CAOHC CERTIFICATION EXAM WITH
VERIFIED ANSWERS
What ndoes nCAOHC nstand nfor? n- ncorrect nanswers n-Council nfor nAccreditation nin
nOccupational nHearing nConservation
Who nis nthe ncertification nbody nfor? n- ncorrect nanswers n-Occupational nHearing
nConservationist n(OHCs)
Course nDirectors n(CDs) n
Professional nSupervisors n(PSs)
,What nis nCAOHCs nmission? n- ncorrect nanswers n-To npromote nhearing nloss
nprevention nby nenhancing nthe nquality nof noccupational nhearing nloss nprevention
npractices, nwith na nfocus non:
Providing nOHCs: nresources nand nguidance nto nfacilitate nthe npractice nof nhearing
nloss nprevention nthrough nstandardized ntraining nand ncredentialing
Providing nCDs: ntraining nresources, ncurriculum noversight, nand nprofessional nsupport
nto nassist nin nensuring nthe ncompetence nof nOHC's
What ndoes nCAOHC ndo? n- ncorrect nanswers n-Promote nBEST nPRACTICES nin
noccupational nhearing nconservation
What nis na nCAOHC ncertified nstudent? n- ncorrect nanswers n-Certified noccupational
nhearing nconservationist n(COHC)
How nlong ndoes na nCOHC ncertification nlast? n- ncorrect nanswers n-5 nyears
What nare nthe ntwo neffects nof nnoise? n- ncorrect nanswers n-Auditory
Non-auditory
Defined nauditory n- ncorrect nanswers n-Direct neffects nto nthe near
What nare nsome nexamples nof nauditory neffects? n- ncorrect nanswers n-1. nNoise
ninduced nhearing nloss n(NIHL)
2. nTinnitus n(ringing nin nthe near)
3. nHyperacusis n(high nsensitivity nto nnoise; nlower ntolerance nfor nloud nsounds)
4. nCommunication ninterference
Define nnon-auditory n- ncorrect nanswers n-Other nphysiological nand npsychological
neffects
What nare nsome nexamples nof nnon-auditory neffects? n- ncorrect nanswers n-1.
nHypertension
2. nCognitive ndecline
3. nStress
4. nIsolation, nSocial nwithdrawal, nfrustration
, 5. nSleep ndisturbances
6. nDegraded nwork nperformance
What nare nsome nearly nsigns nof nnoise ninduced nhearing nloss? n- ncorrect nanswers n-
1. nDifficulty nunderstanding nconversations n(particularly nin nbackground nnoise)
2. nRinging nor nbuzzing nin nthe nears n(tinnitus)
What nare nsome ncharacteristics nof nnoise ninduced nhearing nloss? n- ncorrect
nanswers n-1. nUsually nbilateral, nalways nsensorineural n
2. nTypically naffects nhigh nfrequencies nfirst; naudiometric n"notch" nat n4000Hz
3. nPrimary ndeterminers nof ndamage nare nduration nand nintensity nof nsound
4. nTemporary nhearing nthreshold nshifts n(TTS) nbecome npermanent nthreshold nshifts
n(PTS)
Name ntwo nsources nof nhazardous nnoise n- ncorrect nanswers n-1. nOccupational
nnoise nexposure
2. nNon-occupational nnoise nexposure
What nis nthe nmost ncommon noccupational nillness nand nsecond nmost nself nreported
noccupational nillness nfor nAmerican nworkers? n- ncorrect nanswers n-Noise ninduced
nhearing nloss n(NIHL)
What noccupation nhas nthe nhighest npercentage nof nnoise ninduced nhearing nloss? n-
ncorrect nanswers n-Manufacturing
Approximately nhow nmany npeople nare nexposed nto nhazardous nnoise nin nthe
nworkplace? n- ncorrect nanswers n-30 nmillion npeople
What noccupation nhas nthe nhighest nprevalence nof nexposure nto nnoise? n- ncorrect
nanswers n-Mining
What nare nthe ntwo nparts nof nthe nouter near? n- ncorrect nanswers n-1. nAuricle n(pinna)
2. nExternal nauditory nmeatus n(Ear ncanal)
What nare nthe nnames nof nthe nthree nbones nin nthe nmiddle near? n- ncorrect nanswers
n-1. nMalleus n(hammer)
2. nIncus n(anvil)
VERIFIED ANSWERS
What ndoes nCAOHC nstand nfor? n- ncorrect nanswers n-Council nfor nAccreditation nin
nOccupational nHearing nConservation
Who nis nthe ncertification nbody nfor? n- ncorrect nanswers n-Occupational nHearing
nConservationist n(OHCs)
Course nDirectors n(CDs) n
Professional nSupervisors n(PSs)
,What nis nCAOHCs nmission? n- ncorrect nanswers n-To npromote nhearing nloss
nprevention nby nenhancing nthe nquality nof noccupational nhearing nloss nprevention
npractices, nwith na nfocus non:
Providing nOHCs: nresources nand nguidance nto nfacilitate nthe npractice nof nhearing
nloss nprevention nthrough nstandardized ntraining nand ncredentialing
Providing nCDs: ntraining nresources, ncurriculum noversight, nand nprofessional nsupport
nto nassist nin nensuring nthe ncompetence nof nOHC's
What ndoes nCAOHC ndo? n- ncorrect nanswers n-Promote nBEST nPRACTICES nin
noccupational nhearing nconservation
What nis na nCAOHC ncertified nstudent? n- ncorrect nanswers n-Certified noccupational
nhearing nconservationist n(COHC)
How nlong ndoes na nCOHC ncertification nlast? n- ncorrect nanswers n-5 nyears
What nare nthe ntwo neffects nof nnoise? n- ncorrect nanswers n-Auditory
Non-auditory
Defined nauditory n- ncorrect nanswers n-Direct neffects nto nthe near
What nare nsome nexamples nof nauditory neffects? n- ncorrect nanswers n-1. nNoise
ninduced nhearing nloss n(NIHL)
2. nTinnitus n(ringing nin nthe near)
3. nHyperacusis n(high nsensitivity nto nnoise; nlower ntolerance nfor nloud nsounds)
4. nCommunication ninterference
Define nnon-auditory n- ncorrect nanswers n-Other nphysiological nand npsychological
neffects
What nare nsome nexamples nof nnon-auditory neffects? n- ncorrect nanswers n-1.
nHypertension
2. nCognitive ndecline
3. nStress
4. nIsolation, nSocial nwithdrawal, nfrustration
, 5. nSleep ndisturbances
6. nDegraded nwork nperformance
What nare nsome nearly nsigns nof nnoise ninduced nhearing nloss? n- ncorrect nanswers n-
1. nDifficulty nunderstanding nconversations n(particularly nin nbackground nnoise)
2. nRinging nor nbuzzing nin nthe nears n(tinnitus)
What nare nsome ncharacteristics nof nnoise ninduced nhearing nloss? n- ncorrect
nanswers n-1. nUsually nbilateral, nalways nsensorineural n
2. nTypically naffects nhigh nfrequencies nfirst; naudiometric n"notch" nat n4000Hz
3. nPrimary ndeterminers nof ndamage nare nduration nand nintensity nof nsound
4. nTemporary nhearing nthreshold nshifts n(TTS) nbecome npermanent nthreshold nshifts
n(PTS)
Name ntwo nsources nof nhazardous nnoise n- ncorrect nanswers n-1. nOccupational
nnoise nexposure
2. nNon-occupational nnoise nexposure
What nis nthe nmost ncommon noccupational nillness nand nsecond nmost nself nreported
noccupational nillness nfor nAmerican nworkers? n- ncorrect nanswers n-Noise ninduced
nhearing nloss n(NIHL)
What noccupation nhas nthe nhighest npercentage nof nnoise ninduced nhearing nloss? n-
ncorrect nanswers n-Manufacturing
Approximately nhow nmany npeople nare nexposed nto nhazardous nnoise nin nthe
nworkplace? n- ncorrect nanswers n-30 nmillion npeople
What noccupation nhas nthe nhighest nprevalence nof nexposure nto nnoise? n- ncorrect
nanswers n-Mining
What nare nthe ntwo nparts nof nthe nouter near? n- ncorrect nanswers n-1. nAuricle n(pinna)
2. nExternal nauditory nmeatus n(Ear ncanal)
What nare nthe nnames nof nthe nthree nbones nin nthe nmiddle near? n- ncorrect nanswers
n-1. nMalleus n(hammer)
2. nIncus n(anvil)
