HAC Hearing Aid Audiology & Hearing Assessment 3

Question 1

Which measure reflects the degree of cochlear dead regions and influences hearing aid gain recommendations?

Accepted Answer

Threshold equalizing noise (TEN) test result

Answer

The TEN test identifies cochlear dead regions where inner hair cells are absent, indicating that amplification at those frequencies may be ineffective.

Question 2

What is the primary purpose of Real-Ear-to-Coupler Difference (RECD) measurements in pediatric fitting?

Accepted Answer

To convert real-ear targets to 2-cc coupler values for accurate hearing aid programming

Answer

RECD accounts for differences between an individual's ear canal acoustics and the standard 2-cc coupler, ensuring targets are applied accurately.

Question 3

A patient's bone-conduction thresholds are normal but air-conduction thresholds show a 40 dB loss. What type of hearing loss is present?

Accepted Answer

Conductive

Answer

When bone conduction is normal but air conduction is elevated, the air-bone gap indicates a conductive hearing loss.

Question 4

Which reflex arc is tested when measuring the acoustic stapedial reflex?

Accepted Answer

CN VIII afferent and CN VII efferent bilaterally

Answer

The acoustic reflex involves CN VIII carrying afferent signals and CN VII driving the stapedius muscle bilaterally.

Question 5

What is 'rollover' on a performance-intensity function, and what does it suggest?

Accepted Answer

Decline in WRS at high intensities, suggesting retrocochlear pathology

Answer

Rollover is a decrease in word recognition scores as intensity increases beyond the optimal level, which is a sign of retrocochlear dysfunction.

(HAC) Hearing Aid Certification Practice Test

(HAC) Hearing Aid Certification Practice Test

HAC Hearing Aid Audiology & Hearing Assessment 3