OHC
- audiology
- industrial hygiene
- noise control engineer
- occupational health nursing
- occupational medicine
- otolaryngology - ANS-6 disciplines that make up CAOHC council
- provide monitoring audiometry
- work under professional supervisor (PS)
- trained by course director (CD)
- cannot teach other OHC
- cannot interpret audiograms
- cannot do audios for other reasons - ANS-what can/cannot OHC do
- conducts training of OHCs
- has to be from one of 6 areas and maintain professional credentials throughout 5 year cert
period - ANS-what is the course director (CD)
- audiologist, otolaryngologist, physician (MD/DO)
- determines HL that is work related
- supervise OHC - ANS-what is the professional supervisor (PS)
OSHA & MSHA - ANS-what groups mention CAOHC cert as best evidence that technician is
qualified to do audio
occupational disease or illness (unless sudden acoustic trauma) - ANS-how does OSHA
define/classify NIHL
- level of exposure
- duration of exposure
- susceptibility of worker (genetics) - ANS-what does NIHL depend on
- noise measurement
- noise control
- worker training/motivation
- hearing protection
- audiometric monitoring
- record-keeping
- program evaluation (not required by OSHA) - ANS-major components of hearing conservation
program (HCP)
, - engineering controls
- eliminate source of noise
(can also control transmission/administer controls) - ANS-what is the most effective way to
approach noise control
- auditory: HL, tinnitus, sociocusis, hyperacusis, communication interference
- non-auditory: stress, mental health, high blood pressure, annoyance - ANS-what are
auditory/non-auditory effects of noise
- earphones are calibrated w audiometer and cannot be switched - ANS-calibrating earphones
advantage: low cost, easy control
disadvantage: human error, longer - ANS-advantage/disadvantage to manual audiometer
- manual audiometry - ANS-how to resolve problem audiograms
check once a year (mobile checked daily or once for each site) - ANS-what does NIOSH
recommend for monitoring environments & ambient noise standards
Maximum Permissible Ambient Noise Levels
- specified in terms of octave band SPL
- monitors ambient noise/background noise when testing - ANS-what is MPANLs
- biologic (every day)
- acoustic (when 10 dB or more diff in biologic check or annually)
- exhaustive (when 15dB or greater or at-least every 2 years for OSHA & annually for NIOSH) -
ANS-different types of calibration
- in house: adv = direct communication w workers, easy to schedule, less expensive bc travel;
dis = responsibilities
- off-site: adv = if workforce is large can contract for that & very efficient and experienced; dis =
harder to schedule & limited time for ind feedack/counseling - ANS-pros/cons for in-house
monitoring & off-site monitoring
manual: adv = low cost & easy to use; dis = human error & time
microprocessor: adv = can do a lot; dis = expensive - ANS-pros/cons of manual vs.
microprocessor audiometer
- otitis media, otitis externa, foreign object, perf, collapsing ear canal, cholesteatoma,
otosclerosis - ANS-examples of conductive disorders
- NIHL, presbycusis, disease & ototoxins, meniere's, acoustic neuroma - ANS-examples of
SNHL disorders
- audiology
- industrial hygiene
- noise control engineer
- occupational health nursing
- occupational medicine
- otolaryngology - ANS-6 disciplines that make up CAOHC council
- provide monitoring audiometry
- work under professional supervisor (PS)
- trained by course director (CD)
- cannot teach other OHC
- cannot interpret audiograms
- cannot do audios for other reasons - ANS-what can/cannot OHC do
- conducts training of OHCs
- has to be from one of 6 areas and maintain professional credentials throughout 5 year cert
period - ANS-what is the course director (CD)
- audiologist, otolaryngologist, physician (MD/DO)
- determines HL that is work related
- supervise OHC - ANS-what is the professional supervisor (PS)
OSHA & MSHA - ANS-what groups mention CAOHC cert as best evidence that technician is
qualified to do audio
occupational disease or illness (unless sudden acoustic trauma) - ANS-how does OSHA
define/classify NIHL
- level of exposure
- duration of exposure
- susceptibility of worker (genetics) - ANS-what does NIHL depend on
- noise measurement
- noise control
- worker training/motivation
- hearing protection
- audiometric monitoring
- record-keeping
- program evaluation (not required by OSHA) - ANS-major components of hearing conservation
program (HCP)
, - engineering controls
- eliminate source of noise
(can also control transmission/administer controls) - ANS-what is the most effective way to
approach noise control
- auditory: HL, tinnitus, sociocusis, hyperacusis, communication interference
- non-auditory: stress, mental health, high blood pressure, annoyance - ANS-what are
auditory/non-auditory effects of noise
- earphones are calibrated w audiometer and cannot be switched - ANS-calibrating earphones
advantage: low cost, easy control
disadvantage: human error, longer - ANS-advantage/disadvantage to manual audiometer
- manual audiometry - ANS-how to resolve problem audiograms
check once a year (mobile checked daily or once for each site) - ANS-what does NIOSH
recommend for monitoring environments & ambient noise standards
Maximum Permissible Ambient Noise Levels
- specified in terms of octave band SPL
- monitors ambient noise/background noise when testing - ANS-what is MPANLs
- biologic (every day)
- acoustic (when 10 dB or more diff in biologic check or annually)
- exhaustive (when 15dB or greater or at-least every 2 years for OSHA & annually for NIOSH) -
ANS-different types of calibration
- in house: adv = direct communication w workers, easy to schedule, less expensive bc travel;
dis = responsibilities
- off-site: adv = if workforce is large can contract for that & very efficient and experienced; dis =
harder to schedule & limited time for ind feedack/counseling - ANS-pros/cons for in-house
monitoring & off-site monitoring
manual: adv = low cost & easy to use; dis = human error & time
microprocessor: adv = can do a lot; dis = expensive - ANS-pros/cons of manual vs.
microprocessor audiometer
- otitis media, otitis externa, foreign object, perf, collapsing ear canal, cholesteatoma,
otosclerosis - ANS-examples of conductive disorders
- NIHL, presbycusis, disease & ototoxins, meniere's, acoustic neuroma - ANS-examples of
SNHL disorders
