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25 Cards in this Set
- Front
- Back
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During which war did the field of Audiology emerge?
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WWII
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What 2 parts comprise the outer ear?
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Auricle/pinna and external auditory canal/external auditory meatus
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Name the 3 small bones within the middle ear.
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malleus, incus, and stapes
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What is the purpose of the eustachian tube?
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To equalize air pressure within and outside the middle ear.
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What branch is concerned with body equilibrium and balance?
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vestibular branch
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What is the range of frequencies the human ear is capable of responding to?
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20 Hz to 20,000 Hz
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By what age should babies turn their heads toward sound sources?
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3-4 months
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Describe the difference in "Deaf" versus "deaf".
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"Deaf" refers to a cultural identity. "deaf" refers to those individuals who cannot hear under normal circumstances
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What is aural atresia?
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A birth defect in which an individual is born with the external auditory canal is completely closed.
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With otitis media, an inidividuals' audiogram would show ______ air conduction level and ________ bone conduction level.
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abnormal air conduction level and normal bone conduction level
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A sensorineural hearing loss is permanent. True of False
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True
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With a sensorineural hearing loss, both air conduction and bone conduction is impaired. True or False.
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True
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Describe the characteristics of Meniere's disease.
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fluctuating sensorineural hearing loss, usually in adults, dizziness/vertigo, sense of fullness in ear, and tinnitus/ringing in the ears
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The audiogram of an individual with Presbycusis have a _________ pattern.
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downward sloping pattern
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Why are acoustic neuromas difficult to diagnose.
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Acoustic neuromas are slow-growing. There is a very gradual loss of hearing, so the individual may not notice the hearing loss until the neuroma is large and the hearing loss is severe.
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What does Speech Audiometry measure?
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How well a person understands speech and discriminates between speech sounds.
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It is within an SLP's scope of practice to perform hearing screenings. True or False
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True
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Describe the levels of hearing loss in regards to mild, moderate, moderately severe, severe, and profound.
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Mild: 16-40 dB
Moderate: 41-55 dB Moderately severe: 56-65 dB severe: 66-89 dB Profound: 90+ dB |
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Audiological symbols represented on an audiogram:
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O= right ear, air conduction
X= left ear, air conduction <= Right ear, bone conduction >= left ear, bone conduction |
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Describe an audiogram of an individual with a noise-induced hearing loss.
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Close to normal hearing in some frequencies, with a sharp downward spike at a specific frequency, and then returning to close to normal.
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What is the first step in an audiological evaluation?
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Using an otoscope to obtain a visual of the ear canal and tympanic membrane (if possible)
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What does a Type A Tympanogram show?
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Normal middle ear pressure and compliance.
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What does a Type B Tympanogram show?
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flat, no peak. Indicative of 1) small ear canal due to wax buildup 2) Normal ear canal volume with fluid inside the middle ear, or 3) large ear canal volume due to PE tubes or a perforation in the ear drum being present
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What is the purpose of a hearing screening?
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To assess a large number of individuals to determine those with normal hearing and those who require a more in-depth audiological evaluation.
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Unilateral hearing loss versus bilateral hearing loss.
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A unilateral hearing loss is a hearing loss in which only one ear has a hearing loss. A bilateral hearing loss is one in which both ears have a hearing loss.
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