MDRAO - Medical Device Reprocessing Association of Ontario Introduction to Medical Device Reprocessing 1 — Questions and Answers
Question 1: According to the Spaulding classification system, which category applies to flexible endoscopes that contact mucous membranes but do not penetrate sterile tissue?
- Critical
- Semi-critical (Correct answer)
- Non-critical
- Intermediate
Correct answer: Semi-critical
Semi-critical items contact mucous membranes or non-intact skin and require at minimum high-level disinfection. Flexible endoscopes fall into this category because they touch mucous membranes but do not enter normally sterile body areas.
Question 2: What is the correct first step in the medical device reprocessing cycle that should be performed at the point of use?
- Packaging for sterilization
- Inspection and functional testing
- Pre-cleaning and point-of-use preparation (Correct answer)
- Sterilization or high-level disinfection
Correct answer: Pre-cleaning and point-of-use preparation
Pre-cleaning at the point of use prevents bioburden from drying and hardening on instruments, which would significantly reduce the effectiveness of subsequent cleaning steps. This critical first action must occur before instruments leave the procedure area.
Question 3: What is the fundamental difference between sterilization and high-level disinfection?
- Sterilization uses only chemical agents while high-level disinfection uses only heat
- Sterilization destroys all forms of microbial life including bacterial spores, while high-level disinfection eliminates most microorganisms but may not destroy all bacterial spores (Correct answer)
- High-level disinfection is required for critical items that enter sterile tissue
- Sterilization is only applicable to single-use devices
Correct answer: Sterilization destroys all forms of microbial life including bacterial spores, while high-level disinfection eliminates most microorganisms but may not destroy all bacterial spores
Sterilization achieves complete destruction of all microbial life, including the most resistant bacterial spores. High-level disinfection kills most organisms but may not reliably eliminate all spores, which is why sterilization is required for critical items.
Question 4: Which personal protective equipment (PPE) is required for staff working in the decontamination area of the CSSD, according to CSA standards?
- Surgical mask and exam gloves only
- Standard isolation gown and safety glasses
- Lab coat, N95 respirator, and sterile gloves
- Impervious gown, heavy-duty utility gloves, eye and face protection, and mask (Correct answer)
Correct answer: Impervious gown, heavy-duty utility gloves, eye and face protection, and mask
The decontamination area is considered a contaminated zone with risks of splashing blood, body fluids, and chemical exposure. CSA standards mandate impervious gowns, heavy-duty utility gloves, and full eye/face and respiratory protection to safeguard staff.
Question 5: What is biofilm, and why is it a significant concern in medical device reprocessing?
- A chemical residue left after sterilization that must be rinsed away before packaging
- A community of microorganisms encased in a self-produced protective matrix that adheres to device surfaces and is highly resistant to cleaning and disinfection (Correct answer)
- A type of barrier packaging material used to maintain sterility after processing
- A biological indicator used to verify that sterilization cycles have been effective
Correct answer: A community of microorganisms encased in a self-produced protective matrix that adheres to device surfaces and is highly resistant to cleaning and disinfection
Biofilm consists of bacterial communities embedded in a self-produced protective matrix that adheres strongly to device surfaces. This matrix dramatically increases resistance to cleaning agents and disinfectants, making thorough manual cleaning essential to break down and remove biofilm before disinfection or sterilization.
Question 6: Under Canadian standards, what is required if a healthcare facility chooses to reprocess a device that is labelled as single-use (SUD)?
- SUDs may be reprocessed freely as long as they are visually inspected before reuse
- The facility must obtain written authorization from the attending physician
- The reprocessing facility must meet the same regulatory requirements as the original manufacturer and validate the entire reprocessing process (Correct answer)
- A signed patient consent form is the only documentation required to authorize SUD reprocessing
Correct answer: The reprocessing facility must meet the same regulatory requirements as the original manufacturer and validate the entire reprocessing process
CSA Z314 and Health Canada guidance establish that any facility reprocessing single-use devices assumes the same rigorous regulatory obligations as the original device manufacturer, including full validation of cleaning, sterilization, and functional integrity testing for each device type.
MDRAO - Medical Device Reprocessing Association of Ontario Introduction to Medical Device Reprocessing 1
According to the Spaulding classification system, which category applies to flexible endoscopes that contact mucous membranes but do not penetrate sterile tissue?