Card Set Information
Type and degree of HL for outer ear disorders
What disorders are low set ear associated with
What is Lop Ear
-Varying degree of HL
What is otoplasty
plastic surgery to improve the appearance of external ear
-Abscence of pinna, tragus and auditory canal
-Deformities of ME and TM
-Congenital, burns, trauma
-External ear canal not formed
-Common in Syndromes (Treacher Collins)
-More common in males
-ME bone abnormalities, IE OK
-Can occur with micotia
What is the treatment for atresia
Bony plate seperating external canal and middle ear must be drilled out.
-Narrowing of ear canal
-No HL, easily clogged by wax
What is treatment for stenosis?
Canalplasty (widen the ear canal)
-Can cause HL if blocking ear canal
-Water with bacteria fungus trapped in canal
: drainage, itchy, sensitive to touch, feels blocked
Collapsing ear canal
-Narrowing of the external canal that occurs with pressure compresses the pinna against the side of the head.
-Does not need medical intervention
-1/3 of people 65+ have this
-Commin in really large ears
What type of HL and tympannogram does excessive ear wax cause?
-Type A if canal is not completely blocked, Type B if canal is completely blocked
What is the average AC shift for OE disorders?
What is the speech discrim for OE disorders?
What type of
would you see with an OE disorder?
What are the most common tumors for OE disorder?
What can cause a perforation?
-Exessive pressure build-up during ME disorder
-Trauma from pointed objects
surgical repair of TM
1. Type of HL with Perf?
2. OAE results
3. type b (large volume)
What is the most common cause of HL in children under 3?
Acute Otitis Media
Fluid in ME with signs of infection (bulging TM, drainage, pain, perf)
Otitis Media with effusion
Fluid in ME without signs of infection
invasion of fluid in mastoid bone during otitis media
What are the symptoms of otitis media with effusion?
fever, ear pain, HL, irritability, pulling on ear, poor sleep, drainage
What are the risk factors of otitis media with effusion
Cleft pallate, second hand smoke, formula vs breast milk, upper respiratory infections, day care, ethnic groups
Otitis Media with Effusion
1. Type and Degree HL
4. I-V ABR
5. V latency
1. Mild to Moderate, normal BC abnormal AC
2. Type B
5. May be delayed
What is Politzerization?
Blowing air into nostril with syringe, blocking other and swallowing which forces air into TM and ME and causes it to pop.
Plugging nose and blowing air into ears (should not be done if there is nasal discharge)
Non malignant tumor in ME space. Skin has entered ME space. Small sac-like tumors made of proteins, fats, and tissues. As it grows, damage ME bones
Perf- skin enters ME
Retraction of TM
Symptoms of Cholesteotoma
HL, drainage with foul odor, ear pressure, dizziness, facial weakness
What happens if cholesteatoma goes untreated?
Spreads to the IE or the brain
What the the audiometric results with cholesteatoma (type, degree HL, tympanogram, reflexes, OAE, I-V ABR, Wave V latency)
Mild- Moderately Severe CHL
Reflexes and OAE absent
I-V normal and wave V latency delayed
Mastoidectomy, keep ear dry, take antibiotics
What is Bell's Plasy
Damage to facial nerve causing unilateral facial paralysis
Possible etiologies of Bell's Palsy
Viral/Bacterial infections, tumor, swelling, injury
Symptoms of Bell's Palsy
-Twitching, weakness or numbness on one side of the face
-Not a disease and rarely causes HL alone
-Changes in taste
What is the intervention for Bell's Palsy
Steroids, Eye patch at night to keep eye from drying out, surgical intervention for facial paralysis
What is Otosclerosis?
Abnormal bone growth in ME around footplate of stapes, which prevents the ossicular chain from moving properly (footplate of stapes becomes "fixed" at oval window)
Progressive, genetic, more common in females
What are the symptoms of otosclerosis?
Gradual HL, Tinnitus, dizziness, paracus willisi
Medical intervention for Otosclerosis
Sodium flouride treatment
BAHA implanted device
Auiometric Results with otosclerosis
Mild-moderattely severe CHL
Type B tympanogram
Reflexes and OAE absent
I-V normal, Wave V delayed
What are the 3 most common causes of SNHL
Noise, Presbycusis, Menieres Diseasse
Where is the site of noise induced HL
Basal end Outer Hair Cells
Audiometric Results for noise induced hearing loss
: variable depending on degree of HL (Absent in severe/profound HL ..elevated in moderate HL)
-Maximal HL between 3000-6000 Hz – “Noise Notch”
Symptoms of noise induced hearing loss
tinnitus, difficulty understanding in noise, difficulty understanding speech
What noise is loud enough to cause a noise induced HL?
Highest sound level over a period of time
max sound level
average sound over a peroid of time
average sound level
a percentage of the daily maximum permissible exposure
What is Presbycusis?
SNHL associated with aging (damage to cochlea hair cells)
Loss of IHC and OHC SNHL in high range
Loss of 50% of chochlear neurons, poorer than expected Word recognition
atrophy of stria vascularis, affects production of endolymph
Autoimmune inner ear disease
inflammatory condition of the inner ear.
Sudden attacks of vertigo, tinnitus, vommiting, and unilateral SNHL (overproductoin of endolymph)
Treatment for Meieres
Limit fluid retention, improve blood flow,
What are the audiometric results for Menieres?
: variable depends on degree of HL OAE’s absent
: I-V normal ; wave V correlated with degree of HL
What is Acoustic Neuroma?
CANS disorder, slow growing benign tumor.
What sizes are small medium and large acoustic neuroma
Small- less than 1.5 cm
Medium- 1.5-2.5 cm
Large- 2.5 cm
Acoustic Neuroma Symptoms
Progressive unilateral SNHL
Tinnitus, dizziness, pressure in ear,
Treatment for Acoustic Neuroma
Normal Hair Cell function, abnormal neural function
Auditory Neuropathy adometric results