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  1. Routine disinfection of patients'environmental surfaces. Myth or reality ?

    Article - En anglais

    We have evaluated the need for daily disinfection of environmental surfaces not contaminated by biological fluids, in patient areas of a medical unit with two wings [North (N) and South (S) ] at the University Hospitals of Geneva, Switzerland.

    Weekly bacteriological monitoring of surfaces was carried out at random (N=1356 samples).

    In the S wing (control), we used detergent/disinfectant for daily cleaning of the floors and furniture.

    In the N wing we began by using a detergent for floors and furniture ; after four weeks the results suggested changing to a rotation of detergent, dust attracting disposable dry mops and disinfectant.

    During this period the furniture was cleaned with an active oxygen-based compound.

    The average differences in contamination before and after cleaning floors were (mean reduction in bacterial counts and 95% confidence intervals ; CI95) : disposable mops : 92.7 cfu/24 cm2 (CI95 ; 74-112), active oxygen based compound 111.1 (90-133), and quaternary ammonium compound - 0.6 (-27-26).

    Use of detergent alone was associated with a significant increase in bacterial colony counts : on average by 103.6 cfu (CI95 73-134).

    The quaternary ammonium compound was inadequate for disinfecting bathrooms and toilets but the active oxygen based compound was satisfactory.

    For furniture, there was a significant reduction in bacterial counts with both the methods using disinfectants. (...)

    Mots-clés Pascal : Désinfection, Surface, Hôpital, Prévention, Infection nosocomiale, Détergent, Désinfectant, Efficacité, Exploration microbiologique, Incidence, Hygiène, Chambre hôpital

    Mots-clés Pascal anglais : Disinfection, Surface, Hospital, Prevention, Nosocomial infection, Detergent, Disinfecting agent, Efficiency, Microbiological investigation, Incidence, Hygiene

    Logo du centre Notice produite par :
    Inist-CNRS - Institut de l'Information Scientifique et Technique

    Cote : 99-0335332

    Code Inist : 002B05A02. Création : 16/11/1999.