Results
#1. Which enzyme is used to break down fats on surgical instruments?
Correct Answer: Lipase
Explanation: Lipase enzymes dissolve fatty residues, making them easier to remove during cleaning.
#2. Who provides the official cleaning instructions for surgical instruments?
Correct Answer: The device manufacturer
Explanation: Always follow the manufacturer’s Instructions for Use (IFU) to clean instruments safely and correctly.
#3. What pH detergent is recommended for cleaning most surgical instruments?
Correct Answer: Neutral pH detergent
Explanation: Neutral pH detergents effectively clean instruments while helping protect their surfaces from damage.
#4. Why should ultrasonic cleaners be degassed after fresh water is added?
Correct Answer: To remove excess air bubbles
Explanation: Degassing removes trapped air so the ultrasonic cleaner can operate at full cleaning efficiency.
#5. What type of water should be used to rinse instruments before cleaning to help prevent proteins from sticking?
Correct Answer: Cold water
Explanation: Cold water helps prevent blood proteins from coagulating, making instruments easier to clean.
#6. Before placing instruments into a washer-disinfector, they should be:
Correct Answer: Disassembled and opened
Explanation: Opening and disassembling instruments allows water and detergent to reach every surface during cleaning.
#7. What problem can untreated water cause during instrument cleaning?
Correct Answer: Mineral scale buildup
Explanation: Minerals in untreated water can leave deposits on instruments and interfere with proper cleaning.
#8. When should instrument lubrication be performed?
Correct Answer: After cleaning
Explanation: Lubrication is applied after instruments are thoroughly cleaned to help maintain smooth movement and protect moving parts.
#9. During manual cleaning, instruments should be brushed using what motion?
Correct Answer: Back-and-forth motion
Explanation: A back-and-forth brushing motion removes soil effectively while reducing the chance of damaging the instrument.
#10. What type of materials should the walls and floors in the decontamination area be made from?
Correct Answer: Materials that tolerate frequent cleaning chemicals
Explanation: Durable surfaces allow frequent cleaning and disinfection without being damaged.