CAOHC Audiometric Testing Procedures 2

Question 1

What is the maximum permissible ambient noise level in an audiometric test booth at 1000 Hz according to OSHA?

Accepted Answer

40 dB SPL

Answer

OSHA specifies maximum permissible ambient noise levels for audiometric test rooms, with 40 dB SPL at 1000 Hz per Appendix D of 29 CFR 1910.95.

Question 2

During pure-tone audiometry, what is the standard procedure when a patient does not respond at the initial presentation level?

Accepted Answer

Increase the intensity in 5 dB steps until a response is obtained

Answer

Standard audiometric procedure calls for increasing intensity in 5 dB steps when no response is obtained, then decreasing in 10 dB steps after a response.

Question 3

Which ear should typically be tested first during audiometric evaluation?

Accepted Answer

The better-hearing ear as reported by the patient

Answer

Standard practice is to begin testing with the better ear as reported by the patient, which helps establish cooperation and understanding of the test procedure.

Question 4

What is the standard test frequency sequence in occupational audiometry?

Accepted Answer

1000, 2000, 3000, 4000, 6000, 8000, then 500 Hz, with a retest at 1000 Hz

Answer

The standard sequence starts at 1000 Hz as a familiarization frequency, proceeds through high frequencies, drops to 500 Hz, then retests 1000 Hz to verify reliability.

Question 5

What type of transducer is most commonly used for standard occupational audiometry?

Accepted Answer

Supra-aural headphones such as TDH-39 or equivalent

Answer

Supra-aural headphones such as the TDH-39 or TDH-49 are the traditional standard transducers for occupational audiometry.

CAOHC - Council for Accreditation in Occupational Hearing Conservation Practice Test

CAOHC - Council for Accreditation in Occupational Hearing Conservation Practice Test

CAOHC Audiometric Testing Procedures 2