Question 1
During neurodiagnostic auditory brainstem response testing, wave III is generated primarily by neural activity in which structure?
Show answer & explanation
Correct answer: D - The cochlear nucleus and trapezoid body
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The CCC-A exam has 120 questions and runs 2 hours.
These 10 free CCC-A questions are organized by exam domain, so you can see how each part of the Certificate of Clinical Competence in Audiology blueprint is tested. Reveal the answer and explanation under each question.
During neurodiagnostic auditory brainstem response testing, wave III is generated primarily by neural activity in which structure?
Correct answer: D - The cochlear nucleus and trapezoid body
An adult with normal hearing through 1000 Hz and thresholds of 65 dB HL at 4000 Hz and above reports, "I can hear that people are talking, but I cannot tell what they are saying." This complaint is BEST explained by reduced audibility of which speech elements?
Correct answer: A - Voiceless fricatives such as /s/ and /f/
An infant is being discharged following a 9-day stay in the neonatal intensive care unit. According to Joint Committee on Infant Hearing guidelines, which hearing screening method is required for this infant?
Correct answer: A - Automated auditory brainstem response
An adult reports episodes of vertigo triggered by loud sounds and by nose-blowing, and states that she can hear her own eye movements. Audiometry reveals a 25 dB air-bone gap at 250 and 500 Hz in the right ear. Tympanograms are Type A bilaterally, and both ipsilateral and contralateral acoustic reflexes are PRESENT in each ear. Which condition BEST accounts for these findings?
Correct answer: C - Superior semicircular canal dehiscence
Pure-tone thresholds are within normal limits bilaterally and tympanograms are Type A in both ears. Acoustic reflexes are absent for every condition in which the probe is placed in the left ear, and present at normal levels for every condition in which the probe is placed in the right ear. Which site of lesion BEST explains this pattern?
Correct answer: A - Left facial nerve proximal to the stapedial branch
At 1000 Hz, air-conduction thresholds are 45 dB HL in the right ear and 10 dB HL in the left ear. With the bone oscillator on the right mastoid, the unmasked bone-conduction threshold is 10 dB HL. Testing is performed with supra-aural earphones. Before the right ear can be interpreted as having a conductive component, the audiologist MUST:
Correct answer: D - mask the left ear while retesting right-ear bone conduction
A 4-month-old referred from newborn screening has robust distortion product otoacoustic emissions bilaterally. Click-evoked ABR shows no replicable waveform at maximum output, and an early response inverts when stimulus polarity is reversed. Acoustic reflexes are absent bilaterally. Which condition is MOST consistent with these findings?
Correct answer: D - Auditory neuropathy spectrum disorder
One week after a hearing aid fitting, a patient with normal low-frequency hearing reports that his own voice sounds hollow and boomy, although amplified speech from other people is clear and comfortable. Which modification is MOST likely to resolve this complaint?
Correct answer: B - Increase the diameter of the earmold vent
During real-ear measurement, the probe tube is advanced only to the entrance of the ear canal rather than to within approximately 5 mm of the tympanic membrane. What is the MOST likely consequence for the measurement?
Correct answer: B - High-frequency measurements will be inaccurate
A 20-month-old is diagnosed with a bilateral permanent hearing loss and is referred for early intervention. Under the Individuals with Disabilities Education Act, services for this child are provided under which authority and documented in which plan?
Correct answer: B - Part C, documented in an Individualized Family Service Plan (IFSP)
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