CIS Sterilization Methods Questions and Answers 2

Question 1

What are the three critical parameters for effective steam sterilization?

Accepted Answer

Time, temperature, and pressure with saturated steam

Answer

Water, heat, and light

Answer

Chemical concentration, time, and humidity

Answer

Pressure, humidity, and airflow

Question 2

What is the difference between gravity displacement and prevacuum steam sterilizers?

Accepted Answer

Gravity relies on steam pushing air out by density, while prevacuum uses vacuum pumps to actively remove air

Answer

No functional difference

Answer

Prevacuum operates at lower temperatures

Answer

Gravity is faster

Question 3

What is ethylene oxide sterilization and when is it used?

Accepted Answer

A low-temperature chemical gas sterilization for heat-sensitive and moisture-sensitive items

Answer

A type of steam sterilization

Answer

Only for food products

Answer

A liquid immersion process

Question 4

How does hydrogen peroxide gas plasma sterilization work?

Accepted Answer

H2O2 vapor is injected into a vacuum chamber and converted to plasma by RF energy, creating reactive species

Answer

Uses heated hydrogen peroxide liquid

Answer

Combines H2O2 with steam

Answer

H2O2 as a surface disinfectant

Question 5

What is the purpose of the aeration phase in ETO sterilization?

Accepted Answer

To remove toxic ETO residuals from sterilized materials to safe levels

Answer

To dry instruments

Answer

To cool instruments

Answer

To verify sterilization success

Question 6

What is immediate-use steam sterilization (IUSS) and what are its limitations?

Accepted Answer

A shortened cycle for emergencies only, with limitations on storage, transport, and monitoring

Answer

The preferred method for all instruments

Answer

Faster and more effective than standard sterilization

Answer

For all instruments needing quick turnaround