CER High-Level Disinfection Processes 3

Question 1

Ortho-phthalaldehyde (OPA) has what primary advantage over glutaraldehyde for high-level disinfection?

Accepted Answer

Faster acting at room temperature with less irritation

Answer

OPA works faster than glutaraldehyde (12 minutes vs. 20 minutes) and produces fewer fumes, reducing occupational health concerns.

Question 2

When performing high-level disinfection in an automated endoscope reprocessor (AER), which step must be verified manually before loading the scope?

Accepted Answer

That thorough manual cleaning and leak testing have been completed

Answer

Manual cleaning and leak testing must be completed before placing the scope in an AER, as the AER does not compensate for inadequate pre-cleaning.

Question 3

A flexible endoscope fails a leak test. What should be done before proceeding with HLD?

Accepted Answer

Remove the scope from service and send it for repair

Answer

A scope that fails leak testing must be taken out of service and sent for repair to prevent internal damage from HLD chemicals and cross-contamination.

Question 4

Which personal protective equipment (PPE) is required when handling glutaraldehyde HLD solutions?

Accepted Answer

Gloves, gown, and eye/face protection at minimum

Answer

At minimum, gloves, a fluid-resistant gown, and eye/face protection are required when handling glutaraldehyde due to its toxic and sensitizing properties.

Question 5

What is the purpose of rinsing an endoscope thoroughly with sterile or filtered water after HLD?

Accepted Answer

To remove residual disinfectant that could harm patients

Answer

Residual HLD chemicals can cause mucosal injury in patients, so thorough rinsing with sterile or filtered water after HLD is essential.

CER - Certified Endoscope Reprocessor Practice Test

CER - Certified Endoscope Reprocessor Practice Test

CER High-Level Disinfection Processes 3