Characteristic feature of Qtosclerosis are ilil except: [AIIMS Nov 2012]
|B||Positive Rinne's test|
|D||Mobile ear drum|
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
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.