Certified Surgical Technologist Aseptic Technique and Sterilization Questions and Answers

Question 1

A surgical technologist is setting up for a procedure and notices a wrapped instrument tray has a small, dry water stain on the outer wrap.
The integrity of the packaging is not compromised, and the external chemical indicator has changed appropriately.
What is the most appropriate action for the technologist to take?

Accepted Answer

Consider the tray contaminated and remove it from the sterile field.

Answer

Use the instruments, as the indicator change and intact wrap confirm sterility.

Answer

Remove the outer wrap and inspect the inner wrap before deciding to use the tray.

Answer

Wipe the stained area with a sterile towel before opening the tray.

Question 2

Which of the following provides the most definitive evidence that a sterilization cycle was effective?

Accepted Answer

A biological indicator containing Geobacillus stearothermophilus spores shows no growth after incubation.

Answer

A chemical indicator strip inside the pack has changed to the correct color.

Answer

The printout from the sterilizer shows all physical parameters were met.

Answer

The indicator tape on the outside of the package has changed color.

Question 3

During a surgical procedure, a circulating nurse reaches over the sterile back table to retrieve an item. Which principle of aseptic technique has been violated?

Accepted Answer

Non-sterile individuals should not reach over a sterile field.

Answer

Sterile items should be kept separate from non-sterile items.

Answer

The edges of a sterile container are considered unsterile.

Answer

The sterile field should be created as close as possible to the time of use.

Question 4

The modern concept of 'event-related sterility' dictates that an item remains sterile until what occurs?

Accepted Answer

An event compromises the integrity of the package.

Answer

The expiration date printed on the package is reached.

Answer

The item has been stored for more than 30 days in a clean, dry area.

Answer

The item is moved from central sterile supply to the operating room.

Question 5

A surgical technologist is preparing for a case involving heat-sensitive instruments, such as flexible endoscopes. Which sterilization method would be most appropriate for these items?

Accepted Answer

Ethylene Oxide (ETO) gas

Answer

Dry heat sterilization

Answer

Steam autoclave

Answer

Ionizing radiation

Question 6

When donning a sterile gown and gloves using the closed-gloving technique, which part of the gown is considered non-sterile?

Accepted Answer

The back of the gown and the stockinette cuffs.

Answer

The front of the gown from chest to the level of the sterile field.

Answer

The sleeves from 2 inches above the elbow to the cuff.

Answer

The entire outer surface of the gown once it is tied.