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  • Title: Deficiencies of automatic endoscopic reprocessors: a method to achieve high-grade disinfection of endoscopes.
    Author: Ido K, Ishino Y, Ota Y, Kihira K, Taniguchi Y, Saifuku K, Satoh K, Kawamoto C, Hayashi M, Kimura K.
    Journal: Gastrointest Endosc; 1996 Nov; 44(5):583-6. PubMed ID: 8934166.
    Abstract:
    BACKGROUND: We show that disinfection using the automatic endoscopic reprocessor is not complete and propose a method for high-grade disinfection of endoscopes. METHODS: We used an automatic endoscopic reprocessor, Pyser System 83, and 2% glutaraldehyde. After each endoscopic procedure, the endoscopes were divided into three groups. Endoscopes in group A were washed only by the reprocessor. Group B endoscopes were washed by the reprocessor after the connectors were soaked in glutaraldehyde for 5 minutes. The channels, valves, connecting sections of group C endoscopes, and the connectors of the machine were sprayed with glutaraldehyde before machine-washing. Swabs were taken from all 13 parts of each endoscope and machine for microbiologic culture. RESULTS: Six endoscopes were positive, cumulatively, for bacterial contamination in group A. Among group B endoscopes, one remained contaminated. No endoscope was positive in group C. The difference between group A and C was statistically significant (p < .05). CONCLUSIONS: Machine washing by automatic endoscopic reprocessors may not achieve complete disinfection. Additional procedures are necessary. High-grade disinfection of the connectors is critical. Disinfection of the interface between the connectors is important.
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