CMDRT - Certified Medical Device Reprocessing Technician Storage and Distribution Questions and Answers — Questions and Answers
Question 1: A technician conducting a daily environmental check in the sterile storage area notes that the relative humidity is 75%. According to CSA Z314-18 standards, what is the most appropriate action to take?
- Document the reading, as it is within the acceptable range.
- Decrease the room temperature to lower the humidity.
- Report the reading immediately to a supervisor as it exceeds the recommended limit. (Correct answer)
- Increase the air exchange rate to circulate more dry air.
Correct answer: Report the reading immediately to a supervisor as it exceeds the recommended limit.
CSA standards recommend that the relative humidity in sterile storage areas be maintained between 30% and 60%. A reading of 75% is too high and creates an environment conducive to microbial growth, potentially compromising the integrity of sterile packages. This deviation must be reported for corrective action.
Question 2: According to Canadian Standards Association (CSA) guidelines for the setup of a sterile storage area, what is the minimum required distance between the bottom storage shelf and the floor?
- 25 cm (10 inches) (Correct answer)
- 15 cm (6 inches)
- 30 cm (12 inches)
- 20 cm (8 inches)
Correct answer: 25 cm (10 inches)
CSA standard Z314-18 specifies that the bottom shelf for sterile storage must be at least 25 cm (10 inches) off the floor. This requirement facilitates proper floor cleaning and protects sterile items from contamination from floor-level dust, debris, and cleaning solutions.
Question 3: An MDRT is preparing to transport several sterile instrument trays from the MDRD to an operating room on another floor. Which of the following is the most appropriate method for transporting these items?
- Stacking the trays carefully on an open utility cart.
- Placing the trays in a clean, dedicated, covered cart. (Correct answer)
- Carrying the trays by hand, ensuring they remain level.
- Using the same cart that transports soiled items after wiping it with a disinfectant.
Correct answer: Placing the trays in a clean, dedicated, covered cart.
Sterile items must be transported in a manner that protects them from environmental contamination and physical damage. A clean, dedicated, and covered cart is the standard method to maintain the integrity of the sterile barrier during transit between departments.
Question 4: The principle of using the oldest sterile supplies before newer ones is a key part of inventory management in a sterile storage area. What is this practice called?
- Last-In, First-Out (LIFO)
- Just-In-Time (JIT)
- Event-Related Sterility (ERS)
- First-In, First-Out (FIFO) (Correct answer)
Correct answer: First-In, First-Out (FIFO)
First-In, First-Out (FIFO) is a stock rotation principle ensuring that the items that have been in storage the longest are used first. This practice helps prevent items from sitting on shelves for extended periods and minimizes the chances of packaged items expiring, if applicable.
Question 5: Which of the following scenarios best illustrates the concept of 'event-related sterility' being compromised?
- An instrument tray sterilized six months ago is still on the shelf.
- A peel-pouched item is dropped on the floor, but the pouch remains visibly intact and dry.
- A wrapped tray is found to have a small water stain on the outer wrap. (Correct answer)
- The external chemical indicator on a package has slightly faded over time.
Correct answer: A wrapped tray is found to have a small water stain on the outer wrap.
Event-related sterility holds that an item remains sterile until an event compromises the package barrier. A water stain indicates that the package has been wet, and moisture can act as a wick, allowing microorganisms to penetrate the barrier, thus compromising sterility. The other options do not represent events that breach the package's integrity.
Question 6: Before issuing a sterile item, a technician must perform a final inspection of the package. Which of the following is a critical reason for rejecting the package?
- The internal chemical indicator is not visible from the outside.
- The package feels cool to the touch.
- A small tear is found in the corner of the wrapper. (Correct answer)
- The sterilization load number is handwritten instead of pre-printed.
Correct answer: A small tear is found in the corner of the wrapper.
The integrity of the packaging is paramount to maintaining sterility. A tear, hole, or any breach in the wrapper creates a direct portal for microorganisms to enter and contaminate the contents, rendering the item unsafe for use. The package must be rejected and the contents reprocessed.
CMDRT - Certified Medical Device Reprocessing Technician Storage and Distribution Questions and Answers
A technician conducting a daily environmental check in the sterile storage area notes that the relative humidity is 75%.
According to CSA Z314-18 standards, what is the most appropriate action to take?