Try it
ENT · Ear and audiology: neural presbycusis
Sample itemA 78-year-old says he hears people speaking but cannot understand them. Pure tone audiometry shows only a mild sloping high-frequency loss, but speech discrimination is far worse than expected. Which type of presbycusis is this?
Original practice item, not a recalled exam question. Nothing here is recorded.
The answer and the reasoning
A. Neural presbycusis
Neural presbycusis results from loss of spiral ganglion neurons and auditory pathway cells, so discrimination is out of proportion to the pure tone loss. Strial presbycusis gives a flat audiogram with good discrimination. Sensory presbycusis gives a steep high-frequency drop with preserved discrimination.
Option by option
A. Neural presbycusis (correct)
Correct. Discrimination far worse than the pure tone loss indicates neural presbycusis.
B. Cochlear conductive presbycusis
Cochlear conductive presbycusis is a stiff basilar membrane with a straight descending audiogram and fair discrimination.
C. Sensory presbycusis
Sensory presbycusis gives an abrupt high-frequency fall with discrimination preserved until late.
D. Strial presbycusis
Strial atrophy gives a flat audiogram with good speech discrimination.
Source note: Original NextPrep sample item — pending expert review. This item is original practice material awaiting independent expert review, so confirm important facts in a standard textbook.
More ENT questions
- AudiologyIn a tuning fork test, Rinne is negative (bone conduction louder than air conduction) in…
- EarWhich type of chronic suppurative otitis media is considered 'unsafe'?
- LarynxIn singers, vocal nodules typically occur at:
- Vestibular disordersA patient has recurrent attacks of vertigo lasting hours, with fluctuating low-frequency…