How long is the ethylene oxide sterilisation process?

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Multiple Choice

How long is the ethylene oxide sterilisation process?

Explanation:
Ethylene oxide sterilisation is a gas-based process that requires multiple stages: conditioning, gas exposure (dwell), and thorough aeration to remove residual EO. Because EO is toxic and penetrates packaging and lumens slowly, there must be enough time for the gas to diffuse into all parts of the instrument set and then for the remaining gas to off-gas safely. This combination of diffusion and complete aeration makes the full cycle quite lengthy, typically spanning about 12 to 24 hours in routine hospital practice. Shorter times wouldn’t allow adequate exposure and aeration, while much longer cycles would unnecessarily delay processing.

Ethylene oxide sterilisation is a gas-based process that requires multiple stages: conditioning, gas exposure (dwell), and thorough aeration to remove residual EO. Because EO is toxic and penetrates packaging and lumens slowly, there must be enough time for the gas to diffuse into all parts of the instrument set and then for the remaining gas to off-gas safely. This combination of diffusion and complete aeration makes the full cycle quite lengthy, typically spanning about 12 to 24 hours in routine hospital practice. Shorter times wouldn’t allow adequate exposure and aeration, while much longer cycles would unnecessarily delay processing.

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