Otosclerosis Flashcards
1
Q
What is otosclerosis?
A
The replacement of normal bone by vascular spongy bone.
2
Q
What kind of deafness does it cause?
A
Conductive deafness (progressive)
The stapes becaomes fixed at the oval window.
3
Q
In what way is it inherited?
A
Autosomal dominant
4
Q
At what age is the onset of otosclerosis?
A
20-40 years
5
Q
What are some features of otosclerosis?
A
- Conductive deafness
- Tinnitus
- Normal tympanic membrane
- Positive family history
6
Q
How is it managed?
A
Hearing aids or Stapedectomy
7
Q
10% will have a funny coloured tympanic membrane. What colour is it descrbed as and why do they get it?
A
Flamingo tinged tympanic membrane due to hyperaemia.
(Increased blood flow to the TM)
