Medical Device Reprocessing Association of Ontario (MDRAO) Practice Exam

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What is a significant characteristic of ETO sterilization?

Requires high temperature
Is a low temperature option
Uses radiation
Involves boiling

The correct answer is: Is a low temperature option

Ethylene oxide (ETO) sterilization is recognized for its ability to effectively sterilize heat-sensitive medical devices and materials without subjecting them to high temperatures. This characteristic makes it particularly valuable in medical settings where certain instruments cannot withstand traditional high-temperature steam sterilization methods. ETO sterilization typically operates at low temperatures, generally ranging from 30 to 60 degrees Celsius, making it suitable for a wide variety of items, including plastics and electronic components that would be damaged by heat. Its effectiveness and ability to penetrate complex devices differentiate it from other sterilization methods. While high temperatures, radiation, or boiling are related to other sterilization processes, they do not accurately describe the mechanism or conditions of ETO sterilization, further emphasizing the uniqueness of this method in reprocessing medical devices.