Decontamination and Cleaning Verification Flashcards

The first and most important step in the decontamination process, which should begin immediately after a surgical procedure, is called:

Answer: Point-of-use treatment

Point-of-use treatment is the crucial first step where gross soil is removed from instruments in the operating room. This prevents blood and other materials from drying, making the subsequent cleaning process in the decontamination area more effective and efficient.

When transporting contaminated instruments from the point of use to the decontamination area, the cart or container must be:

Answer: Covered, leak-proof, and labeled with a biohazard symbol

Contaminated items must be transported in a manner that prevents spillage and cross-contamination. This requires using a covered or enclosed cart that is leak-proof and clearly labeled with a biohazard symbol to alert staff to the hazardous contents.

Enzymatic detergents are used in the cleaning process to:

Answer: Break down and remove protein-based soils

Enzymatic detergents contain specific enzymes, such as protease (for protein), lipase (for fat), and amylase (for starch), that break down complex bioburden into smaller, water-soluble particles. This makes the soil easier to remove during the cleaning process.

What is the primary purpose of using a cleaning verification test, such as an ATP or protein test, after the cleaning process?

Answer: To verify the removal of microscopic soil and bioburden

Cleaning verification tests are used to confirm the effectiveness of the manual or mechanical cleaning process by detecting residual soil that may not be visible to the naked eye. This ensures that instruments are truly clean before they move on to high-level disinfection or sterilization.

The process of cavitation, which uses high-frequency sound waves to create and implode microscopic bubbles, is the cleaning mechanism for which piece of equipment?

Answer: Ultrasonic cleaner

Ultrasonic cleaners use cavitation to dislodge soil from hard-to-reach areas of instruments, such as joints, crevices, and lumens. The implosion of the bubbles creates a scrubbing action at the microscopic level, effectively removing fine debris.

During manual cleaning, instruments should be brushed:

Answer: Under the surface of the water

Brushing should always be done under the surface of the water. This practice prevents the aerosolization of microorganisms, which can create contaminated droplets that may be inhaled by the technician or splash onto surfaces, leading to cross-contamination.

For enzymatic detergents to be most effective, the water temperature should generally be:

Answer: Lukewarm (109°F - 140°F / 43°C - 60°C)

Enzymes are temperature-sensitive. Water that is too hot (typically above 140°F or 60°C) can denature the enzymes, rendering them ineffective, and can also cause blood proteins to coagulate on the instrument. Lukewarm water, as specified by the manufacturer, allows the enzymes to work optimally.