CER - Certified Endoscope Reprocessor Endoscope Repair and Maintenance Questions and Answers

Question 1

A technician inspecting a flexible gastroscope after manual cleaning notes several sharp, accordion-like folds in the insertion tube that do not straighten. What is this type of damage called, and what is the appropriate action?

Accepted Answer

Buckling; the scope must be sent for professional repair.

Answer

This damage is known as buckling, a serious compromise to the internal components and outer sheath of the endoscope that can create channels for fluid invasion and harbor biofilm. The scope is unsafe for patient use and must be immediately removed from service and sent for professional repair.

Question 2

Which of the following is a key preventive maintenance practice performed by reprocessing staff to avoid costly repairs to the light guide connector?

Accepted Answer

Attaching the waterproof cap securely before any immersion in fluids.

Answer

The waterproof cap is essential for protecting the sensitive electrical contacts and components within the light guide connector from fluid invasion during cleaning and disinfection. Failure to secure the cap properly is a leading cause of major, expensive repairs due to fluid damage.

Question 3

During a functional check, a technician views the image from a colonoscope and observes several distinct, dark, stationary black spots on the monitor. This finding is most likely indicative of what type of problem requiring professional repair?

Accepted Answer

Damaged fiber optic light bundles or a damaged CCD chip.

Answer

Persistent, stationary black spots in the endoscopic image are a classic sign of broken fiber optic bundles that transmit light or damage to the pixels on the CCD (charge-coupled device) chip at the distal tip. While moisture or a dirty screen can cause image issues, they typically present as smudges or cloudy images, not distinct spots. This type of damage requires professional service.

Question 4

To prevent damage to a flexible endoscope's angulation system, what is a critical handling instruction that must be followed during transport and storage?

Accepted Answer

Place the angulation control knobs in the 'free' or unlocked position.

Answer

Leaving the angulation system locked puts continuous tension on the internal angulation wires. Over time, this stress can cause the wires to stretch or break, leading to expensive repairs and a loss of proper tip deflection. Therefore, the locks should always be in the 'free' or unlocked position during storage and transport.

Question 5

A hospital receives a loaner endoscope from a repair facility to use while its own scope is being serviced. Which of the following is the MOST critical first step before this scope can be used for a patient procedure?

Accepted Answer

Visually inspect it for damage and then perform a complete reprocessing cycle, including leak testing and high-level disinfection/sterilization.

Answer

A facility cannot verify the reprocessing status of an endoscope received from an outside source. According to standards from AAMI and SGNA, any endoscope entering the facility, including loaners, must be treated as contaminated and undergo a full reprocessing cycle (from manual cleaning through HLD/sterilization) before patient use to ensure patient safety.

CER - Certified Endoscope Reprocessor Practice Test

CER - Certified Endoscope Reprocessor Practice Test

CER - Certified Endoscope Reprocessor Endoscope Repair and Maintenance Questions and Answers