Lesson 9 - Pure Tone Bone Condution Tests

Question 1

If the outer in middle parts are normal:

a. air thresholds will equal the bone thresholds
b. air thresholds will be better than the bone thresholds
c. air thresholds will be worse than the bone thresholds
d. you cannot measure bone thresholds

Answer 1

a. air thresholds will equal the bone thresholds

Question 2

In bone conduction testing, the receiver should be:

a. placed so that it is in contact with the pinna as well as the mastoid
b. held in place by the person being tested
c. placed at the most sensitive spot on the mastoid of the test ear
d. held in place by a headband that exerts exactly one pound of pressure

Answer 2

c. placed at the most sensitive spot on the mastoid of the test ear

Question 3

Sounds of the bone conduction receiver may stimulate the non-test ear at:

a. 10 dB or less
b. 20 dB – 30 dB
c. 30 dB – 40 dB
d. 40 dB or more

Answer 3

a. 10 dB or less

Question 4

A source of information that helps to identify which ear is responding to bone conduction stimuli is:

a. tympanometry
b. acoustic reflex testing
c. bone conduction with masking
d. all of the above

Answer 4

d. all of the above

Question 5

Bone conduction testing directly stimulates:

a. the middle ear
b. semi-circular canals
c. the cochlea
d. the pinna

Answer 5

c. the cochlea

Question 6

Most conductive losses:

a. are medically correctable
b. display breakdown or obstruction in the middle ear
c. display good discrimination
d. all of the above

Answer 6

d. all of the above

Question 7

Ambient noise in the environment during bone conduction testing will:

a. affect the test results in the lower frequencies
b. affect the test results in the mid frequencies
c. affect the test results in the high frequencies
d. all of the above

Answer 7

a. affect the test results in the lower frequencies

Question 8

During the testing process, it is best to test bone conduction:

a. before air conduction testing
b. after air conduction testing
c. after the case history
d. after impedance audiometry

Answer 8

b. after air conduction testing

Question 9

A conductive loss may be caused by:

a. perforations of the tympanic membrane
b. immobile middle ear ossicles
c. otitis media
d. all of the above

Answer 9

d. all of the above

Question 10

Bone conduction thresholds worse than her conduction thresholds may be caused by:

a. poor placement of the vibrator
b. a skull fracture
c. thickness of the skull
d. all of the above

Answer 10

d. all of the above