Infection prevention during anaesthesia ventilation by the use of breathing system filters (BSF): Joint recommendation by German Society of Hospital Hygiene (DGKH) and German Society for Anaesthesiology and Intensive Care (DGAI)
- PMID: 20941333
- PMCID: PMC2951096
- DOI: 10.3205/dgkh000156
Infection prevention during anaesthesia ventilation by the use of breathing system filters (BSF): Joint recommendation by German Society of Hospital Hygiene (DGKH) and German Society for Anaesthesiology and Intensive Care (DGAI)
Abstract
An interdisciplinary working group from the German Society of Hospital Hygiene (DGKH) and the German Society for Anaesthesiology and Intensive Care (DGAI) worked out the following recommendations for infection prevention during anaesthesia by using breathing system filters (BSF). The BSF shall be changed after each patient. The filter retention efficiency for airborne particles is recommended to be >99% (II). The retention performance of BSF for liquids is recommended to be at pressures of at least 60 hPa (=60 mbar) or 20 hPa above the selected maximum ventilation pressure in the anaesthetic system. The anaesthesia breathing system may be used for a period of up to 7 days provided that the functional requirements of the system remain unchanged and the manufacturer states this in the instructions for use.THE BREATHING SYSTEM AND THE MANUAL VENTILATION BAG ARE CHANGED IMMEDIATELY AFTER THE RESPECTIVE ANAESTHESIA IF THE FOLLOWING SITUATION HAS OCCURRED OR IT IS SUSPECTED TO HAVE OCCURRED: Notifiable infectious disease involving the risk of transmission via the breathing system and the manual bag, e.g. tuberculosis, acute viral hepatitis, measles, influenza virus, infection and/or colonisation with a multi-resistant pathogen or upper or lower respiratory tract infections. In case of visible contamination e.g. by blood or in case of defect, it is required that the BSF and also the anaesthesia breathing system is changed and the breathing gas conducting parts of the anaesthesia ventilator are hygienically reprocessed.Observing of the appropriate hand disinfection is very important. All surfaces of the anaesthesia equipment exposed to hand contact must be disinfected after each case.
Von einer gemeinsamen Arbeitsgruppe der Deutschen Gesellschaft für Krankenhaushygiene e.V. (DGKH) und der Deutschen Gesellschaft für Anästhesiologie und Intensivmedizin e.V. (DGAI) wurden nachfolgende Grundsätze zur Infektionsprävention bei der Narkosebeatmung erarbeitet. Der Atemsystemfilter (ASF) ist nach jedem Patienten zu wechseln. Für die Abscheideleistung des ASF werden für luftgetragene Partikel Filtrationswerte >99%, für Flüssigkeit Retentionswerte bis zu Drücken von mindestens 60 hPa (=60 mbar) oder 20 hPa oberhalb des gewählten maximalen Beatmungsdrucks im Narkosesystem empfohlen.
Das Narkoseschlauchsystem kann bis zu 7 Tagen eingesetzt werden, sofern seine Funktionalität weiterhin gegeben ist und der Hersteller das in der Gebrauchsanweisung erlaubt.
Der sofortige Wechsel von Schlauchsystem und Handbeatmungsbeutel nach der Narkose ist erforderlich bei Vorliegen oder Verdacht einer meldepflichtigen Infektionskrankheit mit Übertragungsmöglichkeit (z.B. Tuberkulose, akute Virushepatitis, Masern, Virusgrippe), bei Infektion und/oder Kolonisation der Atemwege mit multiresistenten Erregern oder bei Infektion der oberen bzw. tiefen Atemwege.
Ebenso sind bei sichtbarer Verschmutzung, z.B. Blut, oder bei Defekt der ASF und das Narkoseschlauchsystem zu wechseln und die Atemgas führenden Komponenten des Narkosegeräts hygienisch aufzubereiten.
Die indikationsgerechte Durchführung der Händedesinfektion besitzt einen hohen Stellenwert.
Alle Handkontaktflächen an der Narkosegerätschaft sind nach jedem Patienten desinfizierend aufzubereiten.
Anmerkung: Die deutschsprachige Fassung der Empfehlung befindet sich in der Zeitschrift "Anästhesiologie Intensivmedizin Notfallmedizin Schmerztherapie" im Druck.
Keywords: changing of anaesthesia breathing system; disinfection; hand contact surfaces; requirements for breathing system filters.
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