331 9.1 Intro Hearing Testing

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Author:
shanamd2010
ID:
138090
Filename:
331 9.1 Intro Hearing Testing
Updated:
2012-02-27 13:28:15
Tags:
hearing testing
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Description:
hearing testing
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  1. objectives to hearing testing
    • assist in medical diagnosis
    • assist in aural rehabilitation - real job
    • screening a population
    • monitor
  2. screening a population is used to
    identify people at risk for hearing loss so they can have further testing done
  3. monitor is used to
    • monitor the employees of large companies like Ford's to keep the workers from becoming communicationally challenged \
    • their hearing will be hurt but should not be destroyed
  4. standard classification of hearing loss
    • conductive - sound not getting there
    • sensory (sensory transduction) & neural (CN VIII) = sensorineural
    • central (cochlear and beyond, center of ear)
  5. other classification terms
    • peripheral - vestibular balance
    • retrocochlear - "retro" - after cochlea, CN and up to brain
  6. 'retro' jargon
    • an VIII nerve problem / tumor
    • can cause death
    • physician does an MRI
  7. early testing procedures
    • watch tick
    • coin click
    • conversational voice
    • whisper test
  8. coin click test
    • drop a coin on the table and ask how it sounds
    • metalic means that they can hear high frequencies
    • low thud means they can hear low frequencies
  9. conversation voice
    • very dumb
    • like testing vision (use 20/20)
    • created by the government
  10. whisper test
    • still crappy
    • change from the conversational voice test
  11. tuning fork tests...
    qualify or tell us the kind of hearing loss but do not quantify or tell us how much hearing is lost
  12. tuning forks play the note
    • C above middle C
    • 1,000 Hz
  13. types of tuning fork tests
    • Rinne
    • Weber
    • Bing
    • The Weber-Bing Procedure
  14. Rinne test
    • unilateral
    • hit fork, when sound disappears put it on masta - does is reappear?
    • if they dont hear it longer away from head, they have sensorineural loss
    • if they hear it longer on masta, they have conductive loss
  15. Weber test
    • unilateral
    • used for SSD
    • hit fork, put on forehead
    • if they hear it in the good ear, they have sensorineural loss in the bad ear
    • if they hear it in the bad ear, they have conductive loss in the bad ear

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