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Thursday, January 28, 2016

MAKE OURSELVES AWARE OF THE DISINFECTANTS USED IN OUR HOSPITALS: ETHYLENE OXIDE



💥Sterilant of choice for sterilizing heat labile medical equipment

💥e.g. plastic and rubber items, blankets,crude drugs and powders,glass ,metal, paper,fabrics 

💥Also used for sterilizing heart-lung machines, respirators, sutures

💥Extremely penetrant, non corrosive,effective 

💥Toxic, irritant, mutagenic and a suspected carcinogen 

💥Explosive, except when mixed with other gases like Carbon dioxide or Nitrogen in the ratio 1:10 (require expensive equipment)

💥Usually used at 55-60 degree at about 33% humidity

💥Items to be sterilized should be clean and packaged with polythene or polypropylene (don't use nylon)

💥The sterilizing process should be monitored by spore tests +/- indicator tests

💥As ETO and its residues are toxic and irritant, materials exposed should be thoroughly aerated before use. Aeration at 55 degree greatly enhances elution of ETO

💥Control limit of exposure of individuals at work is 1 ppm ETO over an 8 hour time weighted averaged period

💥Irradiated articles should not be subsequently treated with ETO, unless they are known to be safe after such treatment 


Reference :

Hospital Associated Infections; Epidemiology, Prevention and Control , Nita Patwardhan , p:71-72

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