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Audiology Praxis 5343 Exam Questions and Answers All Correct New Update

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Audiology Praxis 5343 Exam Questions and Answers All Correct New Update What are the phonetically balanced word lists used for? - Answer Word recognition testing. Single-syllable words (CVC) that are phonetically balanced, meaning the beginning and ending phonemes are chosen according to their ...

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  • September 14, 2024
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Audiology Praxis 5343 Exam Questions
and Answers All Correct New Update
What are the phonetically balanced word lists used for? - Answer ✔ Word recognition
testing. Single-syllable words (CVC) that are phonetically balanced, meaning the
beginning and ending phonemes are chosen according to their frequency of use in
conversational speech

Discuss the pros and cons of MLV vs. recorded - Answer ✔ *MLV can be personalized.
Recorded is more consistent and more standardized. MLV can be paced however is
needed. Accents are a barrier (could be different than local dialect with either
presentation). Recorded voice presents normative data (helpful when fitting).

Make a list of age-appropriate testing methods used for infants to age 6. Behavioral &
speech. - Answer ✔ 0-6 months: BOA (or ABR)
6 months-2.5 years: VRA
2.5-5 years: CPA

<2 years: Early speech perception test
2-5 years: NU CHIPS
4-6: WIPI
6+: PBK-50

How would you achieve SAT with a very young child who does not talk? - Answer ✔
VRA, identify objects, point to body parts

What is the major difference between behavior observation audiometry (BOA) and
visual reinforcement audiometry (VRA) - Answer ✔ BOA: birth-4 mo; reflexive behaviors
VRA: 5 mo-2yrs, involves conditioning to stimuli (reinforce with video/items)

What are the different types of tympanograms and what do they indicate? - Answer ✔
Type A= Normal

Type A(S)= Shallow (small peak). Thick, scarred TM; otosclerosis; cholesteatoma; fluid.

Type A(D)= Deep (high peak). Ossicular disarticulation; monomeric TM

Type B= Flat (no peak). Large ECV= TM perf or patent PE tube.
Normal ECV= ME effusion, blocked PE tube, cerumen occlusion.
Small ECV= Blocked probe, cerumen occlusion.

Type C= Negative (normal peak, negative pressure).
Fluid, ET dysfunction, beginning or resolution of ear infection.

,Stiffness vs. mass in tymps. - Answer ✔ More than normal energy reflected back and
recorded at the mic, suggests stiff ME system (ossicular fixation, OM, cholesteatoma)

Less energy than normal reflected, back and recorded at the mic suggested flaccid ME
system (discontinuity of ME ossicles, monomeric TM)

What is peak admittance? - Answer ✔ A measure of the of ability of the middle ear
system to accept acoustic energy. The tympanic membrane is in its position of rest; it is
not forced medially or laterally. The pressure in the canal is equal to the pressure in the
middle ear.

The peak tends to be large with "loosening" pathologies: ossicular discontinuities,
atrophic TMs.
Admittance is small with stiffening pathologies: middle ear effusion, otosclerosis

What is Tympanometric peak pressure? - Answer ✔ Middle ear air pressure. TPP is
negative when middle ear pressure is below ambient. TPP is associated with
eustachian tube malfunction. TPP varies widely in children's ears that are normal

What is gradient /tympanometric width (TW) is a measure of? - Answer ✔ how "sharply
peaked" vs. "flattened" the tympanogram is. Flattened tympanograms are associated
with effusion. Gradient / TW are mainly an attempt to quantify this qualitative
observation

Which muscle do we measure in acoustic reflexes?

What is the stimuli? - Answer ✔ Stapedius

500, 1k, 2k, (not 4000Hz). Broadband noise. Should be 70-90 dB above threshold.

Elevated acoustic reflex levels in the presence of normal hearing might lead you to think
what? - Answer ✔ Tumor/other retrocochlear pathology

Review acoustic reflex pathway - Answer ✔ :)

For what suspected condition would you obtain reflex decay? - Answer ✔ Present
activator continuously for 10 seconds and if the reflex rapidly decreases in strength, this
is "fatigue" and it is often associated with retrocochlear pathology (e.g., 8th-nerve
tumor)

What do rotational tests indicate about the patient? - Answer ✔ bilateral weakness--
loss of function on both sides

Difference between VNG and ENG? - Answer ✔

, Purpose of caloric testing - Answer ✔ Assessment of horizontal SCC. The only test to
assess right and left individual peripheral systems.

When endolymph is heated, it will rise. When it's cooler, it will sink.

What should caloric responses be? - Answer ✔ COWS (Cool stimulation should beat
eyes in the opposite direction of stimulated ear. Warm---same direction)

What is the relationship between fundamental frequencies and harmonics? - Answer ✔
F0= lowest freq component of a complex periodic sound; harmonic is a regular and
repeating multiple of the f0

In which frequencies and at what intensities are most speech sounds produced? -
Answer ✔ When applied to speech, the human voice spans a range from about 125Hz
to 8kHz. 55-65 dB

Define threshold - Answer ✔ "Threshold is defined as the lowest decibel hearing level at
which responses occur in at least one half of a series of ascending trials. The minimum
number of responses needed to determine the threshold of hearing is two responses
out of three presentations at a single level ."

What is the relationship between sound pressure level (SPL) and hearing level (HL)? -
Answer ✔ dB HL normalizes SPL scale to 0 because we do not hear the same at all
frequencies. Our ears do not perceive low- and high-frequency sounds as well as they
do sounds between 500 and 4,000 Hz. Thus, normal hearing, if plotted on an audiogram
using the SPL scale, would be a curved, wavy line.

Describe the function of each of the three major parts of the hearing mechanism -
Answer ✔ OUTER: Pinna-- Funneling of sound & localization. Ear canal-- Amplifies
sounds & protects TM
MIDDLE: Reduces impedance mismatch & Protects from loud sounds (also, Eustachian
tube equalizes pressure BC for the TM to vibrate, the air pressure needs to be equal on
each side of the TM.)
INNER: amplify sounds, frequency selectivity, converts sound to electrical signal,
maintain balance

Function of outer and inner hair cells? - Answer ✔ OUTER: Amplification of
displacement on the traveling wave & frequency selectivity (active processes are here)
INNER: Nerve excitation= send signals to auditory nerve

What are the fluids found in the labyrinths of the inner ear? - Answer ✔ Scala vestibuli:
Perilymph
Scala media: Endolymph
Scala tympani: Perilymph

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