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69 Cards in this Set
- Front
- Back
Part of the audiometer that is used to set the level of a tone that is present is the
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attenuator
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Air conduction testing may be performed using:
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supra-aural headphones
insert earphones |
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Main purpose of pure-tone testing by bone conduction
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Diagnostic: to determine type of hearing loss
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A pure-tone thershold in clinical audiometry is
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level in decibels (HL) where someone responds 75% of the time
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THe purpose of clinical masking
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to prevent the non-test ear from responding to sound in test ear
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The audiometric patter of a conductive hearing loss is
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bone cond. within normal limits and air conduction poorer than normal w/ air-bone gaps
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Speech reception test (SRT)
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performed using spondees and the resulting score is dB HL
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Word recognition testing is
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performed using a list of single syllable words and the resulting score is a %
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IN an audiological test situation, speech understanding ability can vary as a function of
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test level
test materials live voice vs. recorded mode of presentation of test materials |
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Tympanometry provides information primarily about
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middle ear
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tympanonogram indicates
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admittance as a function of air pressure change
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measuring the integrity of the acoustic reflex arc involves elements of
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middle ear, inner ear, aud nerve, facial nerve
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ABR
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is measured using electrodes
is a far-field potential |
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Which of the following is a stimulus dependent Auditory Evoked Potential?
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Electrocochleography
ABR |
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You use the ABR to estimate a child's hearing status. No clearly defined peaks were seen in the recording. What could cause these results?
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Patient has a severe to profound HL
Electrode impedance was very hight |
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OAE
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generated w/ clicks, tones, may be present w/ no stimulation
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TEOAE
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wil not be present if there is fluid in the middle ear
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What do ABR, Evoked OAEs and Immitance testing have in common?
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they are all objective tests
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A system with high admittance has...impedance
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low
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and interaural attenuation factor of 40db HL when testing with headphones means:
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the skull attenuates sound by 40dB HL btw ears
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Audiogram: Circles/[=
X/] |
left=X/]
right= cirlce/ [ |
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refering to your audiogram, what tye of tympanogram would you expect for the right ear
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Peak at 0 pressure, good admittance
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TEOAEs in left ear?
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NO
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Referring to Audiogram..why no TEOAEs?
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NO TEOEAs if middle ear is abnormal which is conductive loss bc sound wouldn't go through to the chochlea
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95 dB HL stimulus to the right ear
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Acoustic reflex: Present
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110 dB Hl stimulus to the left ear
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present acoustic reflex
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110 dB HL stimulus to left ear
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absent AR
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110 dB HL stimulus to the left ear (contralateral)
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absent
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PTA of right ear and left
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42 and 68
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How would you classify the KIND of TYPE of hearing loss
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right: Sensosineural
left: Conductive |
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Predict the SRT scores
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Right: 45
Left: 70 |
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Tympanogram normal or abnormal?
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Right: NORmal
Left: Abnormal |
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what is the configuration of the hearling loss
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right: flat
left: Slopping |
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You are going to test for distortion products. F1 will be 2000Hz. What's f2
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2400Hz
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What is the most robust distortion product?
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2F1-F2
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What is the inter aural attenuation factor for bone conduction?
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0 dB HL
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Test result you would see w/ otitis media w/ effusion
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Type B
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Microtia
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None of the above
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Remediation of SHL
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Management of Envir.
Heaing AIds CI Aural Rehab |
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x-linked means
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A trait is carried by X chromosome
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Waarenburgs Syndrome
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White Forelock
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young children, mild HL
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Result in poor audioroty attention
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Operant conditioning
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VRA
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Best test for determing in HL in 2 mo old
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ABR
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Conductive loss
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Otosclerosis
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pain, pressure and 'plugged ear' feeling with HL
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otitis media with effusion
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Exploratory surgery reveals an eroded ossicular chain
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Cholesteatoma
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Can happen if Hyperbillrubinemia is not treated soon enough
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Kernicterus
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Prenatal infection
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Rubella
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Permanent Threshold Shift
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Loss of outer hair cell
Noise induced hearing loss |
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Audiometric results would help you differentiate btw noise-induced hearing loss and an acoustic tumor
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hearing loss is asymmetrial, poorer high freq loss in RIght ear
SRT excellent in left, poor in right |
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CANS
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Perform Complex Auditory Signal Processing
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any morbid phenomenon or departure from the normal in function, appearance, or sensation, experienced by the pt and indicative of a disease. subjective sign of a disease
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symptom
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Your patienthas a moderate conductive HL as a determined by air and bone conduction testing. What other test will help you differeniate btw otitis media and otosclerosis
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Immitance
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Which audiometric result would help you differentiate btw sphyliss and Meniere's disease?
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Hearing is asymmetric with a low freq senssorinerual loss
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Tympanosclerosis is a demylinating disease of 8th nerve
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false
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Noise induced HL greatest peak at 4000Hz
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True
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Aminoglycosides are used to treat viral infections
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False
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Mutation of Connexin 26 gene affects potassium transport in hair cells
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true
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Low frew of HL is common in patients w/ Meinere's disesae
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flase
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Imagine to diagnois tumor
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MRI, CT, PET
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Autosomal Recessive HL
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Usher's Syndrome
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Prebycusis
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Sensory
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Ototoxic chemicals
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Heavy Metals
Benzo |
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Ototoxic Drugs
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Loop diuretics
Antimalarial |
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Audiogram for Otosclerosis
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gap btw air and bone
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Noise INduced Audiogram
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Sharp Dip
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Prebycusis
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Normal then downward slope
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Rubella
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Severe Slope (Profound LOSS)
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