Disinfection of Endoscope by EOW and Glutaraldehyde:A Clinical Observation / 中华医院感染学杂志

ABSTRACT

OBJECTIVE To know the disinfection efficacy of electrolyzed oxidizing water(EOW) and glutaraldehyde on clinical used gastroscope and enteroscope in our hospital and to analyze their stability and probable harm.METHODS The gastroscope and enteroscope before and after use on randomly selected outpatients and inpatients were examined on their contamination,and the efficacy of EOW was compared with that of glutaraldehyde.RESULTS After using EOW and glutaraldehyde to disinfect the gastroscope and enteroscope the former showed that its killing rate on commonly encountered pathogens for 1 min was 93.75-98.22%,for 3 min was 81.20-89.29%,and for 5 min was 100.00%;the latter showed that its killing rate for 3 min was 81.20-89.29%,for 5 min was 90.38-93.04%,and for 10 min was 99.92-99.96%.EOW was non-irritative to mucosa,and didn′t cause allergic reaction,but its stability was poor.The glutaraldehyle could bring some side effects,such as some allergy,and mucosa stimulation.CONCLUSIONS It only needs 3-5 min for EOW to kill polluted bacteria on gastroscope and enteroscope to attain the disinfection eligibility,but glutaraldehyde needs more than 10 min to get to the disinfection eligibility.The effect of EOW is strong,rapid,active and environment-safe,it is worthy of application,but it must be applied immediately as soon as possible after production.The use of glutaraldehyde must strengthen the measures of personal protection.