CER CER - Certified Endoscope Reprocessor Chemical Disinfectants and Germicides Questions and Answers 2

Question 1

What is the primary reason superoxidized water (e.g., Sterilox) is not widely adopted for endoscope HLD in the US?

Accepted Answer

Short shelf life and must be generated on-site

Answer

Superoxidized water degrades rapidly and must be generated on-site immediately before use, making logistics challenging for routine HLD programs.

Question 2

Which property of hydrogen peroxide plasma sterilization makes it unsuitable for endoscopes with long, narrow lumens?

Accepted Answer

Inability to penetrate deep lumens due to diffusion limits

Answer

Hydrogen peroxide plasma has diffusion limitations that prevent adequate penetration of long, narrow lumens common in flexible endoscopes.

Question 3

When using a chemical HLD solution, how should reprocessing staff verify the solution's concentration before each use cycle?

Accepted Answer

Test with the manufacturer's specific MEC test strips

Answer

Manufacturer-supplied MEC test strips are the validated method for confirming that a disinfectant solution remains above the minimum effective concentration.

Question 4

OPA solution leaves a gray stain on which type of tissue if residual chemical contacts the patient?

Accepted Answer

Mucous membranes

Answer

OPA can cause gray staining of mucous membranes, which is why thorough rinsing after HLD is critical before scope use.

Question 5

What is the required minimum soak time for glutaraldehyde 2.4% to achieve high-level disinfection at 25°C (77°F)?

Accepted Answer

45 minutes

Answer

At 25°C, glutaraldehyde 2.4% requires a minimum 45-minute soak to achieve HLD per most manufacturer instructions for use.

CER - Certified Endoscope Reprocessor Practice Test

CER - Certified Endoscope Reprocessor Practice Test

CER CER - Certified Endoscope Reprocessor Chemical Disinfectants and Germicides Questions and Answers 2