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Otosclerosis

Question
20 out of 28
 

Characteristic feature of Qtosclerosis are ilil except: [AIIMS Nov 2012]



A Conductive deafness

B Positive Rinne's test

C Paracusis willisi

D Mobile ear drum

Ans. B Positive rinne's test

Otosclerosis causes conductive deafness. ( option a is correct)

Tuning Fork Tests in Otosclerosis

Rinne: test - negative (. option b is incorrect)

Webers test - lateralised to ear with greater conductive loss

a. Absolute bone conduction - normal (It is decreased in cochlear otosclerosis)

b. Pure tone audiometry - shows loss of air conduction more for lower frequency.

- Bone conduction is normal. In some cases there is a dip in bone conduction maximum at 2000 Hz (calleD.as Caharts notch)

c. Acoustic reflex - shows a biphasic peak or it is absent

d. Speech audiometry - Normal discrimination score

e. Impedance audiometry - As type of curve

Also Remember:

a. Tympanic membrane is normal and mobile in 90% cases. (. option d is correct).

b. Schwartz sign - Flammingo cases pink colour of tympanic membrane is seen in 10% cases. It indicates active

c. focus with increased vascularity.

d. Stapes footplate - Shows a rice grain / biscuit type appearance

e. Blue mantles are seen histopathologically.

Otosclerosis Flashcard List

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