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Updated: May 24, 2026

Murine Oropharyngeal Aspiration Model of Ventilator-associated and Hospital-acquired Bacterial Pneumonia
Published on: June 28, 2018
Ventilator-associated pneumonia: a review
Madiha Ashraf1, Luis Ostrosky-Zeichner
1Division of Infectious Diseases, University of Texas Medical School at Houston, Houston, TX 77030, USA. madiha.ashraf@uth.tmc.edu
Ventilator-associated pneumonia (VAP) is a common ICU infection. Early diagnosis, appropriate antibiotic use with de-escalation, and proven preventive strategies are crucial for reducing VAP
Area of Science:
- Critical Care Medicine
- Infectious Diseases
- Pulmonology
Background:
- Ventilator-associated pneumonia (VAP) is the most frequent intensive care unit (ICU) infection, causing significant morbidity, mortality, and increased antibiotic use.
- VAP contributes to 25% of ICU infections and 50% of antibiotic prescriptions in mechanically ventilated patients, imposing a substantial financial burden.
- Attributable mortality for VAP ranges from 8% to 15%, highlighting the critical need for effective management and prevention strategies.
Purpose of the Study:
- To review recent advancements in VAP epidemiology, risk factors, diagnostics, and management.
- To emphasize evolving diagnostic techniques and preventive measures for VAP.
- To provide actionable insights for healthcare professionals managing VAP in ICUs.
Main Methods:
- Review of current literature on VAP epidemiology and trends.
- Analysis of modifiable risk factors associated with VAP development.
- Evaluation of contemporary diagnostic approaches and treatment guidelines.
- Assessment of evidence-based preventive strategies for VAP.
Main Results:
- No definitive gold standard exists for VAP diagnosis; quantitative cultures are recommended before antibiotic initiation.
- Empirical broad-spectrum antibiotic therapy is advised upon suspicion, followed by de-escalation based on results or clinical response.
- Optimal antibiotic treatment duration is suggested at 8 days, with exceptions for specific pathogens or comorbidities.
- Proven preventive measures include noninvasive ventilation, semirecumbent positioning, subglottic secretion drainage, and chlorhexidine oral care.
Conclusions:
- Effective VAP management requires a multi-faceted approach encompassing timely diagnosis, judicious antibiotic use, and de-escalation.
- Preventive strategies are paramount in reducing the incidence and impact of VAP in critically ill patients.
- Adherence to evidence-based preventive measures can significantly decrease VAP-associated morbidity and mortality.
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