HAC Types of Hearing Loss & Assessment 2

Question 1

A patient's audiogram shows normal bone conduction thresholds but elevated air conduction thresholds bilaterally. This pattern is most consistent with:

Accepted Answer

Conductive hearing loss

Answer

An air-bone gap with normal bone conduction indicates a conductive component blocking sound transmission to the cochlea.

Question 2

Which tympanogram type is associated with a perforated tympanic membrane?

Accepted Answer

Type B with large volume

Answer

A flat (Type B) tympanogram with an abnormally large ear canal volume suggests a tympanic membrane perforation or patent PE tube.

Question 3

Otosclerosis primarily causes hearing loss by:

Accepted Answer

Fixating the stapes footplate in the oval window

Answer

Otosclerosis is abnormal bone growth that immobilizes the stapes, preventing efficient sound transmission to the inner ear.

Question 4

In audiometry, the term 'threshold' is defined as the softest level at which a patient responds:

Accepted Answer

50% of the time

Answer

Threshold is conventionally defined as the lowest intensity at which the patient responds correctly at least 50% of the time.

Question 5

Which type of hearing loss is most commonly associated with noise exposure?

Accepted Answer

High-frequency sensorineural loss

Answer

Noise-induced hearing loss characteristically affects the high frequencies, typically showing a notch at 4000 Hz on the audiogram.

(HAC) Hearing Aid Certification Practice Test

(HAC) Hearing Aid Certification Practice Test

HAC Types of Hearing Loss & Assessment 2