Intensive Care Medicine

, Volume 35, Issue 9, pp 1518–1525

Incidence and risk factors for ventilator-associated pneumonia after major heart surgery

  • Javier Hortal
  • Maddalena Giannella
  • Maria Jesús Pérez
  • José Maria Barrio
  • Manuel Desco
  • Emilio Bouza
  • Patricia Muñoz
Original

DOI: 10.1007/s00134-009-1523-3

Cite this article as:
Hortal, J., Giannella, M., Pérez, M.J. et al. Intensive Care Med (2009) 35: 1518. doi:10.1007/s00134-009-1523-3

Abstract

Purpose

Major heart surgery (MHS) patients are a particularly high-risk population for nosocomial infections. Our objective was to identify risk factors for ventilator-associated pneumonia (VAP) in patients undergoing MHS.

Methods

Prospective study including 1,844 patients operated from 2003 to 2006.

Results

Overall 106 patients (140 episodes) developed one or more episodes of VAP (5.7%, 22.2 episodes per 1,000 days of mechanical ventilation). VAP incidence was 45.9% in those patients requiring more than 48 h of MV. Enterobacteriaceae (32.8), Pseudomonas aeruginosa (28.6%) and Staphylococcus aureus (27.1%, of which 65.8% were methicillin resistant) were the principal microorganisms causing VAP. The independent risk factors for VAP were: age >70, perioperative transfusions, days of mechanical ventilation, reintubation, previous cardiac surgery, emergent surgery and intraoperative inotropic support. Median length of stay in the ICU for patients who developed VAP or not was, respectively, 25.5 versus 3 days (P < 0.001), and mortality was, respectively, 45.7 versus 2.8% in both populations (P < 0.001). We developed a predictive preoperative score with a sensitivity of 93% and a specificity of 40%.

Conclusions

VAP is common in patients undergoing MHS that require more than 48 h of MV. In that “high-risk” population, innovative preventive measures should be developed and applied.

Keywords

Ventilator-associated pneumoniaHeart surgeryNosocomial infectionNosocomial pneumoniaRisk factors for ICU nosocomial infection

Copyright information

© Springer-Verlag 2009

Authors and Affiliations

  • Javier Hortal
    • 1
  • Maddalena Giannella
    • 2
  • Maria Jesús Pérez
    • 1
  • José Maria Barrio
    • 1
  • Manuel Desco
    • 3
  • Emilio Bouza
    • 2
    • 4
  • Patricia Muñoz
    • 2
    • 4
  1. 1.Department of AnesthesiaHospital General Universitario Gregorio MarañónMadridSpain
  2. 2.Department of Clinical Microbiology and Infectious DiseasesHospital General Universitario Gregorio MarañónMadridSpain
  3. 3.Department of Experimental MedicineHospital General Universitario Gregorio MarañónMadridSpain
  4. 4.CIBER de Enfermedades Respiratorias (CIBERES)BarcelonaSpain