CIS CIS - Certified Instrument Specialist Storage and Distribution of Surgical Instruments Questions and Answers 1 — Questions and Answers
Question 1: What is the recommended maximum shelf life for sterile wrapped instrument sets stored in a closed cabinet under controlled conditions?
- 6 months
- 12 months
- Event-related, not time-related (Correct answer)
- 30 days
Correct answer: Event-related, not time-related
Modern sterile processing guidelines follow an event-related sterility concept, meaning sterility is maintained until an event compromises the packaging rather than a fixed time limit.
Question 2: Which environmental condition in the sterile storage area is most critical to preventing premature compromise of sterile packages?
- Lighting level
- Relative humidity (Correct answer)
- Flooring material
- Ceiling height
Correct answer: Relative humidity
High humidity can weaken packaging materials, allow moisture penetration, and compromise the sterile barrier, making humidity control critical in sterile storage areas.
Question 3: What is the AAMI-recommended temperature range for a sterile storage area?
- 55–65°F (13–18°C)
- 65–75°F (18–24°C) (Correct answer)
- 75–85°F (24–29°C)
- 50–60°F (10–16°C)
Correct answer: 65–75°F (18–24°C)
AAMI ST79 recommends sterile storage areas be maintained between 65–75°F (18–24°C) to preserve packaging integrity and instrument condition.
Question 4: Why should sterile packages never be stored on the floor of a sterile storage room?
- Floor vibrations degrade sterilants
- Floors are considered contaminated surfaces and packages could be damaged (Correct answer)
- Regulations require eye-level storage
- Instruments corrode faster when stored low
Correct answer: Floors are considered contaminated surfaces and packages could be damaged
Floors are considered contaminated areas and are subject to moisture, foot traffic, and cleaning chemicals that can compromise sterile packaging.
Question 5: What minimum distance from the floor should sterile items be stored according to standard sterile processing guidelines?
- 2 inches
- 8–10 inches (Correct answer)
- 18 inches
- 24 inches
Correct answer: 8–10 inches
AAMI ST79 recommends storing sterile items at least 8–10 inches off the floor to protect them from floor-level contamination and moisture.
Question 6: Which system is used to ensure the oldest sterile instrument sets are used before newer ones in sterile storage?
- FIFO (First In, First Out) (Correct answer)
- LIFO (Last In, First Out)
- Random rotation
- Date-coded color system only
Correct answer: FIFO (First In, First Out)
FIFO (First In, First Out) rotation ensures older sterile packages are issued before newer ones, reducing the risk of items sitting unused for extended periods.
CIS CIS - Certified Instrument Specialist Storage and Distribution of Surgical Instruments Questions and Answers 1
What is the recommended maximum shelf life for sterile wrapped instrument sets stored in a closed cabinet under controlled conditions?