Résumé
La prise en charge d’infections secondaires à des bactéries multi- ou hautement résistantes aux antibiotiques chez les patients de réanimation est un challenge permanent pour les réanimateurs et représente un problème de santé publique. La colonisation par ces bactéries d’origine exogène ou endogène constitue une étape préalable à la survenue d’infections chez des patients souvent immunodéprimés et bénéficiant de procédures invasives. La survenue d’une infection est dépendante de la relation hôte-pathogène chez chaque individu et est favorisée par le niveau d’abondance relative des bactéries multirésistantes suite à une modification du microbiote intestinal. Les stratégies de prévention des infections associées aux soins en réanimation doivent intégrer parallèlement la maîtrise de la pression de colonisation en réduisant la transmission croisée par l’application des précautions standard et la maîtrise de la pression de sélection par des prescriptions raisonnées et réduites d’antibiotiques. Les techniques de décolonisation peuvent constituer une approche préventive complémentaire intéressante pour les patients de réanimation. Elles doivent être envisagées dans le cadre d’une politique globale associée aux deux mesures précédemment citées.
Abstract
The treatment of infections related to multidrug resistant bacteria is a major issue in the intensive care unit. Colonization due to endogenous or exogenous bacteria represents a first step before infection in critically ill patients, in whom immunosuppression and invasive devices are common. The occurrence of infection depends on the relationship between host and bacteria, and is favored by the quantity of multidrug resistant pathogens after a modification of the gut microbiota. Strategies for the prevention of healthcare-associated infections should include the reduction of colonization pressure, by measures aiming at reducing cross-transmission of multidrug resistant bacteria, and the reduction of selection pressure by reducing antimicrobial treatment. Decolonization may be an interesting complementary method for critically ill patients, and should be used as a part of a global approach including the above-cited strategies.
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Cet article correspond à la conférence faite par l’auteur au congrès de la SRLF 2015 dans la session : Infections nosocomiales : les flores au centre du problème.
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Legeay, C., Bourigault, C., Kouatchet, A.T. et al. De la colonisation à l’infection par des bactéries multirésistantes aux antibiotiques : identification et maîtrise du risque chez les patients hospitalisés en réanimation. Réanimation 24 (Suppl 2), 297–303 (2015). https://doi.org/10.1007/s13546-014-1011-9
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DOI: https://doi.org/10.1007/s13546-014-1011-9