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25 Cards in this Set
- Front
- Back
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Define acute ottis media.
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short-term causes fever, discomfort, usually go away with medication
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Define chronic ottis media.
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repeating long-term, medication
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What type of tympanometry is associated with ottis media?
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Type B, low compliance
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What is Mastoiditis?
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Infection that spread into the bone behind the ear
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What is Otosclerosis?
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the bone of th stapes becomes spongy, then hardens as a result the stapes footplate can no longer move into the oval windon
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What type of hearing loss is otosclerosis and what frequence does the loss occur?
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conductive hearing loss in the low frequencies 250-1000 Hz
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What is Cholesteatoma?
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begnin fatty tumor in the middle ear
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What are the symptoms of cholesteatoma?
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hearing loss, discharge of pus from ear, unpleasant smell, often accompanies tympanic membrane perforation
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What is microtia?
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small pinna
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What is stenosis?
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very small ear canal
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What is atresia?
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plug of tissue is between the ear canal and middle ear
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Describe the audiological features of atresia.
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conductive hearing loss, maximum air bone gap 60 dB, tympanogram is rarely measurable
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What artifacts can impact the measurement of ear canal volume.
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probe clogged with cerumen, probe against canal wall
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Describe the hearing loss, tympanogram, and ear canal volume associated with impacted cercum according to audiological measurements.
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mild to moderate conductive loss, Type B with low ear canal volume
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What is a furncle?
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it a boil that forms around the hair follicle in the ear canal
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How is furuncle treated?
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antibiotics
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How is a sensorineural loss is characterized?
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Air bone gap = O dB, AC = BC, Tympanogram is normal
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What cause hair cells damage?
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noise exposure, ototoxic drugs, certain viruses and bacteria
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Describe the audiogram of noise-induced hearing loss?
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peak loss at 4 kHz
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How to prevent noise-induce hearing loss?
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foam ear plugs, reusable ear plugs, ear muffs
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What are the primary sites of damage in sensorineural hearing loss?
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Innter hair cell, outer hair cells, spiral ganglion/nerve fibers, stria vascularis
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What is the function of inner hair cells?
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change sound information into neural information
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What is the function of outer hair cells?
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help amplify sound in the cochlear, their movement changes the way the basilar membrance moves so that threshold is low
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What was the early term for noise-induced hearing loss?
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boilermaker's ear
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What aretwo ototoxic drugs that cause permanent hearing loss?
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Aminoglycoside antibiotics, platinum compounds
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