CIS Storage and Distribution of Sterile Instruments

Question 1

What is the primary purpose of event-related sterility in instrument storage?

Accepted Answer

Sterility is maintained until the package is opened or compromised

Answer

Event-related sterility means a package remains sterile until a physical event—such as opening, tearing, or moisture exposure—compromises the integrity of the packaging.

Question 2

Which environmental condition is MOST critical to maintain in a sterile storage area?

Accepted Answer

Controlled temperature and humidity with positive-pressure ventilation

Answer

Sterile storage areas require controlled temperature (65–72°F), relative humidity (35–60%), and positive air pressure to minimize microbial contamination.

Question 3

A sterile package is found with a torn corner on the outer wrap. What is the correct action?

Accepted Answer

Remove it from circulation and reprocess the item

Answer

Any compromise to packaging integrity—including a torn corner—means the item can no longer be considered sterile and must be removed and reprocessed.

Question 4

How should sterile instrument sets be positioned on storage shelves?

Accepted Answer

Stored in a single layer with sets not stacked on top of each other

Answer

Sterile sets should be stored in a single layer to prevent compression damage to packaging and to allow proper air circulation around each package.

Question 5

What is the recommended minimum distance sterile packages should be stored from the floor?

Accepted Answer

8–10 inches

Answer

AAMI and IAHCSMM guidelines recommend sterile packages be stored at least 8–10 inches off the floor to reduce contamination risk from floor cleaning activities.

CIS - Certified Instrument Specialist Practice Test

CIS - Certified Instrument Specialist Practice Test

CIS Storage and Distribution of Sterile Instruments