CAOHC EXAM with Questions and Correct Answers

Unprotected exposure to hazardous noise causes: - Temporary and/or permanent hearing loss Temporary and/or permanent tinnitus (ringing, buzzing in ears) Occupational noise sources - Agriculture, mining, railroads • Manufacturing - largest hazardous noise-exposed population • Machinery, weapons, vehicles, tools, equipment Noise-Induced Illness: - hearing loss and tinnitus Occurs gradually, over time, from repeated exposures Noise-Induced Injury: - hearing loss and tinnitus Occurs from one significant exposure or event Recreational noise sources - Lawn care, power tools, equipment, firearms, music, motorcycles AUDITORY EFFECTS OF NOISE EXPOSURE - Loss of hearing sensitivity • Tinnitus • Missing parts of conversation • Slower, inaccurate localization • Increased errors, safety mishaps Non-auditory effects of noise exposure - Raise blood pressure