CAOHC Study Guide 2024 Q&A with A+ Graded

CAOHC Study Guide 2024 Q&A with A+ Graded NIHL (Noise Induced Hearing Loss) - CORRECT ANSWER-22 - 28 million US workers exposed to harmful levels of noise. Manufacturing accounts for most . Noise exposure - CORRECT ANSWER-major cause of tinnitus. Tinnitus - CORRECT ANSWER-is usually a high pitched sound that person hears, others usually cannot hear. Major warning sign of NIHL. What are the auditory effects of noise (NIHL)? - CORRECT ANSWER-- hearing loss, high freq, usually bilateral, 1st seen at 3kHz-6kHz - tinnitus - communication interference, backgound noise in loud room, causes difficulty hearing - damage to Inner Ear/COCHLEA, permanent and progressive. What are the non-auditory effects of noise? - CORRECT ANSWER-- effects job performance - irritability - trouble sleeping - concentration - increased BP & pulse. What are the lasting effects of NIHL (noise induced hearing loss) - CORRECT ANSWER-Lasting effects of NIHL: High frequency hrg loss/damage to the Inner EarCochlea. Usually has tinnitus, has difficulty understanding speech especially in noisy situations, social withdrawal, depression, effect on private life. At which level(s) does NIHL (noise induced hearing loss) first appear? - CORRECT ANSWER-- appears somewhere between 3kHz and 6kHz - you see a Noise "notch" on the audiogram and with further exposure - the notch deepens and widens because it progresses. What is seen on an audiogram between 3kHz and 6kHz that gets deeper and wider as it progresses due to further exposure? - CORRECT ANSWER-noise "notch" What is CAOHC? - CORRECT ANSWER-Council for Accreditation in Occupational Hearing Conservation formed in the mid 1960's. What is CAOHC PRIMARY role? - CORRECT ANSWER-- provides resources/guidance/training to OHCs (Occupational Health Conservationist) - facilitates practice of hearing loss prevention through sta