Audiometric Techniques

Question 1

must be accomplished by the worker at the reference audiogram

Answer 1

AF Form 1753 (Case History)

Question 2

completed by the worker

Answer 2

section I

Question 3

completed by provider only if asterisked item marked yes by worker

Answer 3

section II

Question 4

when is LEI performed

Answer 4

prior to ALL audiometric tests and HPD fittings

Question 5

earphone placement

Answer 5

remove anything that could interfere with placement
examiner should place earphones on patient
red= right ear
blue= left ear

Question 6

find the safest decibel level a person is able to hear

Answer 6

audiometric threshold

Question 7

sequence of test frequencies

Answer 7

1000, 500, 1000 (retest), 2000, 3000, 4000, & 6000

Question 8

this method should be used for both the Automatic and Manual testing

Answer 8

bracketing procedure

Question 9

first step of bracketing procedure

Answer 9

obtain an initial response
if no response at 30dB increase intensity by 20 dB

Question 10

second step of bracketing procedure

Answer 10

once initial response is obtained, apply standard rule

Question 11

standard rule

Answer 11

positive response –> decrease by 10dB
negative response –> increase by 5dB

Question 12

continue to “bracket” the threshold until

Answer 12

2/3 positive responses at the same decibel level on an ascending track

Question 13

what is the exception

Answer 13

if a positive response is given at -10dB present the tone a second time and record as threshold

Question 14

record results of manual audiometry on a blank

Answer 14

DD Form 2215 (baseline) or 2216 (annual audiogram)

Question 15

one ear has hearing within normal limits and the opposite ear has hearing loss

Answer 15

unilateral hearing loss

Question 16

neither ear is within normal hearing thresholds but one ear is considerably better than the other

Answer 16

asymmetrical hearing loss

Question 17

thresholds difference between the ears are > 40-70 dB HTL at the same frequency
sound vibrations are transmitted through the bone conduction of the skull

Answer 17

crossover