331 14 Conductive Hearing Losses

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Author:
shanamd2011
ID:
145862
Filename:
331 14 Conductive Hearing Losses
Updated:
2012-04-05 12:00:46
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conductive hearing losses
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conductive hearing losses
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  1. characteristics of conductive hearing losses 7
    • no tolerace problems
    • no word recognition difficulties
    • paracusis willsii
    • low frequency tinnitus
    • generally all frequencies affected
    • autophony
    • muffles sounds
  2. outer ear conditions 4
    • blockage
    • congenital atresia
    • otitis externa
    • exostosis
  3. paracusis willsii
    hear better in noise because everyone around them is yelling over the noise
  4. low frequency tinnitus
    hearing very low sounds such as heart beat, fluttering, etc
  5. autophony
    hearing yourself too loud
  6. blockage
    • no big deal
    • caused by wax
  7. congenital atresia
    • birth defect
    • no ear canal
  8. otitis externa
    • external inflamation
    • fungus infection
    • exactly like athletes foot
    • NOT swimmers ear
  9. exostosis
    • swimmer/surfer's ear
    • caused by swimming in cold salt water
    • no real problem
    • no real treatment
  10. microtia
    deformed pinna / no pinna
  11. macrotia
    pinnas are too large
  12. treatments for outer ear disorders 4
    • remove blockage (cerumin) - look at state laws
    • surgery for atresia - AuD do not perform
    • medicines for infections
    • exotosis are generally left alone
  13. common middle ear disorders
    • cancer of the middle ear
    • glomus tumor
    • myringitis bullosa
    • pagets disease
    • Van der Hoeve's Syndrome
    • Trauma
  14. cancer of the middle ear 4
    • happens a lot in diabetics
    • looks like otitis media but does not go away
    • is treatable
    • runs the risk of becoming cancer in the bone then the brain
  15. glomus tumor 4
    • first sign is hearing the heart beat constantly
    • hits the ossicular chain or tympanic membrane
    • can be medically treated
    • sunrise tympanogram
  16. As
    Ad
    Au
    • left ear
    • right ear
    • both ears
  17. myringitis bullosa 3
    • viral infection of the Tympanic Membrane
    • inflammation of ear drum
    • herpies infection
  18. paget's disease
    • disease of the elderly
    • genetic, congenital
    • major bones of body swell and twist
    • Beethoven
  19. Van der Hoeve's syndrome 3
    • osteogensis imperfecta
    • brittle bone disease
    • genetic
  20. trauma 4
    • most common problem especially for our age group
    • common until 24
    • any blow to te head can create a hearing loss
    • if they dont lose consciousness then they probabky did not get a hearing loss from trauma
  21. define tympanoplasty
    reconstructive surgery of the middle ear
  22. 4 types of tympanoplasty
    • 1 - patch a hole in tympanic membrane
    • 2 - connect TM to Incus (because malleus is missing)
    • 3 - connect TM to Head of stapes (malleus and incus missing)
    • 4 - connect TM directly to oval window (fenestration)
  23. otosclerosis 4
    • genetic disease
    • 2:1 female : male
    • typically white women from 15-45 (child bearing years)
    • pregnancy does not cause but can lead to expression of the gene
  24. otosclerosis problem?
    bone grows around the oval window or round window creating a hearing loss
  25. otosclerosis looks
    rose colored = beautiful
  26. treeatment of otosclerosis
    • medical - sodium flouride (not proven to work)
    • surgical -
    • fenestration - no
    • stapes mobilization - temporary
    • stapedectomy / stapedotomy - yes
  27. steps in stapedotomy
    • measure stapes height
    • drill hole in bottom
    • cut crewa
    • cut stapes tendent
    • break stapes out
    • put in fake stapes (made of teflon cause bone cannot stick to it)
  28. stapedotomy chance of cure
    • 99%
    • if it stops working, it can be done again or you can have hearing aids
  29. stapes mobilization
    removes bone around stapes which fixes it for about a year until the bone grows back
  30. fenestration 4
    • completely reconstructing the ear
    • only 50% chance of improvement
    • makes patient dizzy for awhile
    • problem when doing middle ear molding

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