Decontamination and Disinfection Flashcards
6 cards from real CBSPD practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Decontamination and Disinfection flashcards as text
A sterile processing technician is preparing a flexible bronchoscope for its next use. According to the Spaulding Classification system, which of the following is the MINIMUM required level of processing for this device?
Answer: High-Level Disinfection
Flexible bronchoscopes are considered semi-critical devices because they come into contact with mucous membranes. According to the Spaulding Classification, semi-critical items require, at a minimum, high-level disinfection to eliminate all microorganisms except for high numbers of bacterial spores.
Which of the following environmental conditions is recommended for the decontamination area of a Sterile Processing department, according to AAMI ST79 guidelines?
Answer: Negative air pressure with at least 10 air exchanges per hour
The decontamination area must be under negative air pressure to prevent airborne contaminants from escaping into clean areas. AAMI ST79 recommends at least 10 air exchanges per hour to keep the area well-ventilated. The temperature is typically kept cooler (60-65°F) for staff comfort while wearing PPE.
A new enzymatic detergent is being trialed in the decontamination area. To ensure its effectiveness, the water temperature should be maintained within the range specified by the manufacturer's Instructions for Use (IFU). What is the primary reason for this requirement?
Answer: The enzymatic action is optimized within a specific temperature range; temperatures that are too high can cause the enzymes to break down.
Enzymes are proteins that work best within a specific temperature range. If the water is too hot, the enzymes can denature (break down), rendering the detergent ineffective at breaking down bioburden. If it's too cold, the enzymatic activity will be too slow. Following the IFU is critical for effective cleaning.
During the manual cleaning of surgical instruments, which of the following is the first and most critical step in the process?
Answer: Immersing the instruments in a basin with an appropriate, properly diluted, neutral pH detergent.
The first step after sorting and disassembling is to immerse the instruments in a cleaning solution. This begins the process of loosening and removing soil. Using a neutral pH detergent is recommended to prevent damage to the instruments. Scrubbing occurs after immersion, and rinsing follows cleaning.
A technician in the decontamination area receives a tray of instruments from an orthopedic procedure that has dried-on bone and tissue. Which of the following cleaning agents would be most effective at breaking down this type of soil?
Answer: Protease enzymes
Protease enzymes are specifically designed to break down protein-based soils like blood, tissue, and bone. Lipase enzymes target fats, and amylase enzymes target starches. While a high-alkaline detergent is a powerful cleaner, a protease-based enzymatic cleaner is the most appropriate initial choice for this type of bioburden.
When transporting contaminated surgical instruments from the operating room to the decontamination area, which of the following practices is required to ensure safety and compliance?
Answer: Using a leak-proof, puncture-resistant container with a solid lid and a biohazard label.
Contaminated instruments must be transported in a contained manner to prevent spillage and cross-contamination. Regulations require the use of a closed or covered cart, or a rigid, leak-proof, puncture-resistant container that is clearly marked with a biohazard symbol. Saline should not be used for rinsing as it can damage instruments.