and not feel loose or wobbly.
Can I test for ototoxicity with an audiometer?

Ototoxicity can be tested with a diagnostic audiometer that has high frequency capabilities. Ototoxic drugs affect the very high frequencies first, and it is therefore recommended that regular high frequency testing be done, up to 20 000Hz.

Why should I verify hearing aid fittings?

The only way you can confirm that the hearing aid settings are correct, is to verify using a real ear measurement instrument. An REM system measures the amplification at the eardrum – in other words, gives true performance readings. Verification also means increased patient satisfaction, resulting in less follow-up fittings.

Why should ABR & ASSR tests be done together

ABR testing needs to be done to verify the neural pathway. According to literature, the more normal the hearing, the less accurate the thresholds determined by ASSR testing. Middle ear pathology also influences ASSR testing. It is therefore crucial that ASSR is done as part of a test battery.

When do you perform an ECochG test?

ECochG is a variant of an Advanced Evoked Potential test. It is a method for recording the electrical potentials of the cochlea in response to auditory stimuli. Reasons for performing an ECochG include:

  • Meniere’s Disease
  • Endolymphatic Hydrops
  • Perilymph Fistula
  • Enhancement of Wave I of the ABR in the presence of hearing loss.
What is an EABR?

An EABR is an Electrical Auditory Brainstem Response test. It is a measurement of the ABR using an electrical stimulus via the cochlear implant. It can be used to determine device integrity and measure synchronicity of the auditory system.