2-Audiometric Results

Question 1

What other possibilities must be ruled out before identifying SSNHL?

Answer 1

• vertebrobasilar insufficiency (stroke)
• infection
• labyrinthine membrane rupture (trauma/barotrauma)
• mass lesions (retrocochlear)
• autoimmune (systemic or inner ear specific)

Question 2

What 3 symptoms may be associated c/ SSNHL?

Answer 2

Tinnitus
Vertigo
Aural fullness

Question 3

What course of action should be taken if a patient presents c/ SSNHL (>30 dB interaural gap occurring within 3 days)?

Answer 3

Refer to emergency

Question 4

Name 5 symptoms associated with a perilymphatic fistula?

Answer 4

• pressure/sound induced (Fistula signs)
• hearing loss
• tinnitus
• aural fullness
• vertigo and disequilibrium
• cognitive disfunction

Question 5

What is a perilymphatic fistula?

Answer 5

An abnormal connection between the inner ear perilymph and middle ear space.

Question 6

How might a perilymphatic fistula occur?

Answer 6

Idiopathic
Congenital (TB infection)
Acquired (head trauma, stapedectomy, erosion (e.g cholesteatoma) of bony labyrinth, rapid shift in pressure)

Question 7

What does SSCD stand for?

Answer 7

Superior Semicircular Canal Dehiscence

Temporal bone is unusually thin or absent in that area forming a “3rd window”