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  • Poster presentation
  • Open Access

Stenotrophomonas maltophilia in the respiratory tract of medical ICU patients

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Critical Care201115 (Suppl 1) :P182

  • Published:


  • Pneumonia
  • Respiratory Tract
  • Independent Risk Factor
  • Hospital Mortality
  • Sequential Organ Failure Assessment


Stenotrophomonas maltophilia can cause pneumonia in critically ill patients. The aim of the study was to investigate characteristics of critically ill patients with S. maltophilia isolated from the respiratory tract and to identify risk factors for S. maltophilia pneumonia and ICU mortality and to analyze antibiotic susceptibility of S. maltophilia.


A retrospective analysis of medical records (November 2005 to December 2009) for three medical ICUs in a university hospital.


Sixty-four patients with S. maltophilia isolated from the respiratory tract (median age 66.0 years). Thirty-six patients fulfilled the criteria for diagnosis of pneumonia. Mechanical ventilation was needed in 51 patients. A significantly higher lung injury score was observed in patients with pneumonia compared with patients with colonization (P = 0.010). Independent risk factors for S. maltophilia-related pneumonia were higher Sequential Organ Failure Assessment (SOFA) score (P = 0.009) and immunosuppression (P = 0.014). Patients with S. maltophilia pneumonia had higher ICU mortality within a follow-up of 28 days (P = 0.040) and higher hospital mortality (P = 0.018) than patients with colonization. The highest antibiotic susceptibility rates were observed to trimethoprim-sulfamethoxazole, tigecycline, and moxifloxacin. A higher SOFA score when S. maltophilia was isolated (P = 0.001) and development of renal failure (P = 0.021) were independent risk factors for ICU mortality.


Higher SOFA score and immunosuppression are independent risk factors for S. maltophilia pneumonia. Patients with pneumonia caused by S. maltophilia have a significantly higher ICU mortality within a follow-up of 28 days, hospital mortality and lung injury score compared with patients with S. maltophilia colonization.

Authors’ Affiliations

Klinikum Rechts der Isar, München, Germany


© Saugel et al. 2011

This article is published under license to BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.