exam 3 - hearing

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Anonymous
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76843
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exam 3 - hearing
Updated:
2011-04-02 20:59:34
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hearing
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  1. what is cerumen
    wax
  2. what does cerumen do
    protects and lubricates the ear canal

    along with hair follicles, help protect the eardrum and mid ear
  3. what's the best way to keep cerumen removable
    soap and water
  4. sound does not get from external to internal ear. type of hearing loss?
    conductive hearing loss
  5. what can cause conductive hearing loss?
    • 1. obstruction
    • 2. perforation
    • 3. scarring/tumors of mid ear
    • 4. inflammation
  6. will hearing aid help with conductive hearing loss?
    yes
  7. with conductive hearing loss, which frequencies are lost?
    all frequencies are lost
  8. will a hearing aid help with sensorineural hearing loss?
    no
  9. this type of hearing loss occurs when the inner ear or auditory nerve (cranial nerve VIII) is damaged
    sensorineural hearing loss
  10. what can cause sensorineural hearing loss?
    • 1. ototoxic drugs
    • 2. noise exposure (damage hair cells of cochlea)
  11. will hearing aids help with SENSORINEURAL HEARING LOSS?
    no

    *this type of hearing loss is often permanent
  12. this type of sensorineural hearing loss occurs as a result of aging
    presbycusis
  13. deficiencies in what vitamins or supplements appear to play a role in presbycusis?
    vit b12 and folic acid
  14. this hearing loss is caused by
    -breakdown or atrophy of the nerve cells in the cochlea,
    -loss of elasticity of the basilar membrane, or
    -decrease in blood supply to the inner ear
    -degeneration of hair cells of cochlea
    presbycusis
  15. will hearing aids help with presbycusis?
    yes
  16. what are the 3 features of meniere's disease
    • 1. tinnitus
    • 2. one sided sensorineural hearing loss
    • 3. vertigo (occurring in attacks that can last for days)
  17. what's the #1 NDx for Meniere's disease?
    risk for injury (r/t vertigo)
  18. what's the pathology of MENIERE'S DISEASE?
    excess of endolymphatic fluids IN OTHER WORDS.............

    *excess fluid volume in inner ears

    the problem with meniere's disease in fluid transport in ear
  19. what causes meniere's disease?
    unknown cause

    ** often occurs w/ infection, allergic rxns, fluid imbalances, LT stress
  20. risk factors for MENIERE'S DISEASE

    age?
    race?
    • 20-50 yrs old
    • white people
  21. MENIERE'S DISEASE: manifestations before an attack?
    • 1. ha
    • 2. increase tinnitus
    • 3. fullness in ear
    • 4. usually on sided manifestation
    • 5. vertigo
    • 6. n/v
    • 7. hypotension
    • 8. sweating
    • 9. nystagmus
  22. describe hearing loss with menieres. what frequencies are lost first?
    • 1. low frequency hearing loss occurs first
    • 2. worsens to include all levels after rptd episodes

    *early stages of menieres, hearing is normal/near normal

    *hearing loss may become permanent as attacks increase
  23. meniere's disease:

    nutrition therapy aims to do what?
    stabilize body fluid levels to prevent excess endolymph accumulation
  24. menieres:

    what kind of diet?
    • 1. distribute food and fluid intake evenly thruout day
    • 2. avoid high salt
    • 3. drink adequate amts of fluid (low sugar)
    • 4. limit etoh to 1glass/day
    • 5. avoid msg
  25. meniere's:

    drug therapy aims to do what?
    control vertigo and vomiting & restore normal balance
  26. meniere's:

    drug therapy.. what drugs?
    • 1. diuretics (decrease fluid volume)
    • 2. scopolamin patch (decrease N/V)
    • 3. CNS depressants (calm pt)
  27. meniere's:

    surgeries?
    • 1. relieve pressure
    • 2. shunts
    • 3. neurectomy
    • 4. labyrinthectomy

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