CMDRT - Certified Medical Device Reprocessing Technician Occupational Health and Safety Questions and Answers 2 — Questions and Answers

Question 1: What is the hierarchy of controls as applied to hazards in the medical device reprocessing department?

PPE is always the first and best control measure
Elimination → Substitution → Engineering controls → Administrative controls → PPE, in order of most to least effective (Correct answer)
Training is the most effective control
Administrative controls are always preferred over engineering controls

Correct answer: Elimination → Substitution → Engineering controls → Administrative controls → PPE, in order of most to least effective

The hierarchy of controls prioritizes eliminating the hazard first, then substituting with less hazardous alternatives, then engineering controls, then administrative controls, with PPE as the last line of defence.

The hierarchy of controls is a fundamental occupational health and safety principle endorsed by Canadian OHS legislation and applied extensively in medical device reprocessing. From most to least effective: (1) Elimination — completely removing the hazard (e.g., switching from reusable to single-use devices). (2) Substitution — replacing a hazardous material with a less hazardous one (e.g., replacing glutaraldehyde with OPA or peracetic acid). (3) Engineering controls — physically isolating workers from hazards (e.g., local exhaust ventilation over HLD basins, automated endoscope reprocessors, enclosed sterilizer loading areas). (4) Administrative controls — changing work practices and policies (e.g., exposure monitoring, job rotation, standard operating procedures, training). (5) PPE — personal protective equipment as the last line of defence (e.g., gloves, gowns, face shields, respiratory protection). In practice, multiple levels are used simultaneously. The key principle is that PPE should never be the primary control measure — it should supplement higher-level controls.

Question 2: What are the main sharps injury prevention strategies in the reprocessing department?

There is no way to prevent sharps injuries
Using puncture-resistant containers, heavy-duty gloves, instrument handling techniques that avoid hand-to-hand passing, and engineered sharps safety devices (Correct answer)
Only wearing double gloves
Avoiding all contact with instruments

Correct answer: Using puncture-resistant containers, heavy-duty gloves, instrument handling techniques that avoid hand-to-hand passing, and engineered sharps safety devices

A comprehensive sharps prevention program includes puncture-resistant transport containers, heavy-duty gloves, safe handling techniques, designated sharps disposal containers, and engineered safety devices where available.

Sharps injuries are one of the most significant occupational hazards in medical device reprocessing departments, with the potential for transmission of bloodborne pathogens including hepatitis B (HBV), hepatitis C (HCV), and HIV. Canadian OHS regulations and CSA standards mandate comprehensive sharps injury prevention programs including: (1) Engineering controls — puncture-resistant, leak-proof transport containers for contaminated instruments; sharps disposal containers placed at the point of use; automated cleaning equipment to reduce manual handling. (2) Work practice controls — instruments should be handled using forceps or other tools rather than bare hands where possible; avoid hand-to-hand passing of sharp instruments; systematically check trays for loose blades, needles, or sharps before handling. (3) PPE — heavy-duty, cut-resistant utility gloves (not surgical exam gloves) that provide puncture protection. (4) Administrative controls — training on safe handling techniques, post-exposure protocols, and incident reporting. (5) Immunization — hepatitis B vaccination is recommended for all reprocessing staff. All sharps injuries must be reported and investigated.

Question 3: What are the requirements for chemical safety data sheets (SDS) in the reprocessing department?

SDS are optional documents
Current SDS must be readily accessible for every chemical product used in the department, and staff must be trained on how to read and use them (Correct answer)
SDS are only needed for chemicals used in sterilization
One general SDS covers all cleaning chemicals

Correct answer: Current SDS must be readily accessible for every chemical product used in the department, and staff must be trained on how to read and use them

Under WHMIS 2015 (Canada's workplace hazardous materials information system), SDS must be available for all hazardous products. Staff must know where to find them and how to interpret the safety information they contain.

Safety Data Sheets (SDS, formerly Material Safety Data Sheets/MSDS) are a cornerstone of the Workplace Hazardous Materials Information System (WHMIS 2015), Canada's national workplace chemical safety program. In the medical device reprocessing department, SDS must be maintained and readily accessible for every chemical product used, including enzymatic detergents, high-level disinfectants, instrument lubricants, sterilant chemicals, and cleaning agents. Each SDS contains 16 standardized sections covering product identification, hazard identification, composition, first-aid measures, fire-fighting measures, accidental release measures, handling and storage, exposure controls/PPE, physical and chemical properties, stability and reactivity, toxicological information, ecological information, disposal considerations, transport information, regulatory information, and other information. Canadian employers are legally required to ensure that SDS are current (updated within three years), accessible to all workers at all times (including during emergencies), and that workers are educated on how to use them.

Question 4: What ergonomic hazards are common in medical device reprocessing and how can they be mitigated?

There are no ergonomic hazards in reprocessing
Repetitive motion, prolonged standing, heavy lifting, and awkward postures are common and can be mitigated through adjustable workstations, anti-fatigue mats, lift assists, and task rotation (Correct answer)
Only back injuries are a concern
Ergonomic hazards only affect office workers

Correct answer: Repetitive motion, prolonged standing, heavy lifting, and awkward postures are common and can be mitigated through adjustable workstations, anti-fatigue mats, lift assists, and task rotation

Reprocessing technicians perform physically demanding, repetitive work including lifting heavy instrument trays, standing for extended periods, and performing fine motor tasks. Ergonomic interventions reduce the risk of musculoskeletal injuries.

Medical device reprocessing departments present numerous ergonomic hazards that can lead to musculoskeletal disorders (MSDs) if not addressed. Common hazards include: (1) Repetitive motion — performing the same manual cleaning, inspection, and assembly tasks hundreds of times per shift can cause repetitive strain injuries (carpal tunnel syndrome, tendinitis). (2) Prolonged standing — reprocessing staff often stand for 8-12 hour shifts on hard floors. (3) Heavy lifting — instrument trays can weigh up to 25 pounds, and multiple trays are moved throughout each shift. (4) Awkward postures — bending over low work surfaces, reaching into deep sinks, and looking through magnifiers can strain the back, neck, and shoulders. Mitigation strategies include: height-adjustable workstations to accommodate different workers; anti-fatigue floor mats at standing workstations; mechanical lift assists or cart systems for heavy trays; task rotation to vary physical demands; regular breaks; and ergonomic tools with appropriate handle designs.

Question 5: What is the purpose of an occupational health surveillance program for reprocessing staff?

To monitor employee attendance
To track health effects related to workplace exposures, ensure immunizations are current, and detect early signs of occupational illness (Correct answer)
To manage employee scheduling
Surveillance programs are not needed in reprocessing departments

Correct answer: To track health effects related to workplace exposures, ensure immunizations are current, and detect early signs of occupational illness

Health surveillance monitors reprocessing staff for effects of workplace chemical exposures, ensures protective immunizations (especially hepatitis B) are maintained, and provides early detection of occupational health conditions.

An occupational health surveillance program for medical device reprocessing staff is required under Canadian OHS regulations and recommended by CSA Z314.8. The program serves several purposes: (1) Baseline and periodic health assessments — evaluating respiratory function (especially for staff exposed to glutaraldehyde, ETO, or other chemical sterilants), skin condition (for contact dermatitis), and overall health status. (2) Immunization management — ensuring hepatitis B vaccination is offered and documented, with antibody titre testing to confirm immunity. (3) Chemical exposure monitoring — tracking personal and area monitoring results for hazardous chemicals (glutaraldehyde, ETO) and investigating symptoms that may indicate overexposure. (4) Post-exposure management — providing immediate assessment and follow-up after sharps injuries or significant chemical exposures (e.g., splash incidents). (5) Return-to-work assessments — evaluating fitness after illness or injury. (6) Trend analysis — identifying patterns that may indicate systemic workplace hazards requiring intervention. All surveillance records must be maintained confidentially per provincial privacy legislation.

Question 6: What should a reprocessing technician do immediately after sustaining a needlestick injury from a contaminated instrument?

Continue working and report it at the end of the shift
Immediately wash the site with soap and water, report the incident to the supervisor, and seek medical assessment according to the facility's post-exposure protocol (Correct answer)
Apply a bandage and continue working
Squeeze the wound vigorously to push out blood

Correct answer: Immediately wash the site with soap and water, report the incident to the supervisor, and seek medical assessment according to the facility's post-exposure protocol

Prompt first aid (washing with soap and water) and immediate reporting are essential for timely post-exposure assessment, prophylaxis (if indicated), and follow-up testing for bloodborne pathogens.

A needlestick or sharps injury from a contaminated instrument is a medical emergency requiring immediate response. The post-exposure protocol in Canadian healthcare facilities typically includes: (1) Immediate first aid — wash the wound thoroughly with soap and water for several minutes. For mucous membrane exposures (eyes, mouth), flush with clean water or saline. Do NOT squeeze the wound (this can force pathogens deeper into tissue) or use antiseptics/bleach on the wound. (2) Report immediately — notify the supervisor and complete an incident report. (3) Identify the source patient — if possible, determine which patient's instruments were involved so their bloodborne pathogen status can be assessed (with consent). (4) Medical assessment — attend occupational health or the emergency department immediately for risk assessment, baseline bloodwork (HBV, HCV, HIV), and possible post-exposure prophylaxis (PEP). HIV PEP is most effective when started within 2 hours. (5) Follow-up — serial blood testing at intervals (typically 6 weeks, 3 months, 6 months) to detect seroconversion. (6) Psychological support — needlestick injuries cause significant anxiety. All steps must be documented.

CMDRT - Certified Medical Device Reprocessing Technician Occupational Health and Safety Questions and Answers 2

What is the hierarchy of controls as applied to hazards in the medical device reprocessing department?