Audiology Exam 3

sensorineural hearing loss

air conduction- not normal

bone conduction- not normal

air bone gap? no

mixed hearing loss

air conduction- not normal

bone conduction- not normal

air bone gap? yes

conductive hearing loss

outside of the booth

case history, otoscopy, tympanometry 

inside the booth

sdt/srt; word recognition, air conduction + bone conduction

behvaioral tests

require patients active cooperation and a behavioral response

pure tone threshold, art/sdt, word recognition

objective tests

require no behavioral response

tymp, oae, abr

tympanometry

test of the middle ear function

how the sound is transmitted through the middle ear (indirectly), evaluates the functional properties of the middle ear

can help identify middle ear conditions

type b

something blocking the ear canal

small volume

flat 

wax, fluid, TM hole, tubes

conductive or mixed

type A 

normal

peak 

normal hearing or sensorineural

Type C

negative middle ear pressure (-150 or worse)

feels stopped up

Eustachian tube dysfunction

peak to the left

any type of hearing loss

type b- normal volume

middle ear fluid

type b- greater volume

tm hole or tubes

type b- small volume

wax

sdt 

The lowest level at which the client can detect speech 50%

can hear words, don’t understand

stimuli- anything

results- db level

srt

The lowest level client can

understand speech 50% of the time

stimuli- spondee words

responses: say the word; point to the picture

reselts- db level

flat audiogram

srt/sdt should be within 10 db of PTA3

rising/sloping audiogram

within 10 db of PTA2

word recognition

prefer to use recorded speech

results are percentage

40 db louder than threshold

word recognition conductive 

should not have trouble 

has problems with loudness not clearness

word recogniton SNHL or mixed

will miss words

problems with both loudness and clearness

speech sound audiogram

can hear whats below the line

most comfortable level

most comfortably loud

uncomfortable loudness level

speech is uncomfortably loud 

dynamic range

range of uncomfortable loudness to comfortable loudness