Sterilization第 45 / 100 题
Why must every ethylene oxide load undergo an aeration phase before items are released?
a.Residual ethylene oxide absorbed into plastics and rubber is toxic and must be driven off to protect patients and staff
b.Aeration completes the microbial kill that the exposure phase started
c.Aeration restores the humidity that was removed during the cycle
d.Aeration is required only for loads that contain implants
解析
Ethylene oxide is a recognized carcinogen and irritant that is absorbed by polymers, so mechanical aeration at elevated temperature is required to reduce residuals to safe levels before handling or patient contact. Aeration times of about 8 to 12 hours or more are typical and are set by the device and sterilizer manufacturers. The kill occurs during exposure, not aeration, and the requirement applies to every load regardless of contents.
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