Methicillin-resistant Staphylococcus aureus prolongs intensive care unit stay in ventilator-associated pneumonia, despite initially appropriate antibiotic therapy

Critical Care Medicine
Andrew F ShorrJean Chastre

Abstract

To determine the impact of methicillin-resistant Staphylococcus aureus (MRSA) on length of stay in the intensive care unit (ICU) for patients with ventilator-associated pneumonia (VAP) and to control for the effect of initially inappropriate antibiotic treatment on outcomes by focusing only on persons who were given appropriate antibiotic therapy for their infection. Retrospective analysis of pooled, patient-level data from multiple clinical trials in VAP. Multiple ICUs in France. Persons with bronchoscopically confirmed VAP due to either MRSA or methicillin-susceptible S. aureus (MSSA) and who received initially appropriate antibiotic treatment. All persons with MRSA VAP received vancomycin (15 mg/kg intravenously, twice daily). None. We compared patients with MRSA VAP to persons with MSSA VAP. ICU length of stay represented the primary end point and ICU-free days served as a secondary end point. We recorded information regarding multiple confounders, including demographics, reasons for ICU admission and mechanical ventilation (MV), severity of illness at both ICU admission and time of diagnosis of VAP, and duration of mechanical ventilation before and following the onset of VAP. The final cohort included 107 patients, and one...Continue Reading

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