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57 Cards in this Set
- Front
- Back
What are the 3 systems responsible for balance control |
Visual, vestibular, and proprioception |
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Which vestibular organ is closest to the oval window and cochlea |
Saccule |
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What are the sthree findings that would suggest malingering |
Disagreement between pure tones and speech No shadow curves Behavioral test don't agree with objective tests No response to bone oscillator crazy Audiogram configuration |
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Which for vestibular organ is responsible for vertical up-and-down movement |
Saccule |
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Which for vestibular organ is responsible for Rotational movement |
Semi sircular canals |
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Which for vestibular organ is responsible for horizontal movement |
Utricle |
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What does the stenger phenomenon help us verify |
Malingering when loss is unilateral |
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How is the stenger phenomenon test given |
Present 2 tones of same frequency simultaneously. 10db above threshold in "Better" ear and 10bd below threshold in "bad" ear |
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How do you interpret the results of the stenger phenomenon |
A response means they really have a hearing loss. A lack of response means they are faking because they only precieve the sound in the "good" ear and they don't WANT to respond to that one |
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What is the tulio phenomenon |
Vestibular symptoms evoked by a change in pressure or a loud noise |
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List three tests other than ENG that are used to test the vestibular system |
Rotary chair Vhit Platform posturography Eveoked potentials: VEMP |
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What is nystagmus |
Involuntary eye movement Has a Slow and fast phase |
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Nystagmus is named by |
direction of fast phase |
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The greater the angles of the slow phase.... |
The more intense the nystagmus |
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Can nystagmus be congenit/pathologic, physiogic or induced |
Yes |
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What is VOR |
Vestibulo-ocular reflex |
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How do we test VOR |
Oculomotor testing in ENG or rotary chair |
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Why is VOR important |
Helps us maintain focus on an object while moving |
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What are calorics |
Bi-thermal air or water to the ear canals to stimulate the SSC and produce nystagmus response COWS |
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How do we interpret caloric test results |
Look for unilateral weakness or suggest peripheral pathology Failure of fixation suppression for central pathology |
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What is BPPV |
Positional vertigo |
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How do we test for BPPV |
Dix hallpike |
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What are the 4 tests with in ENG |
Gaze Saccades Smooth pursuit Optokinetics positional/dix hallpike |
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What is an auditory processing disorder |
Difficulty processing auditory info regardless of peripheral auditory function |
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APD can be difficult to diagnose because the symptoms are similar to.... |
ADHD Dyslexia Learning disabilities Language disorders Low is Hearing loss |
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What are the 2 strategies used to help visualize the small AEP responses in a lot of background noise |
Averaging Differential amplification |
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What is absolute latency |
Time of a given peak |
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What is interpeak latency |
Time between two peaks |
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How does stimulus intensity affect the abr |
As intensity decreases the latency shifts |
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What will a conductive HL look like in an abr |
All waves prolonged, normal peak latencies, morphology is relatively unchanged |
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What will a SNHL look like in an abr |
Morphology changes, amplitudes reduced, waves absent, absikutle interpeak latencies are unaffected |
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What is meant by electrode impedance impedance |
Resistance to flow of energy between the electrode and the person being tested |
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What are the clinical uses of AEPs |
Differential diagnosis of retrocochlear Objective threshold estimation Interaoperative monitoring |
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What is the term used to describe the shape of an APE Wave |
Morphology |
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What are the items most often evaluated for neurodiagonstic ABR |
Latency and amplitude |
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What are the expected values for wave 1 |
1.5-2msec |
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What are the expected values for wave 3 |
3.5-4msec |
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What are the expected values for wave 5 |
5.5-6msec |
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Peripheral pathology involve what |
Semicircular canals Utricle Saccule |
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Central pathologies involve what |
Vestibular nuclei Cerebellum |
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The SSC houses what? |
The crista (hair bundles, cupola, hair cells) |
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Is meniere's disease a central or peripheral pathology |
Peripheral |
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Is vestibular neuritis a central or peripheral pathology |
Peripheral |
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Is labrynthitis a central or peripheral pathology |
Peripheral |
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Is BPPV a central or peripheral pathology |
Peripheral |
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Is vertuginous migraine a central or peripheral pathology |
Central |
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Is perilymph fistula a central or peripheral pathology |
Peripheral |
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Is vestibular schwanomma a central or peripheral pathology |
Peripheral |
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Is mal de dabarquememt syndrome a central or peripheral pathology |
Central |
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Is cerebellar degeneration a central or peripheral pathology |
Central |
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Positive dix hallpike suggests |
peripheral pathology |
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Lack of fixation suppression during calorics suggests |
central pathology |
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Unilateral or bilateral weakness in calorics suggests |
Peripheral pathology |
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Saccades during gaze testing suggests |
Central pathology |
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Asymmetric optokinetics responses suggests |
Central pathology |
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Cogwheeling during sinusoidal tracking suggests |
Central pathology |
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Abnormal saccades suggests |
Central pathology |