(44) Hearing Loss Flashcards Preview

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Flashcards in (44) Hearing Loss Deck (11):
1

defn of conductove hearing loss vs sensorineural

conductive = transmission of sound thru air is dec
sensorineura = damage to hair cells in organ of corti that prevent depolarization/signal to auditory n

2

etiology of Meniers disease

dec reabs of endolymph --> dialtion of labrynth

3

presentation of meniers disease

fluctuating sensorineural hearing loss, vertigo, and tinniitus

4

treatment fo meiner's

low Na diet; diuretics

5

webber test results in conductive vs sensorineural hearing lossq

conductive: localizes to affected ear
sensorinueral: localizes to unaffected ear

6

conductive or sensorineural:
all frequencies show elevated threshold on audiogram

conductive

= dec hearing lat all freq

7

what freq are lost in sensprineural hearing loss

high

8

what freq are lost in noise induced hearing loss

lower freq

9

bilatera hearing loss in 20s or 30s think

osteosclerosis

10

pathology of osteosclerosis

bone growth around otic capsule = fixation of stapes

11

tumor at cerebellar pontine angle is most likely 1 or 2 tumors that present there. what are the 2 types and what symptons distinguishes them. why?

vestibular schwannoma and meninigioma

vestibular schwannoma does NOT present with vertigo bc the tumor grows slowly enough that (compression of CN VIII) there is time for the brain to compensate