CER Endoscope Sterilization Methods 2

Question 1

Which sterilization method uses peracetic acid as the active sterilant for heat-sensitive endoscopes?

Accepted Answer

STERIS System 1E

Answer

STERRAD system

Answer

Ethylene oxide (EO)

Answer

Vaporized hydrogen peroxide (VHP)

Question 2

What is the minimum concentration of peracetic acid required for sterilization in the STERIS System 1E?

Accepted Answer

0.35%

Answer

0.1%

Answer

0.2%

Answer

0.5%

Question 3

Ethylene oxide sterilization requires which post-sterilization step before an endoscope is safe to use?

Accepted Answer

Aeration to remove toxic residuals

Answer

Rinsing with sterile water

Answer

UV light exposure

Answer

Alcohol wipe-down

Question 4

A flexible endoscope cannot withstand steam sterilization primarily because of:

Accepted Answer

Heat sensitivity of materials and adhesives

Answer

Incompatibility with moisture

Answer

Risk of channel blockage from condensation

Answer

Corrosion of metal components

Question 5

Vaporized hydrogen peroxide (VHP) sterilization is contraindicated for endoscopes with long narrow lumens because:

Accepted Answer

Hydrogen peroxide condenses and loses efficacy in narrow channels

Answer

VHP cannot penetrate cellulosic materials

Answer

VHP reacts with stainless steel

Answer

The process temperature is too high for endoscopes

Question 6

Which sterilization parameter is NOT part of the Spaulding classification framework for determining the required level of reprocessing?

Accepted Answer

Material composition of the device

Answer

Intended use of the device

Answer

Body site contacted by the device

Answer

Risk of infection associated with device use

Question 7

After sterilization using the STERIS System 1E, endoscopes must be:

Accepted Answer

Used immediately or stored in sterile packaging

Answer

Stored dry in a sealed container for up to 30 days

Answer

Rinsed with tap water before use

Answer

Re-packaged and resterilized if not used within 24 hours