CAOHC COMPREHENSIVE EXAM
QUESTIONS AND CORRECT ANSWERS
STUDY GUIDE
●● Occupational noise sources
Answer: Agriculture, mining, railroads
• Manufacturing - largest hazardous noise-exposed population
• Machinery, weapons, vehicles, tools, equipment
●● Noise-Induced Illness:
Answer: hearing loss and tinnitus
Occurs gradually, over time, from repeated exposures
●● Noise-Induced Injury:
Answer: hearing loss and tinnitus
Occurs from one significant exposure or event
●● Recreational noise sources
Answer: Lawn care, power tools, equipment, firearms, music,
motorcycles
,●● AUDITORY EFFECTS OF NOISE EXPOSURE
Answer: Loss of hearing sensitivity
• Tinnitus
• Missing parts of conversation
• Slower, inaccurate localization
• Increased errors, safety mishaps
●● Non-auditory effects of noise exposure
Answer: Raise blood pressure
• Raise heart rate
• Increase stress hormone levels
• Disrupt healthy sleep patterns
• Result in possible reassignment to a different job
• Result in embarrassment, frustration, and social withdrawal
●● 4 P'S OF NOISE-INDUCED HEARING LOSS (NIHL)
Answer: 1)Painless
2) Progressive
3) Permanent
4) Preventable
,●● Purpose of hearing conservation program
Answer: • Prevent occupation-related NIHL
• Job retention
• Reduce costs of hearing loss: > $240 million per year
• Promote healthy hearing and quality of life
●● HCP major elements
Answer: - noise hazard assesment
- noise controls
- audiometric monitoring
-hearing protection devices
-hearing conversation education
-recordkeeping
-program evaluation
●● CAOHC MISSION
Answer: Advancing best practices in occupational hearing conservation
worldwide, through credentialing, standards, education, and advocacy.
●● CAOHC VISION
Answer: A world without occupational hearing loss
, ●● engineering controls
Answer: primary means to reduce or control noise, dampen, enclose, or
isolate noise
- use HOD obly after engeneering controls prove unfeasible
●● administrative controls
Answer: policies and procedures implemented to reduce noise exposure
-standard operating proceedures (shift rotation, time in noise limitations)
●● VA COHC scope of practice
Answer: In accordance with VHA DIRECTIVE 1170.02
Checks and calibration of audiometric instrumentation
• Otoscopic screening and pure-tone air conduction threshold testing, for
the purpose of a hearing conservation program • Otoscopy and pure-tone
air conduction threshold testing without interpretation for established
patients
• Proper fitting and training of various personal hearing protection
devices
• Basic counseling of employees concerning hearing conservation test
results and employee referral
●● sound
QUESTIONS AND CORRECT ANSWERS
STUDY GUIDE
●● Occupational noise sources
Answer: Agriculture, mining, railroads
• Manufacturing - largest hazardous noise-exposed population
• Machinery, weapons, vehicles, tools, equipment
●● Noise-Induced Illness:
Answer: hearing loss and tinnitus
Occurs gradually, over time, from repeated exposures
●● Noise-Induced Injury:
Answer: hearing loss and tinnitus
Occurs from one significant exposure or event
●● Recreational noise sources
Answer: Lawn care, power tools, equipment, firearms, music,
motorcycles
,●● AUDITORY EFFECTS OF NOISE EXPOSURE
Answer: Loss of hearing sensitivity
• Tinnitus
• Missing parts of conversation
• Slower, inaccurate localization
• Increased errors, safety mishaps
●● Non-auditory effects of noise exposure
Answer: Raise blood pressure
• Raise heart rate
• Increase stress hormone levels
• Disrupt healthy sleep patterns
• Result in possible reassignment to a different job
• Result in embarrassment, frustration, and social withdrawal
●● 4 P'S OF NOISE-INDUCED HEARING LOSS (NIHL)
Answer: 1)Painless
2) Progressive
3) Permanent
4) Preventable
,●● Purpose of hearing conservation program
Answer: • Prevent occupation-related NIHL
• Job retention
• Reduce costs of hearing loss: > $240 million per year
• Promote healthy hearing and quality of life
●● HCP major elements
Answer: - noise hazard assesment
- noise controls
- audiometric monitoring
-hearing protection devices
-hearing conversation education
-recordkeeping
-program evaluation
●● CAOHC MISSION
Answer: Advancing best practices in occupational hearing conservation
worldwide, through credentialing, standards, education, and advocacy.
●● CAOHC VISION
Answer: A world without occupational hearing loss
, ●● engineering controls
Answer: primary means to reduce or control noise, dampen, enclose, or
isolate noise
- use HOD obly after engeneering controls prove unfeasible
●● administrative controls
Answer: policies and procedures implemented to reduce noise exposure
-standard operating proceedures (shift rotation, time in noise limitations)
●● VA COHC scope of practice
Answer: In accordance with VHA DIRECTIVE 1170.02
Checks and calibration of audiometric instrumentation
• Otoscopic screening and pure-tone air conduction threshold testing, for
the purpose of a hearing conservation program • Otoscopy and pure-tone
air conduction threshold testing without interpretation for established
patients
• Proper fitting and training of various personal hearing protection
devices
• Basic counseling of employees concerning hearing conservation test
results and employee referral
●● sound
