331 14 Conductive Hearing Losses

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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
outer ear conditions 4
- blockage
- congenital atresia
- otitis externa
- exostosis
paracusis willsii

hear better in noise because everyone around them is yelling over the noise
low frequency tinnitus

hearing very low sounds such as heart beat, fluttering, etc
autophony

hearing yourself too loud
blockage
- no big deal
- caused by wax
congenital atresia
- birth defect
- no ear canal
otitis externa
- external inflamation
- fungus infection
- exactly like athletes foot
- NOT swimmers ear
exostosis
- swimmer/surfer's ear
- caused by swimming in cold salt water
- no real problem
- no real treatment
microtia

deformed pinna / no pinna
macrotia

pinnas are too large
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
common middle ear disorders
- cancer of the middle ear
- glomus tumor
- myringitis bullosa
- pagets disease
- Van der Hoeve's Syndrome
- Trauma
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
glomus tumor 4
- first sign is hearing the heart beat constantly
- hits the ossicular chain or tympanic membrane
- can be medically treated
- sunrise tympanogram
As
Ad
Au
- left ear
- right ear
- both ears
myringitis bullosa 3
- viral infection of the Tympanic Membrane
- inflammation of ear drum
- herpies infection
paget's disease
- disease of the elderly
- genetic, congenital
- major bones of body swell and twist
- Beethoven
Van der Hoeve's syndrome 3
- osteogensis imperfecta
- brittle bone disease
- genetic
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
define tympanoplasty

reconstructive surgery of the middle ear
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)
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
otosclerosis problem?

bone grows around the oval window or round window creating a hearing loss
otosclerosis looks

rose colored = beautiful
treeatment of otosclerosis
- medical - sodium flouride (not proven to work)
- surgical -
- fenestration - no
- stapes mobilization - temporary
- stapedectomy / stapedotomy - yes
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)
stapedotomy chance of cure
- 99%
- if it stops working, it can be done again or you can have hearing aids
stapes mobilization

removes bone around stapes which fixes it for about a year until the bone grows back
fenestration 4
- completely reconstructing the ear
- only 50% chance of improvement
- makes patient dizzy for awhile
- problem when doing middle ear molding

Author

shanamd2011

145862

Card Set

331 14 Conductive Hearing Losses

Description

conductive hearing losses

Updated

2012-04-05T16:00:46Z

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