CRCST Sterilization Methods 4

Question 1

A flash (IUSS) steam sterilization cycle is MOST appropriate for which scenario?

Accepted Answer

Emergency processing of a dropped unwrapped instrument needed immediately

Answer

Immediate-use steam sterilization (IUSS) is reserved for emergency situations when an unwrapped instrument is needed immediately and no sterile replacement is available.

Question 2

What is the minimum temperature required for a gravity displacement steam sterilization cycle for wrapped goods?

Accepted Answer

121°C (250°F)

Answer

Gravity displacement steam sterilization for wrapped goods requires a minimum temperature of 121°C (250°F) with appropriate exposure time.

Question 3

Which organization publishes the ANSI/AAMI ST79 standard that governs steam sterilization practices?

Accepted Answer

AAMI

Answer

ANSI/AAMI ST79 is published by the Association for the Advancement of Medical Instrumentation (AAMI) and is the primary U.S. standard for steam sterilization.

Question 4

During vaporized hydrogen peroxide (VHP) sterilization, what byproducts are produced at the end of the cycle?

Accepted Answer

Water and oxygen

Answer

VHP breaks down into water (H2O) and oxygen (O2) at the end of the cycle, leaving no toxic residues on processed items.

Question 5

Which condition would INVALIDATE a sterilization load and require reprocessing?

Accepted Answer

A wet pack discovered after sterilization

Answer

Wet packs indicate that steam condensate has compromised package integrity, potentially contaminating contents, and the load must be considered non-sterile.

(CRCST) Certified Registered Central Service Technician Exam Practice Test

(CRCST) Certified Registered Central Service Technician Exam Practice Test

CRCST Sterilization Methods 4