Results
#1. After high-level disinfection (HLD), how should instruments be dried?
Correct Answer: Dry with HEPA-filtered air
Explanation: HEPA-filtered air helps dry instruments while reducing the risk of contamination.
#2. What is the process of destroying microorganisms with heat, while not necessarily eliminating bacterial spores?
Correct Answer: Thermal disinfection
Explanation: Thermal disinfection uses heat to destroy most microorganisms but may not eliminate bacterial spores.
#3. How often should the minimum effective concentration (MEC) of a high-level disinfectant be tested?
Correct Answer: Each day the solution is used
Explanation: Testing the solution daily ensures the disinfectant remains effective throughout its use.
#4. Antiseptics are designed to be used on:
Correct Answer: Living tissue
Explanation: Antiseptics reduce microorganisms on skin and other living tissues without causing significant damage.
#5. Which disinfectant should never be mixed with soap?
Correct Answer: Quaternary ammonium compounds (Quats)
Explanation: Soap can reduce the effectiveness of quaternary ammonium disinfectants, making them less effective.
#6. Instruments that enter normally sterile areas of the body are classified as:
Correct Answer: Critical items
Explanation: Critical items must be sterilized because they come into contact with sterile body tissues or the bloodstream.
#7. Which process destroys all forms of microorganisms?
Correct Answer: Sterilization
Explanation: Sterilization is the only process that destroys all microorganisms, including bacterial spores.
#8. When handling glutaraldehyde, what type of gloves should be worn?
Correct Answer: Nitrile gloves
Explanation: Nitrile gloves provide better chemical resistance and help protect the skin from exposure.
#9. In a washer-disinfector, what is the main method used to disinfect instruments?
Correct Answer: High water temperature
Explanation: Washer-disinfectors primarily rely on heat to achieve thermal disinfection.
#10. Which chemical is commonly used for high-level disinfection of heat-sensitive instruments?
Correct Answer: OPA (Ortho-phthalaldehyde)
Explanation: OPA is a widely used high-level disinfectant for instruments that cannot tolerate steam sterilization.