Surgical Asepsis & Sterilization Flashcards

Which sterilization method is most appropriate for heat-sensitive fiber optic cables?

Answer: Ethylene oxide (EtO) gas

Ethylene oxide gas sterilization is used for heat-sensitive items like fiber optic cables because it operates at low temperatures.

What is the minimum exposure time for gravity displacement steam sterilization of wrapped instruments at 250°F (121°C)?

Answer: 30 minutes

Gravity displacement autoclaves require 30 minutes at 250°F (121°C) for wrapped instrument packs.

A scrub technician notices a package has a torn wrapper before opening. The correct action is to:

Answer: Re-wrap and re-sterilize the package

A compromised package wrapper indicates loss of sterility; the item must be re-wrapped and re-sterilized.

Which of the following is NOT a parameter monitored by a Bowie-Dick test?

Answer: Sterilant concentration in EtO cycles

The Bowie-Dick test is specific to prevacuum steam sterilizers and evaluates air removal and steam penetration, not EtO concentration.

When setting up a sterile field, items should be placed on the sterile drape at what distance from the edge?

Answer: At least 2 inches (5 cm)

The outer 1-inch (2.5 cm) border of a sterile drape is considered non-sterile; items must be kept at least 1 inch from the edge — some sources cite 2 inches for safety.

Hydrogen peroxide plasma sterilization is contraindicated for which type of item?

Answer: Cellulose-based (paper) packaging or items

Cellulose-based materials absorb hydrogen peroxide plasma and prevent sterilization from occurring, making them incompatible with this method.

Which action by the scrub technician is correct when passing a sterile item to the surgeon?

Answer: Hand the item handle-first while keeping hands below the surgeon's hands

Items should be passed handle-first to the surgeon, with the scrub technician's hands positioned below to avoid contamination.