CABT Sterilization and Infection Control 3

Question 1

Gamma radiation sterilization is most commonly applied to which category of medical products?

Accepted Answer

Single-use plastic devices and pre-packaged sterile products

Answer

Reusable heat-stable surgical instruments processed in hospital CSDs

Answer

Liquid parenteral medications requiring terminal sterilization

Answer

Implantable devices processed in hospital central sterile departments

Question 2

In the Spaulding Classification System, a flexible endoscope that contacts mucous membranes is designated as a:

Accepted Answer

Semi-critical item requiring at minimum high-level disinfection

Answer

Non-critical item requiring low-level disinfection

Answer

Critical item requiring full sterilization before each use

Answer

Sterile item requiring sterile packaging at all times

Question 3

Which low-temperature sterilization technology is commonly used in hospitals for heat-sensitive devices such as certain flexible endoscopes and electronic components?

Accepted Answer

Hydrogen peroxide gas plasma sterilization

Answer

Flash (immediate-use) steam sterilization at 132°C

Answer

Dry heat sterilization at 160°C for 2 hours

Answer

Isopropyl alcohol immersion for 30 minutes

Question 4

A biomedical technician finds that a biological indicator from a sterilization load has returned a positive result. What is the most appropriate immediate action?

Accepted Answer

Recall all items from that load and report the failure to the infection control team

Answer

Re-run the biological indicator test before taking any action

Answer

Increase sterilization time for the next load and document the event

Answer

Discard the positive BI and release the load since chemical indicators passed

Question 5

Which organization publishes ANSI/AAMI ST79, the comprehensive guideline for steam sterilization and sterility assurance in health care facilities?

Accepted Answer

Association for the Advancement of Medical Instrumentation (AAMI)

Answer

Centers for Disease Control and Prevention (CDC)

Answer

Occupational Safety and Health Administration (OSHA)

Answer

The Joint Commission (TJC)

Question 6

What minimum PPE combination is required when manually decontaminating soiled surgical instruments in a central sterile department?

Accepted Answer

Utility gloves, fluid-resistant gown, surgical mask, and eye protection

Answer

Sterile gloves only, to protect instruments from recontamination during handling

Answer

Examination gloves and a standard laboratory coat

Answer

N95 respirator and sterile draping over all work surfaces

Question 7

The principle of event-related sterility asserts that a sterilized package:

Accepted Answer

Remains sterile as long as packaging integrity is maintained, regardless of elapsed time

Answer

Expires after a fixed period of 30 days regardless of storage conditions

Answer

Must be re-sterilized if stored for more than 6 months even if undamaged

Answer

Requires a color-coded tag system to indicate age-based sterility status