Audiometric Testing Procedures Flashcards
6 cards from real CAOHC practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Audiometric Testing Procedures flashcards as text
What is the maximum permissible ambient noise level in an audiometric test booth at 1000 Hz according to OSHA?
Answer: 40 dB SPL
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.
During pure-tone audiometry, what is the standard procedure when a patient does not respond at the initial presentation level?
Answer: Increase the intensity in 5 dB steps until a response is obtained
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.
Which ear should typically be tested first during audiometric evaluation?
Answer: The better-hearing ear as reported by the patient
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.
What is the standard test frequency sequence in occupational audiometry?
Answer: 1000, 2000, 3000, 4000, 6000, 8000, then 500 Hz, with a retest at 1000 Hz
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.
What type of transducer is most commonly used for standard occupational audiometry?
Answer: Supra-aural headphones such as TDH-39 or equivalent
Supra-aural headphones such as the TDH-39 or TDH-49 are the traditional standard transducers for occupational audiometry.
How often must an audiometer undergo an exhaustive calibration check?
Answer: At least annually for acoustic calibration
OSHA requires that audiometers receive an acoustic calibration at least annually, in addition to daily functional checks.