CAOHC Study Guide UPDATED ACTUAL Questions and CORRECT Answers
22 - 28 million US workers exposed to harmful levels of
NIHL (Noise Induced Hearing Loss)
noise. Manufacturing accounts for most .
Noise exposure major cause of tinnitus.
is usually a high pitched sound that person hears, others
Tinnitus
usually cannot hear. Major warning sign of NIHL.
- hearing loss, high freq, usually bilateral, 1st seen at
3kHz-6kHz
- tinnitus
What are the auditory effects of noise (NIHL)? - communication interference, backgound noise in loud
room, causes diflculty hearing
- damage to Inner Ear/COCHLEA, permanent and pro-
gressive.
- effects job performance
- irritability
What are the non-auditory effects of noise? - trouble sleeping
- concentration
- increased BP & pulse.
Lasting effects of NIHL: High frequency hrg loss/damage
What are the lasting effects of NIHL (noise induced hear- to the Inner Ear- Cochlea. Usually has tinnitus, has difl-
ing loss) culty understanding speech especially in noisy situations,
social withdrawal, depression, effect on private life.
- appears somewhere between 3kHz and 6kHz
At which level(s) does NIHL (noise induced hearing loss) - you see a Noise "notch" on the audiogram and with
first appear? 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 noise "notch"
exposure?
, Council for Accreditation in Occupational Hearing Conser-
What is CAOHC?
vation formed in the mid 1960's.
- provides resources/guidance/training to OHCs (Occu-
pational Health Conservationist)
What is CAOHC PRIMARY role? - facilitates practice of hearing loss prevention through
standardized training
- provides training to CDs and PSs.
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;
Which organizations or disciplines are on the CAOHC
4. American Coll. of Occupational and Environmental
council?
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 -can do audiometric pure tone air conduction only
Role of Audiologist
Role of Nurse
- serves as PS
Role of Physician/Audologist - must supervise audio monitoring of HCP
- can also be the HCP Mgr but does not have to be
Role of Safety Engineer
Role of IH (Industrial Hearing)
Role of Management
22 - 28 million US workers exposed to harmful levels of
NIHL (Noise Induced Hearing Loss)
noise. Manufacturing accounts for most .
Noise exposure major cause of tinnitus.
is usually a high pitched sound that person hears, others
Tinnitus
usually cannot hear. Major warning sign of NIHL.
- hearing loss, high freq, usually bilateral, 1st seen at
3kHz-6kHz
- tinnitus
What are the auditory effects of noise (NIHL)? - communication interference, backgound noise in loud
room, causes diflculty hearing
- damage to Inner Ear/COCHLEA, permanent and pro-
gressive.
- effects job performance
- irritability
What are the non-auditory effects of noise? - trouble sleeping
- concentration
- increased BP & pulse.
Lasting effects of NIHL: High frequency hrg loss/damage
What are the lasting effects of NIHL (noise induced hear- to the Inner Ear- Cochlea. Usually has tinnitus, has difl-
ing loss) culty understanding speech especially in noisy situations,
social withdrawal, depression, effect on private life.
- appears somewhere between 3kHz and 6kHz
At which level(s) does NIHL (noise induced hearing loss) - you see a Noise "notch" on the audiogram and with
first appear? 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 noise "notch"
exposure?
, Council for Accreditation in Occupational Hearing Conser-
What is CAOHC?
vation formed in the mid 1960's.
- provides resources/guidance/training to OHCs (Occu-
pational Health Conservationist)
What is CAOHC PRIMARY role? - facilitates practice of hearing loss prevention through
standardized training
- provides training to CDs and PSs.
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;
Which organizations or disciplines are on the CAOHC
4. American Coll. of Occupational and Environmental
council?
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 -can do audiometric pure tone air conduction only
Role of Audiologist
Role of Nurse
- serves as PS
Role of Physician/Audologist - must supervise audio monitoring of HCP
- can also be the HCP Mgr but does not have to be
Role of Safety Engineer
Role of IH (Industrial Hearing)
Role of Management
