Chapter 15: Low Temperature Sterilization
Which of the following processes is used for low-temperature sterilization:
Steam Sterilizer
Ethylene Oxide
Both a and b
Neither a or b
What is the minimum temperature required for ethylene oxide sterilization?
30 degree C
50 degree C
60 degree C
70 degree C
What is the minimum relative humidity required for ethylene oxide sterilization?
30%
40%
60%
80%
What is Sterility Assurance Level (SAL)?
The probability of a viable microorganism being present on a product unit after sterilization.
The number of viable microorganisms on a product unit after sterilization.
The level of exposure to a sterilizing agent that is required to achieve sterilization.
The level of PPE required for safe handling of sterilized materials.
What are the commonly used low temp sterilization methods?
Ethylene Oxide (EtO), Hydrogen Peroxide (H2O2), and Alcohol (C2H5OH)
Ethylene Oxide (EtO), Hydrogen Peroxide (H2O2), and Ozone (O3)
Ethylene Oxide (EtO), Carbon dioxide (CO2), and Nitrogen (N2)
Ethylene Oxide (EtO), Hydrochloric Acid (HCl), and Ozone (O3)
What are the Eight Basic Requirements related to low temp sterilization?
Efficacy, Safety, Exposure Monitoring, Sterilization, Material Compatibility, Adaptability, Safety Data Sheet (SDS), and Approval
Efficacy, Safety, Exposure Monitoring, Sterilization, Penetration, Material Compatibility, Adaptability, and Approval
Efficacy, Safety, Exposure Monitoring, Sterilization, Penetration, Material Compatibility, Adaptability, and Packaging
Efficacy, Safety, Exposure Monitoring, Sterilization, Penetration, Material Compatibility, Adaptability, and Aeration
Which sterilization method meets the required minimum SAL as outlined by the FDA, CDC, and other organizations?
All sterilization methods have the same minimum SAL requirement.
Ethylene Oxide (EtO)
Hydrogen Peroxide (H2O2)
Ozone (O3)
What should be used to access the effectiveness of a low temp sterilization process before releasing a load?
Sterility Assurance Level (SAL)
Eight Basic Requirements
Safety Data Sheet (SDS)
Sterilization Monitors: information from physical, chemical and biological indicators
What is the process by which Ethylene Oxide (EtO) kills microorganisms?
Oxidation
Reduction
Alkylation
Sterilization
What is the Permissible Exposure Limit (PEL) for Ozone (O3)?
0.1 ppm
1 ppm
10 ppm
100 ppm
The Time-weighted average is:
The amount of a substance employees can be exposed to over a one-hour day.
The amount of a substance employees can be exposed to over an eight-hour day.
The amount of a substance employees can be exposed to over a 24-hour day.
The amount of a substance employees can be exposed to without harm.
Which of the following should not be sterilized with EtO?
Heat and moisture sensitive devices
Liquids
Devices with energy sources
Leather items
How long does it take for EtO sterilization to complete?
1 hour
2 1/2 hours
4 hours
8 hours
What is aeration?
The process of injecting gas into a sterilization chamber.
The process of removing gas from a sterilization chamber.
The process of subjecting sterilized packages to moving air to remove toxic residuals.
The process of sterilizing a load.
Depending on the EtO sterilizer, what is the proper aeration time?
2-4 hours
4-6 hours
6-8 hours
8-12 hours
What is residual EtO?
The amount of EtO that remains inside a sterilization chamber.
The amount of EtO that remains in the air after sterilization.
Amount of EtO that remains inside materials after they are sterilized.
The amount of EtO that remains on CS techs hands after removing load
What is a written statement that provides detailed information about a chemical or toxic substance, including potential hazards and appropriate handling methods?
Safety Data Sheet (SDS)
Safety Data Bulletin (SDB)
Chemical Information Document (CID)
Hazard Inventory Form (HIF)
Which of the following are NOT compatible with Hydrogen Peroxide (H2O2)?
Liquids and powders
Fabrics and rubber
Materials that absorb liquids
A & C
At what concentration are H2O2 gas concentrations typically used in the H2O2 cycle?
5% to 10%
10% to 25%
25% to 50%
59% to 95%
Which of the following is NOT recommended for sterilization using ozone?
Sealed ampules
Natural rubber
Woven fabrics
all of the above
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