CAOHC TEST QUESTIONS AND ANSWERS

What is the purpose of the OHC? - Answer- Providing resources and guidance to facilitate the practice of hearing loss prevention through standardized training and credentialing What is the difference between the requiremtns of OSHA and the recommendations of NIOSH? - Answer- NIOSH refers to research and recoomendations. OSHA regulates and implements. What are examples of auditory effects on hearing and damage risks? - Answer- Tinnitus and hearing loss What are non auditory effects on hearing and damage risks? - Answer- Stress, high blood pressure What are potential sources of hazardous noise in occupational work settings? - Answer- Machinery, constructino, railoroads and equipment, mining, manufacturing, farming, professional musician What are potential sources of hazardous noise in non occupational work settings? - Answer- Motorcycles, sporting guns, carpentry equipment, lawn equipment, personal listening devices What are some of the lasting effects of noise induced hearing loss? - Answer- Social withdrawal, frustration, anger, and effects on private life What are the "do's" of an OHC (hearing tech)? - Answer- Education, fitting hearing protection, hearing test, and counciling What are the don'ts of an OHC (hearing tech)? - Answer- Diagnose, supervise Who can be Professional Supervisors? - Answer- Audiologists and physicians How many workers are exposed to hazardous noise on the job? - Answer- 22 million plus What occupational population is most at risk for noise induced hearing loss which highest amount of claims? - Answer- Manufacturing accounts for approximately 14% of U.S workforce but accounts for approximately 80% of incidence of NIHL. Collects sound waves, localizes sounds waves, protects middle ear components and provides resonate amplication is the function of what part of the ear? - Answer- Outer ear Acoustic transformer, impedance matching system, provides pressue equalization, and protects the inner ear is the function of what part of the ear? - Answer- Middle ear Provides intensity, frequency and temporal coding that is relayed via the auditory nerve for further processing is the function of what part of the ear? - Answer- Inner ear An early stage indication of noise induced hearing loss is identified typically at which frequencies on an audiogram? - Answer- 3-6 kHz What is a general rule of conductive hearing loss? - Answer- Flat and often worse at low frequencies What would be an indication of an advanced stage noise induced hearing loss? -