CAOHC Study Guide UPDATED ACTUAL Questions and CORRECT Answers
What is CAOHC Certification Council
-Sets standards and approves OHC courses.
-Certifies OHC's, CDs and PSs.
-Conducts training Courses Directors (CDs) and Profes-
What does CAOHC do?
sional Supervisors (PSs)
-Publishes resource materials and videos to assist person-
nel involved in HCPs.
-To advance best practice in occupational hearing conser-
vation.
CAOHC Mission -Establish educational standards for hearing loss preven-
tion practitioners
- Establish best-practice performance criteria for HLPP.
- Certification valid for 5 years
CAOHC Certification
- Ensures uniform standards of practice.
- Noise induced hearing loss (NIHL)
Auditory - Tinnitus
- Hyperacusis (Hypersensitivity to sound)
-Hypertension
- Isolation
Non-Auditory
- Sleep disturbances
- Degraded work performance
- Group activities aren't as enjoyable
- People "talk down" to hearing impaired
- Increased stress and fatigue
- Confusion and impatience
Effects of Hearing Loss
- Loss of self-confidence
- Less chance of promotion
- Family and work life are disrupted
- Other associated co-morbidities
Early Signs of NIHL
, - Diflculty understanding conversations (Particularly in
background noise)
- Ringing or buzzing in the ears (Tinnitus)
- Usually bilateral, Always sensorineaural
- Typically affects high frequencies first; Audiometric
"notch" at 4000 Hz
Characteristics of NIHL - Primary determiners of damage are duration and in-
tencity of sound.
- Temporary hearing threshold shifts (TTS)
- Permanent threshold shifts (PTS)
- Occupational noise exposure
Hazardous Noise Sources
- Non-occupational noise exposure
- Manufacturing
- 30 Million people are exposed to hazardous noise in the
Occupational NIHL workplace with another 9 million exposed to ototoxins.
- Manufacturing and utilities, agriculture, mining, con-
struction, transportation, and military.
- Auricle (pinna)
Outer Ear
- External Auditory Meatus (canal)
Normal Tympanic Membrane (Ear Drum) Forms boundary between outer and middle ear.
A- Melleus
B- Incus
Structures of the Middle Ear C- Stapes
- Ossicles- The smallest bone in the body
- Footplate of the stapes enters oval window.
- Hearing- Cochlea
Inner Ear - Balance- Vestibular System
- Round Window
2/9
What is CAOHC Certification Council
-Sets standards and approves OHC courses.
-Certifies OHC's, CDs and PSs.
-Conducts training Courses Directors (CDs) and Profes-
What does CAOHC do?
sional Supervisors (PSs)
-Publishes resource materials and videos to assist person-
nel involved in HCPs.
-To advance best practice in occupational hearing conser-
vation.
CAOHC Mission -Establish educational standards for hearing loss preven-
tion practitioners
- Establish best-practice performance criteria for HLPP.
- Certification valid for 5 years
CAOHC Certification
- Ensures uniform standards of practice.
- Noise induced hearing loss (NIHL)
Auditory - Tinnitus
- Hyperacusis (Hypersensitivity to sound)
-Hypertension
- Isolation
Non-Auditory
- Sleep disturbances
- Degraded work performance
- Group activities aren't as enjoyable
- People "talk down" to hearing impaired
- Increased stress and fatigue
- Confusion and impatience
Effects of Hearing Loss
- Loss of self-confidence
- Less chance of promotion
- Family and work life are disrupted
- Other associated co-morbidities
Early Signs of NIHL
, - Diflculty understanding conversations (Particularly in
background noise)
- Ringing or buzzing in the ears (Tinnitus)
- Usually bilateral, Always sensorineaural
- Typically affects high frequencies first; Audiometric
"notch" at 4000 Hz
Characteristics of NIHL - Primary determiners of damage are duration and in-
tencity of sound.
- Temporary hearing threshold shifts (TTS)
- Permanent threshold shifts (PTS)
- Occupational noise exposure
Hazardous Noise Sources
- Non-occupational noise exposure
- Manufacturing
- 30 Million people are exposed to hazardous noise in the
Occupational NIHL workplace with another 9 million exposed to ototoxins.
- Manufacturing and utilities, agriculture, mining, con-
struction, transportation, and military.
- Auricle (pinna)
Outer Ear
- External Auditory Meatus (canal)
Normal Tympanic Membrane (Ear Drum) Forms boundary between outer and middle ear.
A- Melleus
B- Incus
Structures of the Middle Ear C- Stapes
- Ossicles- The smallest bone in the body
- Footplate of the stapes enters oval window.
- Hearing- Cochlea
Inner Ear - Balance- Vestibular System
- Round Window
2/9
