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Murine Oropharyngeal Aspiration Model of Ventilator-associated and Hospital-acquired Bacterial Pneumonia
Published on: June 28, 2018
Ventilator-associated pneumonia in long-term ventilator-assisted individuals
M E García-Leoni1, S Moreno, F García-Garrote
1Infectious Disease Unit, Department of Internal Medicine, Hospital Nacional de Parapléjicos, Toledo, Spain. eugega@yahoo.com
Spinal Cord
|April 21, 2010
Summary
Ventilator-associated pneumonia (VAP) affects long-term ventilated patients, with hypoalbuminemia and antacid use as key risk factors. While VAP is common in this group, mortality rates remain low, indicating effective management strategies.
Area of Science:
- Critical Care Medicine
- Infectious Diseases
- Pulmonology
Background:
- Limited data exists on pneumonia characteristics in long-term ventilator-assisted individuals.
- Ventilator-associated pneumonia (VAP) is a significant concern in this patient population.
- This study addresses the scarcity of information regarding VAP in chronically ventilated patients.
Purpose of the Study:
- To evaluate the incidence of VAP in long-term ventilator-dependent patients.
- To identify independent risk factors associated with VAP development.
- To assess the outcomes, including mortality, of VAP in this cohort.
Main Methods:
- Prospective follow-up of 100 consecutive patients in a chronic ventilator-dependent unit.
- VAP diagnosis based on new lung infiltrates and purulent tracheal aspirates.
- Microbiological confirmation through blood cultures or quantitative tracheal/mini-BAL cultures.
Main Results:
- 32 VAP episodes occurred in 27 patients (1.74 episodes per 1000 ventilation days).
- Independent risk factors for VAP included hypoalbuminemia, antacid administration, and prolonged mechanical ventilation.
- Pseudomonas aeruginosa, MRSA, and Acinetobacter baumannii were the most common pathogens; mortality related to VAP was low (11%).
Conclusions:
- Long-term ventilated patients face a substantial risk of developing VAP.
- Despite the risk, mortality associated with VAP in this population is notably low.
- Findings highlight the importance of monitoring and managing VAP in chronic ventilation settings.
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