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19 Cards in this Set
- Front
- Back
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Sound transmission until the:
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stapes
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site where mechanical movement is transformed to neural impulse
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cochlea
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Organization of cochlea
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low freq is proximal
high frequency is distal tonotopic |
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Rinne Test
1) which fork? 2) Descibe test? |
1) 512 Hz
2) Place fork on mastoid as compared to outside ear in the air. If bone is better than air, then there is a conductive hearing loss. |
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Weber test- fork on the forehead
1) which fork? 2) sound reffered to bad ear indicates? 3) sound reffered to good ear indicated? |
1) 512 Hz
2) bad ear- CONDUCTIVE 2) Good ear- SENSORINEURAL |
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Audiogram defines:
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pt. threshold for hearing a different dB and frequency
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What causes conductive loss?
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Mechanical problem (i.e. wax)
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Audogram- air and bone conduction are effected equally on one side
dx? |
sensorineural loss
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What do we treat sensorineural hearing loss with most commonly?
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Hearing aid
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Typical complaint of sensorinerual hearing loss?
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everyone is mumbling
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wax will give you what threshold?
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30dB
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What do we do for progressive unilateral hearing loss?
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IMAGE!!! This is tumor until proven otherwise
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Slow onset unilateral conductive hearing loss with no other findings.
1) Dx? 2) Tx? |
1)Otosclerosis
2)Surgery-stapedectomy |
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cause of otosclerosis?
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fixation of stapes
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What is a common hereditary hearing loss?
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otosclerosis
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Causes of Total profound hearing loss:
1) three acquired |
1) viral, meningitis, ototoic
2) Syndromic, genetic (connexins) |
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Two options in profound hearing loss
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1) sign language
2) cochlear implantation |
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Unique characteristic of cochlea
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Cochlea is fully developed and calcified at birth. Does not grow.
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Pt has excellent pure tone test, but cannot discriminate words?
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receptive aphasia
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