In noise induced hearing loss , audiogram shows a Boiler’s notch at ?
Correct Answer: 4000 Hz
Description: Noise induced hearing loss Boiler notch at 4000 HZ Max seen at 3000 - 6000 HZ Sterocilia of outer hair cells are 1st to be affected . Carha's notch - dip is present at 2000 HZ .(seen in otosclerosis)
Category:
ENT
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