PREdiction of CEphalosporinase Producing Enterobacteria During Ventilator-associated Pneumonia for Therapeutic Stewardship

Ventilator-associated pneumonia is the leading cause of nosocomial infection in the ICU. Cephalosporinase-producing Enterobacteriaceae have an increasing incidence. Infections in cephalosporinase-producing patients require the use of Cefepime during probabilistic antibiotic therapy, the repeated use of which will lead to a significant risk of selection of resistant mutants. The involvement of cephalosporinases being infrequent, the prediction of their presence during a VAP would make it possible to reduce the consumption of Cefepime and thus to take part in the prevention of selection of bacterial mutants resistant to beta-lactams. The main objective of the research is to determine the risk factors for the involvement of cephalosporinase-producing enterobacteria during episodes of ventilator-associated pneumonia (VAP) in hospitalized patients. The secondary objectives are to describe the epidemiology of cephalosporinase-producing enterobacteria in the ICU and to compare the risk factors for the presence of a cephalosporinase-producing germ not without its production being derepressed with those present in situations of cephalosporinase derepression.