HAC Cochlear Implant Basics & Referral 2

Question 1

Which part of the cochlear implant system is worn externally behind the ear?

Accepted Answer

Sound processor

Answer

The sound processor is the external component worn behind or off the ear that captures and processes sound.

Question 2

A patient with a cochlear implant reports that their device stopped working after swimming. What is the most likely cause?

Accepted Answer

Moisture damage to the external processor

Answer

The external sound processor is susceptible to moisture damage and must be protected or removed before water exposure.

Question 3

What audiological criterion is most commonly used to determine cochlear implant candidacy in adults?

Accepted Answer

Speech recognition scores ≤50% in the best-aided condition

Answer

Adults typically qualify for cochlear implants when aided speech recognition scores are 50% or below on sentence-level tests.

Question 4

Which imaging study is routinely ordered pre-cochlear implant to assess cochlear anatomy and patency?

Accepted Answer

Magnetic resonance imaging (MRI) or high-resolution CT

Answer

MRI and/or high-resolution CT of the temporal bone evaluate cochlear anatomy, nerve integrity, and potential ossification.

Question 5

When an audiologist suspects a patient may benefit from a cochlear implant, the most appropriate next step is to:

Accepted Answer

Refer to a cochlear implant center for a comprehensive evaluation

Answer

Referral to a cochlear implant center allows a multidisciplinary team to conduct comprehensive medical, audiological, and counseling evaluations.

(HAC) Hearing Aid Certification Practice Test