Certified Safety Professional Exam 2025 – 400 Free Practice Questions to Pass the Exam

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What constitutes a standard threshold shift in hearing?

A change of 5 dB or more at specified frequencies

A change of 10 dB or more at specified frequencies

A standard threshold shift in hearing is defined as a significant change in hearing sensitivity, specifically a change of 10 dB or more at specified frequencies. This threshold is important in occupational health and safety as it helps in identifying individuals who may be experiencing noise-induced hearing loss. The 10 dB change serves as a benchmark for triggering further evaluations and interventions to prevent further auditory damage.

In workplaces and various safety programs, monitoring hearing sensitivity is crucial, especially in environments with high noise levels. A shift of this magnitude indicates potential risk factors that could warrant medical evaluations or changes in workplace practices. The thresholds for other changes mentioned in the options do not align with the recognized standard used in audiometric evaluations, which is why they are not considered standard threshold shifts.

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A change of 15 dB or more at any frequency

A change of 20 dB or more at lower frequencies

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