Audiograms
this represents air conduction threshold of right ear on an audiogram
red circle
an example of air conduction transducers and bone conduction transducers
AC: insert earphones, supra-aural earphones, soundfield
BC: bone vibrator/oscillator
the middle ear
the professional responsible for aural rehabilitation
Speech language pathologist (not audiologist)
when an air bone gap is present, but bone conduction threshold is within normal range, the patient has this type of hearing loss
conductive HL
the X axis on an audiogram shows ____, while the Y axis shows ______
x axis shows frequency
y axis shows hearing threshold (volume in dB)
the pure tone average should be the same as this
speech reception threshold
this structure responds to the air blown in and sucked out of the ear
tympanic membrane (ear drum)
A patient is a good fit for hearing aids if they do better in the speech discrimination test at a ______ dB level
louder/higher
patients that have normal hearing for low frequencies but severe/profound hearing loss for high frequencies have hearing loss that looks like this
a ski slope
an air bone gap is present if the difference between the AC threshold and BC threshold is greater than this amount
10 dB
masking is used when a patient has this kind of hearing loss
asymmetric hearing loss
the only type of tympanogram that is normal
type A
If an auditory reflex is only present in one ear, it could be indicative of this
unilateral hearing loss OR issue in central auditory system
the minimum dB level required for sound to cross over
40 dB for surpra-aural headphones
correct order of components for audiogram interpretation (the sentence you write to describe HL on audiogram)
degree of HL, type of HL, bilaterally(or in right/left ear)
ex: mild conductive HL bilaterally
these are the other types of audiometry, besides the one administered by an audiologist
computerized audiometry and automatic audiometry
A type B tympanogram is indicative of these types of hearing loss
conductive or mixed HL
the reason why some children get tubes in their ears
Type A sub s tympanogram is indicative of this pathology
otosclerosis (think "s" for "stiffness")
brackets represent this on an audiogram
masked bone conduction threshold
the difference between the speech recognition test and speech discrimination testing
SRT tests the softest dB level that you can hear speech
speech discrimination testing tests your ability to discriminate words at a comfortable volume (percentage of words correct)
A type C tympanogram is indicative of this pathology
eustachian tube dysfunction
the reason why the difference in adult EAMs and child EAMs matter when fitting hearing aids
Child EAMs are softer and smaller, so the technique for making hearing aid molds changes for kids
pathology that causes growth on ossicles that weigh them down so they can’t vibrate (may cause conductive HL)
Cholesteatoma