praxis audiology Flashcards
(31 cards)
acoustic neuroma
tumor on acoustic nerve: normal ability to detect pure tones, normal speech recognition in a quiet room, unilateral facial tingling & ringing, slight dizziness, mild balance problems
carharts notch
reflects specific loss at 2000 Hz
as indicated by bone-conduction testing,
often reflected in otosclerosis audiogram
conductive hearing loss
outer or middle ear malfunctions
CN VIII
vestibular & auditory-acoustic branches,
carries electrical sound impulses from the cochlea to the brain
presbycusis
hearing impairment in older people,
resulting in a sloping, high-frequency loss
menieres
causes sensorineural hearing loss,
accompanied by vertigo & tinnitus
signal to noise ratio
separating
signal of interest (speech)
from background noise
homophenous pairs
visible labials that look the same & may be confusing
“man-ban”
tensor palatini
exerts the pull that allows the eustachian tube to open
during yawning & swallowing
cleft palate hearing problems
frequently eustachian tube dysfunction
bc of oral-facial anomalies
SRTs
(speech reception thresholds)
lowest level of hearing
at which a person can understand
50% of words presented
aural/oral method emphasizes
making use of residual hearing through amplification,
& helping learn to communicate to be comfortable in mainstream settings with hearing people
deaf speech characteristics
omission of /s/ in all word positions, cons cluster reduction, occasional irrelevance of speech including non sequiturs, improper stress patterns including excessive pitch inflections
outer ear
auricle/pinna
& external auditory canal
middle ear
air-filled cavity,
separated from outer ear by tympanic membrane,
contains ossicular chain,
eustachian tube connects to nasopharynx
hearing loss
normal: 15
mild: 16-40
mod: 41-55
mod-severe: 56-70
severe: 71-90
profound: 90+
communication training
approach emphasis
verbal (total communication & aural/oral approach) or nonverbal (sign language)
communication training
auditory training,
speech reading,
cued speech,
training in subsystems
reflexive response techniques
used to assess infants & children with hearing loss
aural rehab
implemented by team
to help people with HL achieve their full potential
HL severity
depends on age of onset,
& degree of the loss,
communication disorders may manifest in 1+ subsystems
retrocochlear damage
employs electrophysiological audiometry & medical imaging,
damage usually caused by tumors
which can grow slowly
& make diagnosis challenging
acoustic immitance testing
involving tympanometry or acoustic reflex testing,
used to assess middle ear function
hearing impairment assessment procedures
depends on nature of the problem,
pure-tone & speech audiometry
carried out through air- or bone-conduction testing