Prevention
what are the 6 disciplines that make up CAOHC's council? - ANS-- audiologist
- occupational health nursing
- industrial hygiene
- occupational medicine
- otolaryngologist
- noise-control engineer
what can an occupational hearing conservationist (OHC) do? - ANS-- provide monitoring
audiometry
- must work under a professional supervisor (PS)
- cannot teach other OHC
- cannot interpret audiograms
what can a course director (CD) do? - ANS-- train OHCs
- must be from one of 6 disciplines that make up the council
what can a professional supervisor (PS) do? - ANS-- must be an audiologist, otolaryngologist, or
physician
- determines work-relatedness of hearing loss
what is NIHL defined as? - ANS-- an occupational disease or illness (not injury unless sudden
acoustic trauma)
- depends on the level of noise/duration of exposure/susceptibility of each worker
what is sociocusis? - ANS-recreational noise exposure (outside of the work environment)
what are the auditory effects of noise? - ANS-- hearing loss
- tinnitus
- hyperacusis
- communication interference
what are the non-auditory effects of noise? - ANS-- negative effects on job performance
- annoyance
- biologic stressor
what are the 7 components of a hearing conservation program? - ANS-- noise measurement
- noise control
- hearing protection
- audiometric monitoring
- worker training and motivation
, - recordkeeping
- program evaluation (optional)
what are the three approaches to noise control? - ANS-- engineering controls: eliminate the
source of noise; most effective
- controlling transmission or path of sound
- administrative controls: reducing noise source at receiver (rotating workers, etc.)
what are the pros and cons of in-house monitoring programs? - ANS-- pros: direct
communication with workers, ease of scheduling, fewer "no-shows", less expense, easy face to
face counseling
- cons: huge responsibility for the program, maybe too much responsibility
what are the pros and cons of mobile/off-site programs? - ANS-- pros: contracted out to
company with adequate resources, very efficient, experienced
- cons: less flexible scheduling, limited time for feedback/counseling
what are the pros and cons of manual audiometry? - ANS-- pros: low cost, easy to control
- cons: human error, longer to compute values, recording results by hand can also lead to errors
what are the pros and cons of microprocessor audiometers? - ANS-- pros: computerized,
determines thresholds automatically, can test multiple people at once(?)
- cons: harder to test difficult patients, less control, expensive, machine error
what are MPANLs? why are they important? - ANS-- maximum permissible ambient noise levels
what are the 3 different types of calibration? when should they be done? - ANS-- listening
check: daily, done with calibration, 10+ dB diff requires acoustic calibration
- daily biologic calibration: test someone with known stable thresholds
- acoustic calibration: done annually or to f/u failed biologic check
- exhaustive calibration: done if there are deviations of 15+ dB, at least every 2 years
what type of audiometry do we rely on to resolve "problem audiograms"? - ANS-manual
audiometry
what is the action level? - ANS-- 85 dBA
- if company meets or exceeds action level, HCP must be in place
- all workers exposed to 85 dB or above must be enrolled in HCP
what is the permissible exposure level? - ANS-- 90 dBA exposure over 8 hours = 100%
- dose at which intervention is required to protect workers
- use engineering or administrative controls
what are the 6 disciplines that make up CAOHC's council? - ANS-- audiologist
- occupational health nursing
- industrial hygiene
- occupational medicine
- otolaryngologist
- noise-control engineer
what can an occupational hearing conservationist (OHC) do? - ANS-- provide monitoring
audiometry
- must work under a professional supervisor (PS)
- cannot teach other OHC
- cannot interpret audiograms
what can a course director (CD) do? - ANS-- train OHCs
- must be from one of 6 disciplines that make up the council
what can a professional supervisor (PS) do? - ANS-- must be an audiologist, otolaryngologist, or
physician
- determines work-relatedness of hearing loss
what is NIHL defined as? - ANS-- an occupational disease or illness (not injury unless sudden
acoustic trauma)
- depends on the level of noise/duration of exposure/susceptibility of each worker
what is sociocusis? - ANS-recreational noise exposure (outside of the work environment)
what are the auditory effects of noise? - ANS-- hearing loss
- tinnitus
- hyperacusis
- communication interference
what are the non-auditory effects of noise? - ANS-- negative effects on job performance
- annoyance
- biologic stressor
what are the 7 components of a hearing conservation program? - ANS-- noise measurement
- noise control
- hearing protection
- audiometric monitoring
- worker training and motivation
, - recordkeeping
- program evaluation (optional)
what are the three approaches to noise control? - ANS-- engineering controls: eliminate the
source of noise; most effective
- controlling transmission or path of sound
- administrative controls: reducing noise source at receiver (rotating workers, etc.)
what are the pros and cons of in-house monitoring programs? - ANS-- pros: direct
communication with workers, ease of scheduling, fewer "no-shows", less expense, easy face to
face counseling
- cons: huge responsibility for the program, maybe too much responsibility
what are the pros and cons of mobile/off-site programs? - ANS-- pros: contracted out to
company with adequate resources, very efficient, experienced
- cons: less flexible scheduling, limited time for feedback/counseling
what are the pros and cons of manual audiometry? - ANS-- pros: low cost, easy to control
- cons: human error, longer to compute values, recording results by hand can also lead to errors
what are the pros and cons of microprocessor audiometers? - ANS-- pros: computerized,
determines thresholds automatically, can test multiple people at once(?)
- cons: harder to test difficult patients, less control, expensive, machine error
what are MPANLs? why are they important? - ANS-- maximum permissible ambient noise levels
what are the 3 different types of calibration? when should they be done? - ANS-- listening
check: daily, done with calibration, 10+ dB diff requires acoustic calibration
- daily biologic calibration: test someone with known stable thresholds
- acoustic calibration: done annually or to f/u failed biologic check
- exhaustive calibration: done if there are deviations of 15+ dB, at least every 2 years
what type of audiometry do we rely on to resolve "problem audiograms"? - ANS-manual
audiometry
what is the action level? - ANS-- 85 dBA
- if company meets or exceeds action level, HCP must be in place
- all workers exposed to 85 dB or above must be enrolled in HCP
what is the permissible exposure level? - ANS-- 90 dBA exposure over 8 hours = 100%
- dose at which intervention is required to protect workers
- use engineering or administrative controls
