Mixed Deck — All MDRAO Topics Flashcards

What is a Weitlaner retractor, and how does it differ from handheld retractors in design and CSSD reprocessing requirements?

Answer: A Weitlaner is a self-retaining retractor with a hinged frame, rake-tipped blades, and a ratchet locking mechanism that holds itself open without assistance; CSSD must fully articulate and test the ratchet mechanism during inspection and ensure blades are clean between all tines

A Weitlaner is a self-retaining retractor that holds itself open via a ratchet mechanism, leaving surgeons' hands free. CSSD must verify the ratchet locks and releases properly at all positions and clean between all rake tines where tissue and blood accumulate.

Suppliers have 90 days to update the ______:

Answer: SDS

Explanation: Safety Data Sheets (SDS) provide detailed information about the properties of chemicals, including potential hazards and safety precautions. Suppliers are required to update SDS within 90 days if there are any changes to the information provided on the sheets. This ensures that users have access to accurate and up-to-date safety information for the chemicals they handle.

What is the recommended maximum weight for a wrapped instrument set according to most sterile processing guidelines?

Answer: 7 kg (15.4 lb)

Most guidelines, including AAMI ST79, recommend a maximum wrapped tray weight of approximately 7 kg (15.4 lb) to ensure adequate sterilant penetration and safe handling.

When sterile supplies are delivered to a clinical unit, nursing staff should:

Answer: Inspect packages for integrity before accepting and storing them

Clinical staff receiving sterile supplies are the last line of defense and must inspect packaging integrity before accepting items into unit stock.

Which biological indicator (BI) organism is used to monitor the efficacy of steam sterilization?

Answer: Geobacillus stearothermophilus (ATCC 7953)

Geobacillus stearothermophilus spores (ATCC 7953) are the standard biological indicator for steam sterilization due to their high resistance to moist heat.

What does professional responsibility mean for a Certified MDRT working in an Ontario healthcare facility?

Answer: Professional responsibility means adhering to MDRAO standards, maintaining competency through continuing education, documenting work accurately, speaking up about safety concerns, and refusing to perform tasks outside one's scope of practice

Professional responsibility for MDRTs includes maintaining competency, accurate documentation, adherence to professional and facility standards, and the obligation to raise safety concerns — protecting both patients and the integrity of the profession.

During a pre-use inspection of a sterile package, which finding should prompt immediate removal of the item from service for reprocessing?

Answer: A puncture or small tear in the outer packaging wrap

Any breach of the sterile barrier—such as a puncture, tear, compression crease, or moisture stain—compromises the packaging and the sterile status of the item. The item must be removed from service and reprocessed before it can be used safely on a patient.

A multi-level instrument tray is being prepared for steam sterilization. According to Canadian Standards Association (CSA) guidelines, where must an internal chemical indicator be placed?

Answer: In the geometric center of each level.

According to CAN/CSA-Z314-18, if a multi-layer container is being used, a chemical indicator must be placed on each level. This ensures that the sterilant has penetrated all layers of the set, which is critical for verifying the effectiveness of the sterilization cycle throughout the entire tray.

What are the three critical parameters for achieving steam sterilization?

Answer: Time, temperature, and pressure

Effective steam sterilization depends on the interplay of three critical parameters. The items must be exposed to a specific temperature for a minimum duration, and this must occur under a specific pressure to ensure the steam is saturated and can effectively kill microorganisms.

During assembly, which action best prevents sharp instrument tips from perforating a peel pouch?

Answer: Using tip protectors or guards approved for sterilization

Sterilization-compatible tip protectors physically shield sharp points and prevent puncture of the packaging material without compromising sterilant access.

When disposing of used glutaraldehyde HLD solution, the technician should:

Answer: Follow local regulations, which may require neutralization or specific disposal procedures

Glutaraldehyde disposal is regulated in many jurisdictions; facilities must follow local sewer authority limits and may require neutralization, dilution, or contracted hazardous waste removal.

How should single-use devices (SUDs) be handled in the CSSD when they are returned after patient use?

Answer: Single-use devices must NEVER be reprocessed or reused — they must be disposed of according to biohazard waste protocols after a single use

Single-use devices (SUDs) are labelled by the manufacturer for single use only — they must never be reprocessed or reused in Canadian healthcare facilities, and must be disposed of as biohazard waste per provincial regulations.

According to CSA Z314 standards, what is the correct sequence for manual cleaning of surgical instruments?

Answer: Pre-rinse, enzymatic soak, scrub under water, final rinse

CSA Z314 requires instruments to be pre-rinsed to remove gross soil, soaked in enzymatic detergent, scrubbed under water to prevent aerosol formation, and then rinsed thoroughly.

Instruments with tungsten carbide inserts should be packaged in trays that include which of the following?

Answer: Silicone mats or foam inserts to prevent contact damage

Silicone or foam inserts protect delicate tungsten carbide inserts from impact damage during transport and sterilization cycles.

What action must be taken if a biological indicator (BI) in a sterilizer load tests positive (shows growth) after processing?

Answer: Immediately recall all items from that load, reprocess them, and investigate the sterilizer failure

A positive BI indicates a potential sterilization failure. All items from that load must be recalled and reprocessed, the sterilizer taken out of service, and a thorough investigation conducted.

Which standard or guideline specifically addresses the reprocessing of flexible gastrointestinal endoscopes in Canadian healthcare facilities?

Answer: Professional society guidelines such as SGNA/CSGNA combined with CSA standards

Flexible endoscope reprocessing follows combined guidance from professional societies (SGNA/CSGNA) and applicable CSA standards, as no single document covers all requirements.

Which instrument cleaning method should NOT be used in the decontamination sink area because it generates aerosols?

Answer: High-pressure water spraying above the water line

High-pressure spraying above the water line aerosolizes contaminated droplets, creating an inhalation and surface contamination hazard for staff.

Which labeling information is considered essential on every sterile package at the point of distribution?

Answer: Item name, sterilization date or lot number, and expiry/use-by information

Sterile packages must be labeled with item identification, lot/sterilization date for traceability, and expiry information to ensure accountability.

An MDRD technician is performing hand hygiene before starting work in the clean assembly area. Which of the following practices is considered inappropriate and could compromise infection prevention?

Answer: Wearing artificial fingernails that are securely attached.

Health authorities and infection control guidelines strongly recommend that healthcare workers, especially those in high-risk areas like MDRDs, do not wear artificial fingernails. Artificial nails can harbor high concentrations of microorganisms, which are not always eliminated through hand washing or alcohol-based rubs, posing a significant risk of contamination to medical devices.

How does a bone rongeur differ from other surgical instruments in function and in its reprocessing requirements?

Answer: A bone rongeur is a heavy-duty, spring-loaded biting instrument designed to cut and remove bone; it requires inspection of the cutting cups for alignment and sharpness, spring tension, and the pivot mechanism, plus careful cleaning of the cutting cup junction where bone fragments accumulate

Bone rongeurs are heavy-duty cutting instruments for bone removal, with opposed cutting cups on a spring-loaded mechanism. Inspection requires checking cutting cup alignment and sharpness, spring function, and the pivot; the cutting junction requires especially thorough cleaning due to bone fragment accumulation.