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Visual and Auditory SystemsMedical-Surgical Nursing-7th edition

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Question Answer
Normal speech is approximately _____ decibels, and a whisper is normally _____ decibels.
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Normal speech= 40-65 dB and whispers = 20 dB
What frequencies can a child/young adult hear?
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16-20,000 Hz (most sensitive to 500-4000 Hz)
__________ audiometry is the testing of large numbers of persons with a fast, simple test to detect possible hearing problems.
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Screening
_______ can cause inconsistent results when testing a patient using pure-tone audiometry
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Tinnitus
This hearing test involves attaching electrodes to a patient in a darkened room (typically on the vertex, mastoid process, earlobes and forehead) and using a computer to isolate auditory brain signals.
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The auditory evoked potential test (AEP)
Which test is most useful to measure hearing in an uncooperative patient or for one that is unable to communicate meaningful information?
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The electrocochleography
This hearing test records electrical activity in the cochlea and auditory nerve...
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The electrocochleography
This test measures electrical peaks along the auditory pathway of the inner ear to the brain and provides diagnostic information related to acoustical neuromas, brainstem problems and stroke.
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Auditory Brainstem Response (ABR)
Tympanometry is useful in the diagnosis of _________.
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Middle ear effusions (escape of pus/fluid from the middle ear)
In _________, a probe is placed snugly in the external ear canal and positive and negative pressures are then applied. Compliance of the middle ear is measured in response to the pressures.
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Tympanometry
  
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