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ENT · Hearing rehabilitation: bone conduction device
Sample itemA 10-year-old has bilateral congenital aural atresia with normal cochlear function. Which device gives best rehabilitation before surgery?
Original practice item, not a recalled exam question. Nothing here is recorded.
The answer and the reasoning
A. Bone conduction hearing device on a softband
In canal atresia sound cannot reach the middle ear, so a bone conduction device that vibrates the skull and stimulates the healthy cochlea directly is used. A softband is used in young children until an implanted device is possible. Cochlear and brainstem implants are for sensorineural loss.
Option by option
A. Bone conduction hearing device on a softband (correct)
Correct. Bone conduction bypasses the atretic canal to reach a normal cochlea.
B. Cochlear implant
Cochlear implants are for profound sensorineural loss.
C. Conventional behind-the-ear air conduction aid
An air conduction aid needs a patent canal.
D. Auditory brainstem implant
Brainstem implants are for absent cochlear nerves.
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.
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