Audiologic Assessment & Diagnosis Flashcards
7 cards from real ABA practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Audiologic Assessment & Diagnosis flashcards as text
Which finding on ABR testing is most consistent with auditory neuropathy spectrum disorder (ANSD)?
Answer: Absent or severely abnormal ABR with present cochlear microphonic and/or OAEs
ANSD is characterized by absent or grossly abnormal ABR despite present OAEs or cochlear microphonic, indicating outer hair cell function with neural dyssynchrony.
Interaural attenuation for insert earphones is approximately:
Answer: 70 dB
Insert earphones provide approximately 70 dB or more of interaural attenuation, compared to ~40 dB for supra-aural earphones.
The HINT (Hearing in Noise Test) measures:
Answer: Speech reception thresholds in quiet and noise
The HINT measures SRT in quiet and with noise from three directions, providing a composite RTS score useful for hearing aid and cochlear implant outcome assessment.
A notch at 4000 Hz on a pure-tone audiogram that improves at 8000 Hz is the classic signature of:
Answer: Noise-induced hearing loss
Noise-induced hearing loss characteristically produces a notch at 3000-6000 Hz (most prominently at 4000 Hz) with partial recovery at 8000 Hz.
During acoustic reflex testing, contralateral reflexes are absent while ipsilateral reflexes are present bilaterally. This pattern is most consistent with a lesion in the:
Answer: Brainstem (crossing fibers)
Absent contralateral reflexes with present ipsilateral reflexes indicates disruption of the crossing brainstem pathway used in the contralateral reflex arc.
Which speech audiometry measure is most sensitive to cochlear dead regions?
Answer: Threshold equalizing noise (TEN) test
The TEN test specifically identifies cochlear dead regions by presenting tones in threshold-equalizing noise; masked thresholds elevated >10 dB HL above TEN level indicate a dead region.
When performing bone conduction testing, the unmasked bone conduction threshold primarily reflects the hearing of:
Answer: The better cochlea regardless of oscillator placement
Because bone conduction crosses the skull with minimal attenuation (~0-10 dB), unmasked BC thresholds reflect the better-hearing cochlea regardless of where the oscillator is placed.