CAOHC Study Guide Accurate 100%
NIHL (Noise Induced Hearing Loss) - ANSWER 22 - 28 million US workers exposed to
harmful levels of noise. Manufacturing accounts for most .
Noise exposure - ANSWER major cause of tinnitus.
Tinnitus - ANSWER is usually a high pitched sound that person hears, others usually
cannot hear. Major warning sign of NIHL.
What are the auditory effects of noise (NIHL)? - ANSWER - hearing loss, high freq,
usually bilateral, 1st seen at 3kHz-6kHz
- tinnitus
- communication interference, backgound noise in loud room, causes difficulty hearing
- damage to Inner Ear/COCHLEA, permanent and progressive.
What are the non-auditory effects of noise? - ANSWER - effects job performance
- irritability
- trouble sleeping
- concentration
- increased BP & pulse.
What are the lasting effects of NIHL (noise induced hearing loss) - ANSWER Lasting
effects of NIHL: High frequency hrg loss/damage to the Inner Ear- Cochlea. Usually has
tinnitus, has difficulty understanding speech especially in noisy situations, social
withdrawal, depression, effect on private life.
At which level(s) does NIHL (noise induced hearing loss) first appear? - ANSWER -
appears somewhere between 3kHz and 6kHz
- you see a Noise "notch" on the audiogram and with further exposure
- the notch deepens and widens because it progresses.
What is seen on an audiogram between 3kHz and 6kHz that gets deeper and wider as it
progresses due to further exposure? - ANSWER noise "notch"
What is CAOHC? - ANSWER Council for Accreditation in Occupational Hearing
Conservation formed in the mid 1960's.
What is CAOHC PRIMARY role? - ANSWER - provides resources/guidance/training to
OHCs (Occupational Health Conservationist)
- facilitates practice of hearing loss prevention through standardized training
- provides training to CDs and PSs.
Which organizations or disciplines are on the CAOHC council? - ANSWER CAOHC
consists of 2 Reps from each organization;
, -There are 9 organizations:
1. American Academy of Otolarygology-Head and Neck Surgery
2. American Academy of Audiology;
3. American Association of OHNs;
4. American Coll. of Occupational and Environmental Medicine;
5. American Industrial Hygiene;
6. American Society of Safety Engineers;
7. American Speech-Language-Hearing Association;
8. Institute of Noise Control Engineering;
9. Military Audiology Association
Role of OHC - ANSWER -can do audiometric pure tone air conduction only
Role of Audiologist - ANSWER
Role of Nurse - ANSWER
Role of Physician/Audologist - ANSWER - serves as PS
- must supervise audio monitoring of HCP
- can also be the HCP Mgr but does not have to be
Role of Safety Engineer - ANSWER
Role of IH (Industrial Hearing) - ANSWER
Role of Management - ANSWER
What is the Hearing Conservation Law/Amendment - ANSWER The Regulation is CFR
1910.95.
NIOSH (National Institute of Safety and Health) - ANSWER - determines BEST
PRACTICE with no consideration to cost
OSHA (Occupational Safety and Health Administration) - ANSWER - writes regulations
- enforces & issues citation
- considers economic impact to companies
OHC (Occupational Health Conservationist) - ANSWER - must follow the most
STRINGENT standard of the Hearing Conservation Law
- According to OSHA, takes care of RECORDKEEPING
What is PEL? - ANSWER - any sound above 90 dBA 8 hour TWA
- needs HP (Hearing Protection)
What is the Action Level? - ANSWER - 85dBA or greater 8 hour TWA
- requires employer to start HCP and make HPDs available.
NIHL (Noise Induced Hearing Loss) - ANSWER 22 - 28 million US workers exposed to
harmful levels of noise. Manufacturing accounts for most .
Noise exposure - ANSWER major cause of tinnitus.
Tinnitus - ANSWER is usually a high pitched sound that person hears, others usually
cannot hear. Major warning sign of NIHL.
What are the auditory effects of noise (NIHL)? - ANSWER - hearing loss, high freq,
usually bilateral, 1st seen at 3kHz-6kHz
- tinnitus
- communication interference, backgound noise in loud room, causes difficulty hearing
- damage to Inner Ear/COCHLEA, permanent and progressive.
What are the non-auditory effects of noise? - ANSWER - effects job performance
- irritability
- trouble sleeping
- concentration
- increased BP & pulse.
What are the lasting effects of NIHL (noise induced hearing loss) - ANSWER Lasting
effects of NIHL: High frequency hrg loss/damage to the Inner Ear- Cochlea. Usually has
tinnitus, has difficulty understanding speech especially in noisy situations, social
withdrawal, depression, effect on private life.
At which level(s) does NIHL (noise induced hearing loss) first appear? - ANSWER -
appears somewhere between 3kHz and 6kHz
- you see a Noise "notch" on the audiogram and with further exposure
- the notch deepens and widens because it progresses.
What is seen on an audiogram between 3kHz and 6kHz that gets deeper and wider as it
progresses due to further exposure? - ANSWER noise "notch"
What is CAOHC? - ANSWER Council for Accreditation in Occupational Hearing
Conservation formed in the mid 1960's.
What is CAOHC PRIMARY role? - ANSWER - provides resources/guidance/training to
OHCs (Occupational Health Conservationist)
- facilitates practice of hearing loss prevention through standardized training
- provides training to CDs and PSs.
Which organizations or disciplines are on the CAOHC council? - ANSWER CAOHC
consists of 2 Reps from each organization;
, -There are 9 organizations:
1. American Academy of Otolarygology-Head and Neck Surgery
2. American Academy of Audiology;
3. American Association of OHNs;
4. American Coll. of Occupational and Environmental Medicine;
5. American Industrial Hygiene;
6. American Society of Safety Engineers;
7. American Speech-Language-Hearing Association;
8. Institute of Noise Control Engineering;
9. Military Audiology Association
Role of OHC - ANSWER -can do audiometric pure tone air conduction only
Role of Audiologist - ANSWER
Role of Nurse - ANSWER
Role of Physician/Audologist - ANSWER - serves as PS
- must supervise audio monitoring of HCP
- can also be the HCP Mgr but does not have to be
Role of Safety Engineer - ANSWER
Role of IH (Industrial Hearing) - ANSWER
Role of Management - ANSWER
What is the Hearing Conservation Law/Amendment - ANSWER The Regulation is CFR
1910.95.
NIOSH (National Institute of Safety and Health) - ANSWER - determines BEST
PRACTICE with no consideration to cost
OSHA (Occupational Safety and Health Administration) - ANSWER - writes regulations
- enforces & issues citation
- considers economic impact to companies
OHC (Occupational Health Conservationist) - ANSWER - must follow the most
STRINGENT standard of the Hearing Conservation Law
- According to OSHA, takes care of RECORDKEEPING
What is PEL? - ANSWER - any sound above 90 dBA 8 hour TWA
- needs HP (Hearing Protection)
What is the Action Level? - ANSWER - 85dBA or greater 8 hour TWA
- requires employer to start HCP and make HPDs available.
