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[Bacterial flora of the respiratory tract in artificially ventilated patients]
B Jarosz-Cencora1, K Fabirkiewicz, M Bulanda
1Katedry i Zakładu Anestezjologii i Intensywnej Terapii AM w Krakowie.
Abstract:
Patients treated in ICUs are at particular risk for nosocomial infections. Within this group a ventilator-associated pneumonia still constitutes a major problem. Highly virulent hospital strains, existing in ICUs, can colonize patients' upper respiratory tract. Therefore this study aimed at analysing the organisms found in patients who required mechanical ventilation in ICUs. The same types of bacteria with the same (high) rate colonized upper airways, trachea and stomach of patients treated at the intensive Care Unit. It is suggested that the presence of Gram negative bacilli may serve as a marker of possible pneumonia in artificially ventilated patients. It is also important to check whether the organisms isolated from the larynx or trachea are only colonizing agents or are representative for the etiologic factors of pneumonia. Antibiotic therapy based on the sensitivity tests could be inadequate.
Insights
Ventilator-associated pneumonia (VAP) is a significant risk for ICU patients. This study found similar bacteria colonizing airways and stomachs, suggesting Gram-negative bacilli may indicate VAP risk.
Area of Science:
- Critical Care Medicine
- Infectious Diseases
- Microbiology
Context:
- Intensive Care Units (ICUs) pose high risks for nosocomial infections.
- Ventilator-associated pneumonia (VAP) remains a critical challenge in ICUs.
- Virulent hospital strains can colonize the upper respiratory tract of ICU patients.
Purpose:
- To analyze microbial organisms in patients requiring mechanical ventilation in ICUs.
- To investigate the relationship between upper airway colonization and VAP in ventilated patients.
Summary:
- Identical bacterial strains and rates were found colonizing the upper airways, trachea, and stomach in ICU patients on mechanical ventilation.
- The presence of Gram-negative bacilli in ventilated patients may indicate a risk for developing pneumonia.
- Further investigation is needed to differentiate colonization from etiological factors of pneumonia.
Impact:
- Highlights the potential of Gram-negative bacilli as an early marker for VAP in mechanically ventilated patients.
- Suggests current antibiotic therapy based solely on sensitivity tests may be insufficient.
- Emphasizes the need for precise etiological diagnosis to guide effective VAP treatment strategies.