CMDRT - Certified Medical Device Reprocessing Technician Instrument Assembly and Packaging Questions and Answers

Question 1

When assembling an instrument set, where should the internal chemical indicator be placed to provide the most effective verification of sterilant penetration?

Accepted Answer

In the geometric center of the set or the area deemed most difficult for the sterilant to reach.

Answer

According to CDC and AAMI guidelines, the internal chemical indicator should be placed in the area considered most challenging for the sterilant to penetrate, which is typically the geometric center of the instrument set or pack. This placement ensures that if the indicator shows a pass, the sterilant has reached the most difficult area, providing a higher level of assurance for the entire set.

Question 2

A technician is packaging a single, lightweight hemostat for steam sterilization. Which of the following is the most appropriate packaging method?

Accepted Answer

A paper-plastic peel pouch.

Answer

Paper-plastic peel pouches are specifically designed and recommended for packaging small, lightweight, low-profile items like a single hemostat for steam sterilization. Rigid containers are for large sets, wraps are for trays, and Tyvek pouches are typically used for low-temperature sterilization methods, as the material can melt at steam sterilization temperatures.

Question 3

A newly assembled orthopedic tray is found to weigh 12 kg (approximately 26.5 lbs). According to CSA standard Z314, what is the most appropriate action for the reprocessing technician?

Accepted Answer

Re-assemble the contents into two separate, lighter trays.

Answer

CSA standards specify a maximum weight limit for instrument trays to ensure proper sterilant penetration, drying, and safe manual handling. The commonly accepted maximum weight is 10 kg (22 lbs). A tray weighing 12 kg exceeds this limit and must be broken down into smaller, lighter sets to comply with standards and ensure effective sterilization.

Question 4

Which of the following is a critical step when using a heat sealer to close a sterilization peel pouch?

Accepted Answer

Verifying the sealer provides a complete, uniform seal without any gaps, wrinkles, or bubbles.

Answer

The integrity of the seal is paramount for maintaining the sterility of the contents. The seal must be complete and free of defects like gaps, folds, or wrinkles, which could create channels for microbial contamination. Pouches should only be filled to about 75% capacity, writing should be on the plastic side or designated area, and folding is improper for heat sealing.

Question 5

When assembling instruments with hinges, such as forceps or scissors, into a tray for sterilization, what is the correct practice?

Accepted Answer

Instruments should be placed in the open, unlocked position on a stringer or rack.

Answer

Hinged instruments must be placed in an open and unlocked position to allow the sterilant to come into direct contact with all surfaces, including the box locks and serrations, which are difficult areas to clean and sterilize. Using a stringer or rack helps maintain this open position. Closing or locking the instruments prevents sterilant penetration. Elastic bands should not be used as they can melt or prevent sterilant contact.

CMDRT - Certified Medical Device Reprocessing Technician Practice Test

CMDRT - Certified Medical Device Reprocessing Technician Practice Test

CMDRT - Certified Medical Device Reprocessing Technician Instrument Assembly and Packaging Questions and Answers