OTOSCLEROSIS , Meniere ... Superior SCC dehisence

Question 1

Which part of bony labyrinth in ear remains cartilaginous throughout life ?

Answer 1

FISTULA ANTE FENESTRUM

Question 2

OTOSCLEROSIS is

AUTOSOMAL DOMINANT / RECCESIVE ?

Answer 2

AD

Question 3

Pregnant women came with the complain of slow progressive hearing loss in both ears.

O/H —. She had measles during last flood in bihar.
Diagnosis ?

Answer 3

OTOSCLEROSIS

Question 4

Foll tests were done for OTOSCLEROSIS.
Define the results which led to diagnosis of disease.

TM examination
Rinne
Weber
ABC
Schwabach
Gelles
PTA 
Impedence audiometry

Answer 4

1. Flamingo pink (10%) , pearly white (90% cases)
2. Rennes - negative
3. Weber - lateralization to worst ear
4. ABC - normal
5. Schwabach - lengthened
6. Gelles - negative
7. PTA - dip at 2k
8. Impedence audiometry - As curve

Question 5

Mgt of OTOSCLEROSIS ?

Answer 5

Naf - active cases

Stapedectomy ( increase risk of fistula )

Stapedotomy ( better )