Free MDRAO Decontamination Processes and Equipment Questions and Answers

Question 1

What is the first and most crucial step in the decontamination process for reusable medical devices?

Accepted Answer

Manual cleaning

Answer

Manual cleaning, or cleaning at the point of use, is the most critical step. It removes gross soil, preventing it from drying and making subsequent cleaning and sterilization processes more effective. Failure to clean properly can render sterilization ineffective.

Question 2

Which cycle in a washer-disinfector is primarily responsible for coagulating protein-based soils if they haven't been removed?

Accepted Answer

Thermal rinse

Answer

The thermal rinse uses hot water (typically 80-93°C) for disinfection. If protein soils have not been adequately removed in the wash cycle, this high heat can coagulate them, making them very difficult to remove and potentially shielding microorganisms from sterilization.

Question 3

The cleaning process in an ultrasonic cleaner is known as:

Accepted Answer

Cavitation

Answer

Ultrasonic cleaners work by creating microscopic bubbles in the cleaning solution through high-frequency sound waves. These bubbles implode upon contact with the instrument's surface, a process called cavitation, which dislodges soil from hard-to-reach areas like crevices and joints.

Question 4

A proteolytic enzyme in a cleaning detergent is specifically designed to break down what type of soil?

Accepted Answer

Proteins

Answer

Proteolytic enzymes (proteases) target and break down protein-based soils, such as blood, tissue, and body fluids. This is crucial as proteins are common on surgical instruments and can be difficult to remove with standard detergents.

Question 5

What is the minimum required Personal Protective Equipment (PPE) for staff working in the decontamination area?

Accepted Answer

Fluid-resistant gown, gloves, face shield/goggles, and hair cover

Answer

The decontamination area poses a high risk of exposure to microorganisms and chemical splashes. CSA standards mandate comprehensive PPE, including a fluid-resistant gown, utility gloves, a full face shield or goggles with a mask, a hair cover, and fluid-resistant shoe covers to protect staff from contamination.

MDRAO - Medical Device Reprocessing Association of Ontario Practice Test

MDRAO - Medical Device Reprocessing Association of Ontario Practice Test

Free MDRAO Decontamination Processes and Equipment Questions and Answers