Cochlear Implant Basics & Referral Flashcards
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Which part of the cochlear implant system is worn externally behind the ear?
Answer: Sound processor
The sound processor is the external component worn behind or off the ear that captures and processes sound.
A patient with a cochlear implant reports that their device stopped working after swimming. What is the most likely cause?
Answer: Moisture damage to the external processor
The external sound processor is susceptible to moisture damage and must be protected or removed before water exposure.
What audiological criterion is most commonly used to determine cochlear implant candidacy in adults?
Answer: Speech recognition scores ≤50% in the best-aided condition
Adults typically qualify for cochlear implants when aided speech recognition scores are 50% or below on sentence-level tests.
Which imaging study is routinely ordered pre-cochlear implant to assess cochlear anatomy and patency?
Answer: Magnetic resonance imaging (MRI) or high-resolution CT
MRI and/or high-resolution CT of the temporal bone evaluate cochlear anatomy, nerve integrity, and potential ossification.
When an audiologist suspects a patient may benefit from a cochlear implant, the most appropriate next step is to:
Answer: Refer to a cochlear implant center for a comprehensive evaluation
Referral to a cochlear implant center allows a multidisciplinary team to conduct comprehensive medical, audiological, and counseling evaluations.
Which finding would make a patient a POOR candidate for cochlear implantation?
Answer: Absent cochlear nerve on MRI
An absent or severely hypoplastic cochlear nerve precludes adequate stimulation of auditory fibers, making implantation unlikely to provide benefit.
What is the primary purpose of the cochlear implant's internal receiver-stimulator?
Answer: To convert transmitted signals into electrical pulses sent to the electrode array
The receiver-stimulator receives the coded signal transcutaneously and converts it into electrical pulses delivered via the electrode array.
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- ihsinfo.org — Test delivery, eligibility, fees, retake policy, exam format, passing score, score validity, time limit · verified Oct 2026