Related Experiment Video

Updated: Aug 18, 2026

Murine Oropharyngeal Aspiration Model of Ventilator-associated and Hospital-acquired Bacterial Pneumonia
04:32

Murine Oropharyngeal Aspiration Model of Ventilator-associated and Hospital-acquired Bacterial Pneumonia

Published on: June 28, 2018

Acinetobacter baumannii ventilator-associated pneumonia: epidemiological and clinical findings

José Garnacho-Montero1, C Ortiz-Leyba, Esteban Fernández-Hinojosa

  • 1Intensive Care Unit, Hospital Universitario Virgen del Rocío, 41013 Seville, Spain. jose.garnacho.sspa@juntadeandalucia.es

Intensive Care Medicine
|March 24, 2005
PubMed
Abstract

Insights

Prior antibiotic exposure predicts Acinetobacter baumannii ventilator-associated pneumonia (VAP). Imipenem resistance is linked to prior imipenem use. Initial antibiotic choice is crucial for VAP outcomes.

Area of Science:

  • Infectious Diseases
  • Critical Care Medicine
  • Microbiology

Background:

  • Ventilator-associated pneumonia (VAP) poses a significant challenge in intensive care units.
  • Acinetobacter baumannii is a common and often drug-resistant pathogen causing VAP.
  • Understanding predictors for A. baumannii VAP, especially imipenem-resistant strains, is critical for patient management.

Purpose of the Study:

  • To identify prognostic factors and predictors for A. baumannii isolation in VAP.
  • To specifically analyze these factors in imipenem-resistant A. baumannii VAP episodes.

Main Methods:

  • Prospective data collection of VAP episodes.
  • Retrospective retrieval of risk factor information.
  • Analysis of 81 patients with microbiologically confirmed VAP (41 A. baumannii, 26 imipenem-resistant).

Main Results:

  • Prior antibiotic use was associated with A. baumannii VAP (OR 14).
  • Prior imipenem exposure predicted imipenem-resistant A. baumannii isolation (OR 4).
  • Higher Sequential Organ Failure Assessment (SOFA) scores predicted mortality (OR 1.22), while adequate empirical therapy was protective (OR 0.067).

Conclusions:

  • Previous antimicrobial exposure is an independent predictor for developing A. baumannii VAP.
  • The prognosis for A. baumannii VAP is similar to VAP caused by other pathogens.
  • The choice of initial antibiotic therapy is vital for VAP management.

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