IBP Monitoring
15-24
Ethylene oxide (ETO) Disinfection Procedure
1. Unplug the female luer on the proximal connector before the ETO disinfection
cycle. Failure to do this will result in damage to the ICT/B or even disable it.
2. The luer must be open to allow the incoming and the outgoing of ETO gas.
3. Coil the ICT/B and put it in a package filled with ETO. The package shall be
indicated by an approved disinfection mark.
4. Disinfection—The disinfection procedure should be accepted by the hospital
staff responsible for disinfection. Follow the manufacturer's instructions for
disinfection.
Use the following as a guide only. According to the hospital regulations on
disinfection, the qualified ETO disinfection parameters are listed below.
Sterilizer make and mode AMSCO Eagle 2000
Prevacuum 15 minutes, 24 inches Hg
Relative humidity 40%
Temperature 140℉
ETO mix 12:88
Gas pressure 8 Pa
Exposure time 1 hour and 45 minutes
Post Vacuum 15 minutes, 24 inches Hg
Aeration Cycle 12 hours
Calculated ETO Concentration 600mg/l
Liquid Disinfection Procedure
To prevent liquids from entering the female luer on the electrical connector, a male
plug may be used. But this plug must be removed during normal use and the ETO
disinfection.
1. Rinse and soak the catheter transducer in the glutaraldehyde solution, following
the instructions provided by manufacturer of the chemical agent. Note that
disinfection is not equivalent to sterilization, and you must refer to the
manufacturer’s instructions to see the effect of the glutaraldehyde solution.
2. Before using the disinfected catheter transducer, rinse with pyrogen-free, sterile
distilled water or saline solution recommended by the disinfectant
manufacturer.
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