CER Human Factors in Endoscope Reprocessing — Questions and Answers
Question 1: Which personal protective equipment (PPE) is required when immersing endoscopes in a high-level disinfectant such as ortho-phthalaldehyde (OPA)?
- Standard latex exam gloves and a lab coat
- Chemical-resistant gloves, fluid-resistant gown, eye protection, and face shield (Correct answer)
- N95 respirator and sterile surgical gloves only
- No PPE is required if the room has adequate ventilation
Correct answer: Chemical-resistant gloves, fluid-resistant gown, eye protection, and face shield
OPA and similar high-level disinfectants are toxic chemicals that can cause skin sensitization, eye damage, and respiratory irritation. OSHA and manufacturer instructions require chemical-resistant (not just latex) gloves, a fluid-resistant gown, and face/eye protection to guard against splashes and aerosols.
Question 2: What is the primary purpose of conducting annual competency assessments for endoscope reprocessing technicians?
- To determine eligibility for pay increases
- To fulfill accreditation documentation requirements with no clinical impact
- To verify that staff can consistently perform all reprocessing steps correctly and safely (Correct answer)
- To identify technicians who should be reassigned to other departments
Correct answer: To verify that staff can consistently perform all reprocessing steps correctly and safely
Competency assessment ensures that each technician has the current knowledge and hands-on skills to perform every reprocessing step correctly. Gaps in technique directly increase the risk of patient infection from inadequately reprocessed scopes.
Question 3: A reprocessing technician reports persistent headaches, eye irritation, and wheezing that resolve on days off. The most likely occupational cause is:
- Repetitive strain injury from manual brushing
- Exposure to high-level disinfectant chemical vapors (Correct answer)
- Noise-induced stress from automated endoscope reprocessors
- Dehydration from working in a warm environment
Correct answer: Exposure to high-level disinfectant chemical vapors
Glutaraldehyde and OPA vapors are well-documented occupational sensitizers that cause asthma, dermatitis, rhinitis, and eye irritation — symptoms that characteristically improve when the worker is away from the chemical exposure source.
Question 4: Which ventilation requirement is most important for a manual cleaning and disinfection area where high-level disinfectants are used?
- Positive-pressure airflow to keep contaminants out of the room
- At least 10 air changes per hour with negative pressure relative to adjacent areas (Correct answer)
- Air conditioning set below 65°F to slow chemical evaporation
- An open window to allow natural airflow
Correct answer: At least 10 air changes per hour with negative pressure relative to adjacent areas
Reprocessing areas using high-level disinfectants require negative pressure (to contain vapors) and a minimum of 10 air changes per hour to dilute and exhaust chemical vapors away from staff breathing zones, per OSHA and AAMI standards.
Question 5: When should a new reprocessing technician be permitted to perform endoscope reprocessing independently?
- Immediately upon hire if they hold any prior healthcare certification
- After completing facility orientation paperwork
- Only after initial competency has been verified through observation and skills check-off (Correct answer)
- After 30 days on the job regardless of demonstrated skill
Correct answer: Only after initial competency has been verified through observation and skills check-off
Independent practice should only begin after a documented skills verification that the technician can correctly perform each reprocessing step. Allowing unsupervised work before competency is confirmed is a patient safety risk and violates accreditation standards.
Question 6: Which ergonomic design feature is most important in a manual cleaning sink for endoscope reprocessing?
- A sink depth greater than 24 inches to fully submerge all scope lengths
- Sink height and depth adjusted to minimize forward bending and shoulder elevation for the technician (Correct answer)
- A sink made of stainless steel for compatibility with disinfectants
- A single large sink shared by all technicians to promote teamwork
Correct answer: Sink height and depth adjusted to minimize forward bending and shoulder elevation for the technician
Reprocessing involves repetitive manual cleaning that can cause musculoskeletal injury. Sinks should be positioned so technicians can work with a neutral spine, elbows near waist height, and without excessive forward reach — reducing cumulative strain injury risk.
CER Human Factors in Endoscope Reprocessing
Which personal protective equipment (PPE) is required when immersing endoscopes in a high-level disinfectant such as ortho-phthalaldehyde (OPA)?