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Physiology of hearing and hearing loss

Question
21 out of 39
 

Which of the following conditions causes maximum hearing loss? (AIIMS Nov 2012)

A.



A Ossicular disruption with intact tympanic membrane

B.

B Disruption of malleus and incus with intact tympanic membrane

C Partial fixation of the stapes footplate

D Ottitis media with effusion

Ans. A Ossicular disruption with intact tympanic membrane

Average hearing loss seen in different lesions of conductive apparatus:

Condition

Average 7hearing loss

Closure of oval window

Ossicular inerruption with intactTM

Ossicular interruption with perforation

Complete obstruction of ear canal

TM perforation

60dB

54dB

38dB

30 dB

10-40 dB

Physiology of hearing and hearing loss Flashcard List

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