Test 1 Flashcards
what are some of the factors that would make a child “at risk” for sensorineural hearing loss according the the high-risk register?
we look for birth weight, head, neck, pregnancy problems, and family hx
what are the pure-tone testing procedures called and what psychophysical method were they derived?
the method of limits
following case history what should be performed prior to the hearing test?
examination of otoscope; look in the ear first
during the case history what should be performed prior to the hearing test?
examination of otoscope; look in the ear first
during the case history information for a child, what are some of the more pertinent questions that should be asked concerning hearing?
family hearing loss, what do you think about their hearing, how do you wake them up, any problems during pregnancy, have they been to a pediatrician
during the case history information for an adult, what are some of the more permanent questions that should be asked concerning hearing?
what’s important, any ringing, do you have vertigo, loud environments, and aged hearing
what are the pure tone frequencies that should be tested for air conduction and cone conduction accordion to ASHA guidelines
air conduction- start at 1000 Hz can go to 250-500 Hz then retest 1000, 2000, 3000, 4000, 6000, 8000’ 1500 when there is an inner ovate bc there is a 20 decibel different. bone conduction- we don’t test between 6-8000 Hz (too many variables)
when would you use sound field testing? what should you be aware of when performing this test?
when a person doesn’t want something on/in their ears, information from a speaker; only tests the better eat, they are responses not thresholds
what are some advantages of insert earphones?
can help with masking, noisy environments, aging peoples ear bc its not rounder anymore its elliptical; insert can hold ear canal open
what ages do we perform behavioral observation audiometry?
infants to 4 months, eye blinking, arousal from sleep, startle (has to be 65 dB), if drinking a bottle to look for sucking pattern
what ages can we begin using Visual Reinforcement Audiometry (VRA)? what ages are the best?
this is then a child form beginning ages 4-7 months will start to do head turns, localizing, sitting up, cognition is getting better. best responses- 1-3 years; 3 year old will be wanting the light up toy to go get it
why would we perform “ultra-high frequency” hearing testing?
goes above 8000 Hz, can give high frequency probabilities, ultra-high frequency can help pick up lower frequencies, a sick patient or iv antibiotic patients will have their high-frequencies affected first; can help decide between a loss or getting old.
what are the main parts and area of the tympanic membrane? what are some of the landmarks to be observed?
look at the jumbo (is the tip of the manuverium of the malleus; pulls the ear drum backward to give it a cone shape) then we look for the cone of light; 3 layers- outside- epithium (skin), middle- fibrous (strength), innermost- mucosal lining (too much negative pressure can start polling fluid from here); Pars tinsa- where the tubes go; pars flaccida - has 2 layers the fibrous layers (old lady who got hit by bus- her ear drum got a hole in the ear drum; can’t grow back the pars tinsa)
what is the typical conversational speech
50 dBHL
when testing a infant, what is considered the best state for the child to be in
a stage of light sleep
what is the blink reflex called
auraparapebile; startle refelx
what is dB
decibels
what is HL
hearing level
what is SPL
sound pressure level
what is IL
intensity level
what is SL
sensation level
how does the skull move in response to frequency vibration
low frequency- moves all together; 800 hz- moves in and out; above 1600 Hz moves segmental
what is the speed of sound
1125 ft/s
