COHN-S (Certified Occupational
Health Nurse Specialist) (2026
UPDATE) QUESTIONS AND ANSWERS
WITH RATIONALES/GRADED A+/2026
UPDATE/100% CORRECT /INSTANT
DOWNLOAD
Q1: Which of the following is the primary role of a COHN-S in workplace
health promotion?
A) Diagnosing chronic diseases
B) Developing and implementing occupational health programs
C) Performing surgical interventions
D) Prescribing medications
Rationale: The COHN-S focuses on designing and managing health
programs that prevent illness and injury in the workplace, rather than
providing direct medical treatment or performing surgeries .
Q2: When assessing a new employee, which screening is most
appropriate for occupational health purposes?
A) Full-body MRI
B) Baseline vital signs and medical history
C) Genetic testing
D) Full psychiatric evaluation
,Rationale: Baseline vital signs and a medical history provide essential
information to identify risk factors and ensure workplace safety, without
unnecessary invasive tests .
Q3: A worker presents with acute hearing loss after a sudden loud noise
exposure. What is the most appropriate first step?
A) Schedule a formal audiometric test within 48 hours
B) Perform otoscopic examination to rule out ear canal obstruction
C) Immediately prescribe oral steroids
D) Advise over-the-counter analgesics and return if symptoms persist
Rationale: The initial evaluation of acute hearing loss should include an
otoscopic exam to exclude cerumen impaction or tympanic membrane
injury before proceeding to audiometry or treatment .
Q4: The primary purpose of a medical surveillance program for workers
exposed to lead is to:
A) Detect early signs of lead-induced anemia and neurotoxicity
B) Provide a baseline for future occupational health research
C) Ensure compliance with OSHA record-keeping requirements
D) Replace the need for engineering controls
Rationale: Medical surveillance for lead exposure is designed to identify
early physiological changes (e.g., reduced hemoglobin, elevated blood
lead levels) so exposure can be reduced before irreversible damage
occurs .
Q5: A worker exposed to high noise levels reports tinnitus. What is the
priority action?
A) Refer to ENT immediately
B) Initiate baseline audiometry
C) Remove from exposure and evaluate
D) Provide earplugs
,Rationale: Immediate removal from exposure prevents further damage
while evaluation is conducted .
Q6: Which condition is associated with repetitive motion in the
workplace?
A) Asthma
B) Carpal tunnel syndrome
C) Hypertension
D) Dermatitis
Rationale: Repetitive motion injuries commonly lead to carpal tunnel
syndrome due to nerve compression from repeated wrist movements .
Q7: A worker with a history of asthma is scheduled for a pre-placement
physical for a job involving exposure to isocyanates. The COHN-S
should:
A) Clear the worker without further testing
B) Recommend baseline spirometry and discuss potential exposure
risks, possibly restricting the worker from that job if asthma is
uncontrolled
C) Ignore the asthma history because isocyanates are low-risk
D) Assign the worker and arrange follow-up after one year
Rationale: Baseline lung function assessment and evaluation of asthma
control are essential before assigning a worker to a job with known
respiratory sensitizers .
Q8: Which of the following is a common musculoskeletal disorder in
the workplace?
A) Hypertension
B) Carpal tunnel syndrome
C) Asthma unrelated to work
D) Migraine headaches
, Rationale: Carpal tunnel syndrome results from repetitive hand
movements and is a well-recognized occupational musculoskeletal
disorder .
Q9: A nurse identifies a worker exposed to high noise levels. The most
appropriate first action is:
A) Refer for hearing aids
B) Remove worker permanently from job
C) Recommend hearing conservation measures
D) Schedule surgical evaluation
Rationale: Prevention through hearing conservation programs is the first-
line intervention before medical or permanent job changes .
Q10: Which exposure route is most common for occupational chemical
injuries?
A) Injection
B) Inhalation
C) Radiation
D) Ingestion
Rationale: Inhalation is the most frequent route for workplace chemical
exposure due to volatility of many industrial solvents and chemicals .
Q11: A worker exposed to silica dust should be enrolled in a medical
surveillance program that includes:
A) Annual lipid panel testing
B) Quarterly spirometry and chest radiographs
C) Monthly complete blood counts
D) Biannual vision screening
Health Nurse Specialist) (2026
UPDATE) QUESTIONS AND ANSWERS
WITH RATIONALES/GRADED A+/2026
UPDATE/100% CORRECT /INSTANT
DOWNLOAD
Q1: Which of the following is the primary role of a COHN-S in workplace
health promotion?
A) Diagnosing chronic diseases
B) Developing and implementing occupational health programs
C) Performing surgical interventions
D) Prescribing medications
Rationale: The COHN-S focuses on designing and managing health
programs that prevent illness and injury in the workplace, rather than
providing direct medical treatment or performing surgeries .
Q2: When assessing a new employee, which screening is most
appropriate for occupational health purposes?
A) Full-body MRI
B) Baseline vital signs and medical history
C) Genetic testing
D) Full psychiatric evaluation
,Rationale: Baseline vital signs and a medical history provide essential
information to identify risk factors and ensure workplace safety, without
unnecessary invasive tests .
Q3: A worker presents with acute hearing loss after a sudden loud noise
exposure. What is the most appropriate first step?
A) Schedule a formal audiometric test within 48 hours
B) Perform otoscopic examination to rule out ear canal obstruction
C) Immediately prescribe oral steroids
D) Advise over-the-counter analgesics and return if symptoms persist
Rationale: The initial evaluation of acute hearing loss should include an
otoscopic exam to exclude cerumen impaction or tympanic membrane
injury before proceeding to audiometry or treatment .
Q4: The primary purpose of a medical surveillance program for workers
exposed to lead is to:
A) Detect early signs of lead-induced anemia and neurotoxicity
B) Provide a baseline for future occupational health research
C) Ensure compliance with OSHA record-keeping requirements
D) Replace the need for engineering controls
Rationale: Medical surveillance for lead exposure is designed to identify
early physiological changes (e.g., reduced hemoglobin, elevated blood
lead levels) so exposure can be reduced before irreversible damage
occurs .
Q5: A worker exposed to high noise levels reports tinnitus. What is the
priority action?
A) Refer to ENT immediately
B) Initiate baseline audiometry
C) Remove from exposure and evaluate
D) Provide earplugs
,Rationale: Immediate removal from exposure prevents further damage
while evaluation is conducted .
Q6: Which condition is associated with repetitive motion in the
workplace?
A) Asthma
B) Carpal tunnel syndrome
C) Hypertension
D) Dermatitis
Rationale: Repetitive motion injuries commonly lead to carpal tunnel
syndrome due to nerve compression from repeated wrist movements .
Q7: A worker with a history of asthma is scheduled for a pre-placement
physical for a job involving exposure to isocyanates. The COHN-S
should:
A) Clear the worker without further testing
B) Recommend baseline spirometry and discuss potential exposure
risks, possibly restricting the worker from that job if asthma is
uncontrolled
C) Ignore the asthma history because isocyanates are low-risk
D) Assign the worker and arrange follow-up after one year
Rationale: Baseline lung function assessment and evaluation of asthma
control are essential before assigning a worker to a job with known
respiratory sensitizers .
Q8: Which of the following is a common musculoskeletal disorder in
the workplace?
A) Hypertension
B) Carpal tunnel syndrome
C) Asthma unrelated to work
D) Migraine headaches
, Rationale: Carpal tunnel syndrome results from repetitive hand
movements and is a well-recognized occupational musculoskeletal
disorder .
Q9: A nurse identifies a worker exposed to high noise levels. The most
appropriate first action is:
A) Refer for hearing aids
B) Remove worker permanently from job
C) Recommend hearing conservation measures
D) Schedule surgical evaluation
Rationale: Prevention through hearing conservation programs is the first-
line intervention before medical or permanent job changes .
Q10: Which exposure route is most common for occupational chemical
injuries?
A) Injection
B) Inhalation
C) Radiation
D) Ingestion
Rationale: Inhalation is the most frequent route for workplace chemical
exposure due to volatility of many industrial solvents and chemicals .
Q11: A worker exposed to silica dust should be enrolled in a medical
surveillance program that includes:
A) Annual lipid panel testing
B) Quarterly spirometry and chest radiographs
C) Monthly complete blood counts
D) Biannual vision screening
