Disorders IE

Question 0

Presbycusis audiogram results

Answer 0

Bilateral symmetrical SNHL
Progressive - affects high freq first (sloping config) then low
Common complaint - cant understand speech in noises areas

Question 1

Presbycusis

Answer 1

HL due to aging

Sensory, mechanical, metabolic and central aspects of sensorineural mech are effected

Question 2

NIHL

Answer 2

HL associated with long term repeated exposure to noise. Occupational or recreational. OR acoustic trauma - quick high intensity sound

Question 3

NIHL - types

Answer 3

1. Temporary t/hold shift (TTS). Exposure is > 80 dBSPl
   Typically recover over time
2. Perm t/hold shift (PTS) perm HL (lasts several weeks)

Question 4

NIHL - areas of damage due to type of noise

Answer 4

• short duration at high intensity = phys and mech damage
• long gyration at moderate intensity = metabolic problems (dec in oxygen to hair cells -> lead to damage of outer than inner hair cells)

Question 5

Ménière’s disease

Answer 5

High pressure caused by excess endolymph within labyrinth

More common in adults

Question 6

MD 4 episodic symptoms

Answer 6

1. Aural fullness/pressure
2. Tinnitus - low frequency roar
3. Fluctuating HL - rising config to flat. Distortion if signal.
4. Vertigo - whirl around sometimes nausea

Question 7

Ototoxicity

Answer 7

Chemical damage to cochlea and or vestibule

Question 8

Head trauma

Answer 8

Hcan cause cochlear hL depending of severity of trauma.

Question 9

Sudden idiopathic sensorineural HL

Answer 9

HL that comes on suddenly (immediately or over a couple of days).