sensorineural hearing loss Flashcards
1
Q
what is sensorineural hearing loss
A
deafness due to failure of the hair cells to detect sound in the inner ear
2
Q
name 7 causes of sensorineural hearing loss
A
- presbycusis
- noise induced
- Meniere’s disease
- vestibular schwannoma
- drug side effects gentamicin, loop diuretics, chemotherapy, hydroxychloroquine)
- idiopathic (most common)
- following meningitis
3
Q
what is presbycusis
A
age related hearing loss
4
Q
presbycusis presentation
A
- gradual hearing loss as patient ages
- difficulties in hearing with background noise
5
Q
presbycusis diagnosis
A
- Rinnes: positives
- Webbers: localises to opposite ear
- audiometry: no air bone gap, bilateral high frequency hearing loss
6
Q
presbycusis management
A
hearing aids
7
Q
what is a vestibular schwannoma
A
- benign nerve sheath tumour of CN8 that grows at the cerebellar pontine angle
- also known as acoustic neuroma
8
Q
vestibular schwannoma that is bilateral =
A
neurofibromatosis type 2
9
Q
vestibuar schwannoma presentation
A
- sensorineural hearing loss with distortion of sound and tinnitus
- unsteadiness, vertigo and deep earache
- facial pain, palsy or paraesthesia
- unilateral headache
10
Q
vestibular schwannoma diagnosis
A
- Rinnes: positives
- Webbers: localises to opposite ear
- audiometry: no air bone gap
- MRI (gold standard)
- CT head
11
Q
vestibular schwannoma management
A
- watchful waiting
- surgical excision
