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Audiology Praxis Study Guide Questions and Answers

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Audiology Praxis Study Guide Questions and Answers When should an IFSP be implemented? - Answer-Individualized Family Service Plan Appropriate if child is < 3 years When should an IEP be implemented? - Answer-Individualized Education Program Appropriate if child is > = 3 years ...

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  • September 13, 2024
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Audiology Praxis Study
Guide Questions and
Answers
When should an IFSP be implemented? - Answer-Individualized Family Service Plan

Appropriate if child is < 3 years

When should an IEP be implemented? - Answer-Individualized Education Program

Appropriate if child is > = 3 years

Why can't you use pure tones in the sound field? - Answer-Pure tones reverberate
readily and produce standing waves

How large of a difference between ears on calorics is needed for it to be considered
clinically significant? - Answer->= 20%

What happens to ABR in situations of cochlear/neural HL? - Answer-Steeper than
average L/I functions (longer LF latencies, shorter HF latencies)

What happens to ABR in situations of conductive HL? - Answer-Longer latencies -
normal interwave latencies

Differential Dx for auditory neuropathy - Answer-Disproportionately worse WRS than
expected
Normal OAEs
Absent ABR

Best rate for ABR? - Answer-27.1/sec

What is the dynamic range of OHC function? - Answer-50 - 60dB

What is the dynamic range of IHC function? - Answer-60dB (~35 --> 95dB)

Stimulus characteristics of TEOAEs? - Answer-80msec (milli vs/ micro?) broadband
click

, 80 - 86dBSPL

Static evaluation for vestibular function - Answer-inspection for spontaneous/gaze
nystagmus

Patient is not moved

Dynamic evaluation for vestibular function - Answer-Patient is moved using variety of
motion testing to see if nystagmus could be stimulated

What structure is stimulated in Dix-Hallpike Testing? - Answer-Posterior Semicircular
Canal


Endolympth - Answer-Positive (+80mV) charged fluid in Scala Media

Perilympth - Answer-Neutral (0 - +5mV) charged fluid in Scali Tympani + Vestibuli

Charge of IHCs - Answer--45mV (less negative)

Charge of OHCs - Answer--70mV (more negative)

Where is human hearing MOST sensitive? - Answer-Around 2000 - 4000Hz ( Fletcher-
Munson curve)

When does the ABR mature? - Answer-18 months

How long does it take to measure an ABR? - Answer-1.5 - 10msec

When does an MLR occur? - Answer-10 - 80msec

When are late responses measured - Answer-80 - 500msec

What is a cochlear microphonic? - Answer-Summed response of OHCs. ECoG

Where is Wave I of ABR? - Answer-Distal portion of CNVIIII

Where is Wave II of ABR? - Answer-Proximal portion of CNVIII

Where is Wave III of ABR? - Answer-Cochlear Nuculi

Where is Wave IV of ABR? - Answer-Unknown? Multiple bilateral origins

Where is Wave V of ABR? - Answer-Lateral lemniscus termination in contralateral
inferior colliculus

TEOAE response - Answer-6dBSPL above noise floor

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