CAOHC Certification UPDATED ACTUAL Questions and CORRECT Answers
Council for Accreditation in Occupational Hearing Conser-
What does CAOHC stand for?
vation
Occupational Hearing Conservationist (OHCs)
Who is the certification body for? Course Directors (CDs)
Professional Supervisors (PSs)
To promote hearing loss prevention by enhancing the
quality of occupational hearing loss prevention practices,
with a focus on:
Providing OHCs: resources and guidance to facilitate the
What is CAOHCs mission? practice of hearing loss prevention through standardized
training and credentialing
Providing CDs: training resources, curriculum oversight,
and professional support to assist in ensuring the com-
petence of OHC's
Promote BEST PRACTICES in occupational hearing conser-
What does CAOHC do?
vation
What is a CAOHC certified student? Certified occupational hearing conservationist (COHC)
How long does a COHC certification last? 5 years
Auditory
What are the two effects of noise?
Non-auditory
Defined auditory Direct effects to the ear
1. Noise induced hearing loss (NIHL)
What are some examples of auditory effects?
2. Tinnitus (ringing in the ear)
, 3. Hyperacusis (high sensitivity to noise; lower tolerance
for loud sounds)
4. Communication interference
Define non-auditory Other physiological and psychological effects
1. Hypertension
2. Cognitive decline
3. Stress
What are some examples of non-auditory effects?
4. Isolation, Social withdrawal, frustration
5. Sleep disturbances
6. Degraded work performance
1. Diflculty understanding conversations (particularly in
background noise)
What are some early signs of noise induced hearing loss?
2. Ringing or buzzing in the ears (tinnitus)
1. Usually bilateral, always sensorineural
2. Typically affects high frequencies first; audiometric
"notch" at 4000Hz
What are some characteristics of noise induced hearing
loss? 3. Primary determiners of damage are duration and inten-
sity of sound
4. Temporary hearing threshold shifts (TTS) become per-
manent threshold shifts (PTS)
Name two sources of hazardous noise
, 1. Occupational noise exposure
2. Non-occupational noise exposure
What is the most common occupational illness and sec-
ond most self reported occupational illness for American Noise induced hearing loss (NIHL)
workers?
What occupation has the highest percentage of noise
Manufacturing
induced hearing loss?
Approximately how many people are exposed to haz-
30 million people
ardous noise in the workplace?
What occupation has the highest prevalence of exposure
Mining
to noise?
1. Auricle (pinna)
What are the two parts of the outer ear?
2. External auditory meatus (Ear canal)
1. Malleus (hammer)
What are the names of the three bones in the middle ear? 2. Incus (anvil)
3. Stapes (stirrup)
What are the smallest bones in the human body? Ossicles
1. Cochlea (hearing)
What are the two primary structures in the inner ear?
2. Vestibular System (balance)
What is the vestibular system attached to? The ear
1. Conductive
What are the three types of hearing loss? 2. Sensorineural
3. Mixed
Council for Accreditation in Occupational Hearing Conser-
What does CAOHC stand for?
vation
Occupational Hearing Conservationist (OHCs)
Who is the certification body for? Course Directors (CDs)
Professional Supervisors (PSs)
To promote hearing loss prevention by enhancing the
quality of occupational hearing loss prevention practices,
with a focus on:
Providing OHCs: resources and guidance to facilitate the
What is CAOHCs mission? practice of hearing loss prevention through standardized
training and credentialing
Providing CDs: training resources, curriculum oversight,
and professional support to assist in ensuring the com-
petence of OHC's
Promote BEST PRACTICES in occupational hearing conser-
What does CAOHC do?
vation
What is a CAOHC certified student? Certified occupational hearing conservationist (COHC)
How long does a COHC certification last? 5 years
Auditory
What are the two effects of noise?
Non-auditory
Defined auditory Direct effects to the ear
1. Noise induced hearing loss (NIHL)
What are some examples of auditory effects?
2. Tinnitus (ringing in the ear)
, 3. Hyperacusis (high sensitivity to noise; lower tolerance
for loud sounds)
4. Communication interference
Define non-auditory Other physiological and psychological effects
1. Hypertension
2. Cognitive decline
3. Stress
What are some examples of non-auditory effects?
4. Isolation, Social withdrawal, frustration
5. Sleep disturbances
6. Degraded work performance
1. Diflculty understanding conversations (particularly in
background noise)
What are some early signs of noise induced hearing loss?
2. Ringing or buzzing in the ears (tinnitus)
1. Usually bilateral, always sensorineural
2. Typically affects high frequencies first; audiometric
"notch" at 4000Hz
What are some characteristics of noise induced hearing
loss? 3. Primary determiners of damage are duration and inten-
sity of sound
4. Temporary hearing threshold shifts (TTS) become per-
manent threshold shifts (PTS)
Name two sources of hazardous noise
, 1. Occupational noise exposure
2. Non-occupational noise exposure
What is the most common occupational illness and sec-
ond most self reported occupational illness for American Noise induced hearing loss (NIHL)
workers?
What occupation has the highest percentage of noise
Manufacturing
induced hearing loss?
Approximately how many people are exposed to haz-
30 million people
ardous noise in the workplace?
What occupation has the highest prevalence of exposure
Mining
to noise?
1. Auricle (pinna)
What are the two parts of the outer ear?
2. External auditory meatus (Ear canal)
1. Malleus (hammer)
What are the names of the three bones in the middle ear? 2. Incus (anvil)
3. Stapes (stirrup)
What are the smallest bones in the human body? Ossicles
1. Cochlea (hearing)
What are the two primary structures in the inner ear?
2. Vestibular System (balance)
What is the vestibular system attached to? The ear
1. Conductive
What are the three types of hearing loss? 2. Sensorineural
3. Mixed
