AORN Sterilization 3

Question 1

Which action is taken when a biological indicator returns a positive result after a routine sterilization cycle?

Accepted Answer

Quarantine all items from that load and recall items already used

Answer

A positive BI result requires immediate quarantine of all items from the implicated load and recall of any items already distributed or implanted.

Question 2

What is the correct orientation for packages containing basins or bowls in a steam sterilizer?

Accepted Answer

Inverted with the open end facing down

Answer

Basins should be inverted or tilted to prevent water condensate from pooling inside, which could compromise sterility.

Question 3

Which parameter is NOT a critical variable in hydrogen peroxide plasma sterilization?

Accepted Answer

Humidity level inside the chamber

Answer

Unlike steam sterilization, H2O2 plasma processes require low moisture content — humidity in the chamber is controlled and minimized, not a variable affecting efficacy.

Question 4

When sterilizing implants, AORN recommends that biological indicator results be:

Accepted Answer

Confirmed negative before the implant is released for use

Answer

AORN and AAMI standards require that implants be quarantined until BI results confirm sterilization was achieved before release.

Question 5

What is the primary purpose of cleaning instruments BEFORE sterilization?

Accepted Answer

To eliminate bioburden that can shield microorganisms from the sterilant

Answer

Organic soil and debris create a physical barrier that prevents the sterilant from contacting microorganisms, making cleaning the most critical pre-sterilization step.

(AORN) Association of PeriOperative Registered Nurses Practice Test

(AORN) Association of PeriOperative Registered Nurses Practice Test

AORN Sterilization 3