HAC Hearing Aid Verification & Validation 2

Question 1

Which prescriptive fitting formula is widely used for adult hearing aid verification targets?

Accepted Answer

NAL-NL2 (National Acoustic Laboratories Non-Linear 2)

Answer

HINT (Hearing in Noise Test)

Answer

SRT (Speech Reception Threshold)

Answer

ABR (Auditory Brainstem Response)

Question 2

The International Outcome Inventory for Hearing Aids (IOI-HA) assesses patient outcomes across how many domains?

Accepted Answer

7

Answer

3

Answer

5

Answer

10

Question 3

The Real Ear Unaided Response (REUR) measures:

Accepted Answer

The natural sound pressure resonance of the open, unaided ear canal

Answer

The amplified output of the hearing aid at the eardrum

Answer

The maximum output of the hearing aid at high input levels

Answer

The hearing aid gain compared to the prescriptive target

Question 4

The International Speech Test Signal (ISTS) is used during hearing aid verification to:

Accepted Answer

Provide a standardized, speech-shaped input signal for real ear and electroacoustic measurements

Answer

Evaluate the patient's speech discrimination in noise

Answer

Measure the patient's loudness discomfort level for speech

Answer

Assess aided word recognition scores at different presentation levels

Question 5

ANSI S3.22 is the standard that governs:

Accepted Answer

Electroacoustic measurement specifications and tolerances for hearing aids

Answer

Ethical guidelines and scope of practice for hearing aid dispensers

Answer

Licensing requirements for audiologists and hearing aid specialists

Answer

Patient counseling protocols in hearing rehabilitation

Question 6

Real Ear Insertion Gain (REIG) is calculated by:

Accepted Answer

Subtracting the REUR from the REAR (REAR − REUR)

Answer

Subtracting the REAR from the REOR (REOR − REAR)

Answer

Subtracting the REAR from the REUR (REUR − REAR)

Answer

Subtracting the RESR from the REAR (RESR − REAR)

Question 7

Output Sound Pressure Level at 90 dB SPL (OSPL90) is verified during hearing aid fitting primarily to:

Accepted Answer

Ensure the maximum output does not exceed the patient's loudness discomfort levels

Answer

Confirm the hearing aid's frequency response in quiet environments

Answer

Measure the signal-to-noise ratio of the hearing aid circuitry

Answer

Evaluate the battery current drain under high-load conditions