Ethylene Oxide Sterilization and Safety Standards

Exposure time for items sterilized using EO sterilization is 2.5 hours.

• This duration is necessary to achieve effective sterilization.

• The exposure time is only 1 hour.

• Items can be sterilized in 3 hours.

• Sterilization is achieved instantly.

There should be at least 10 air exchanges per hour in a room that has an ethylene oxide (EO) sterilizer.

• This ensures proper ventilation and safety during the sterilization process.

• This helps in reducing the temperature in the room.

• This minimizes the risk of fire hazards.

• This increases the humidity levels in the room.

The Occupational Safety and Health Administration (OSHA) sets exposure standards for chemical sterilants.

• These standards are vital for ensuring workplace safety.

• These standards are optional and not enforced.

• These standards are only applicable in laboratories.

• These standards are outdated and no longer relevant.

Personal monitoring requires the device to be affixed directly to the employee's clothing in the breathing zone.

• This ensures accurate monitoring of exposure to sterilants.

• This prevents the device from being lost or damaged.

• This allows for easier communication between employees.

• This reduces the need for regular maintenance of the device.

The U.S. Food and Drug Administration (FDA) recommends that sterilants be rigorously tested before being marketed.

• This testing is essential to ensure the safety and efficacy of sterilants.

• Sterilants do not require any testing before marketing.

• The FDA does not regulate sterilants at all.

• Testing is only necessary for sterilants used in hospitals.

Geobacillus stearothermophilus is a bacterial spore used to test hydrogen peroxide (H₂O₂) sterilization cycles.

• It is a type of virus used in sterilization.

• It serves as a biological indicator for H₂O₂ sterilization.

• It is a chemical used to enhance sterilization.

• It is a method for measuring temperature during sterilization.

The aeration method of low-temperature sterilization uses gas cartridges for a sterilant.

• This method is essential for effective sterilization without damaging heat-sensitive items.

• This method is primarily used for high-temperature sterilization processes.

• This method requires the use of liquid sterilants for effectiveness.

• This method is only applicable to metal instruments.

The aeration phase of an EO sterilizer cycle immediately follows the sterilization phase.

• This phase is crucial for removing residual sterilant from the items.

• This phase is used to increase the temperature of the items.

• This phase is designed to cool down the sterilized items.

• This phase is for packaging the sterilized items.

The probability of a viable microorganism being present on an item after sterilization is the sterility assurance level.

• This level indicates the effectiveness of the sterilization process.

• This level measures the temperature during sterilization.

• This level determines the duration of the sterilization cycle.

• This level assesses the type of microorganisms present.

The bacterial spore used to test EO sterilization cycles is Bacillus atrophaeus.

• This spore is a standard biological indicator for EO sterilization.

• This spore is a common food preservative.

• This spore is used to enhance bacterial growth in laboratories.

• This spore is a type of antibiotic.