Ch 4 Pure Tone Audiometry

Question 0

Thresholds

Answer 0

The level of hearing in an individual. This reading can be compared to established norms.

Question 1

Audiometer

Answer 1

An electronic device that tests pure tones of hearing.

Question 2

Masking

Answer 2

A technique used for the introduction of a noise into the non-test ear during audiometry.

Question 3

Calibration issues

Answer 3

Every ear is different, which creates the problem of finding and making an earphone that is properly calibrated to fit an individual’s ear.

Question 4

False negative response

Answer 4

When a person fails to indicate that they have heard a tone.

Question 5

False positive response

Answer 5

When a patient responds when no tone was presented.

Question 6

Pure tone average (PTA)

Answer 6

Average threshold levels for each ear at certain frequencies are measured.

Question 7

Variable pure tone average (VPTA)

Answer 7

This consists of the three poorest thresholds obtained at 500, 1000, 2000, & 4000 Hz. This can be more effective in estimating the communication impact of a hearing loss.

Question 8

Distortional bone conduction

Answer 8

The slight distortion of the skull that can alter the results of the bone conduction test.

Question 9

Inertial bone conduction

Answer 9

A form of inner ear stimulation caused by slight skull vibration, which causes the stapes to move in and out of the oval window.

Question 10

Osseotympanic bone conduction

Answer 10

When the air in the outer ear canal begins to vibrate and travel inside the ear to the tympanic membrane.

Question 11

Air-bone gap (ABG)

Answer 11

The difference between the air and bone conduction thresholds.

Question 12

Formula for Air Conduction

Answer 12

Air Conduction = Bone Conduction + Air-Bone Gap

Question 13

Tactile Response

Answer 13

When a patient feels vibration from a sound and responds to the vibration as a heard sound.