CMDRT - Certified Medical Device Reprocessing Technician Flexible Endoscope Reprocessing Questions and Answers

Question 1

Which of the following actions is the most critical first step in the reprocessing of a flexible endoscope, performed at the point-of-use immediately after the patient procedure?

Accepted Answer

Wiping the insertion tube with an enzymatic sponge and flushing channels with detergent.

Answer

Rinsing the insertion tube with sterile water.

Answer

Performing an initial dry leak test.

Answer

Detaching all removable valves and buttons.

Question 2

What is the primary rationale for flushing all channels of a flexible endoscope with 70% isopropyl alcohol followed by forced filtered air after high-level disinfection?

Accepted Answer

To facilitate rapid drying and prevent the growth of waterborne microorganisms during storage.

Answer

To provide an additional microbicidal action against any remaining pathogens.

Answer

To neutralize any residual high-level disinfectant left after the final rinse.

Answer

To verify the patency of the channels one final time before storage.

Question 3

A technician performing a leak test on a flexible gastroscope observes that the pressure gauge fails to hold a steady pressure and drops continuously. Which of the following is the most appropriate immediate action?

Accepted Answer

Discontinue the reprocessing procedure, document the failure, and send the endoscope for repair.

Answer

Proceed with manual cleaning but flag the scope for repair later.

Answer

Re-pressurize the scope to a higher PSI to locate the leak.

Answer

Submerge the pressurized scope in water to visually confirm the leak's location.

Question 4

An MDRT is loading a complex flexible duodenoscope into an Automated Endoscope Reprocessor (AER). The technician correctly connects the hookups for the main channels but overlooks the specific, smaller connector for the elevator wire channel. What is the most likely consequence of this oversight?

Accepted Answer

The elevator wire channel will not be adequately high-level disinfected.

Answer

The AER will alarm and stop the cycle because it detects a missed connection.

Answer

The cycle time for the AER will be significantly shorter due to lower fluid volume.

Answer

The exterior of the endoscope's distal tip will not be properly cleaned.

Question 5

A technician is manually cleaning a flexible colonoscope. After thoroughly brushing all accessible channels while the scope is fully submerged in an enzymatic solution, what is the critical next step *before* moving to the final rinse stage?

Accepted Answer

Actuate all movable parts and raise/lower elevators to dislodge trapped debris.

Answer

Perform a second leak test to ensure the brushing did not cause damage.

Answer

Flush the channels with 70% isopropyl alcohol to begin disinfection.

Answer

Visually inspect the scope's exterior for damage with a magnifying lamp.

Question 6

According to CSA standards and industry best practices, how should a properly reprocessed flexible endoscope be stored to maintain its quality and prevent contamination?

Accepted Answer

Hanging vertically in a dedicated, well-ventilated, and closed storage cabinet.

Answer

Coiled loosely in a sterile, breathable bag and placed on a shelf.

Answer

Horizontally on a wire rack inside the original transport case.

Answer

Wrapped in a sterile towel and stored in the general sterile supply room.