[Characteristic of microflora isolated during mechanical lung ventilation]
Summary
During mechanical lung ventilation, patients showed increased microbial diversity and virulence in respiratory secretions upon extubation. This suggests a higher risk for respiratory infections and diseases.
Area of Science:
- Microbiology
- Pulmonary Medicine
Context:
- Mechanical lung ventilation is a critical care intervention.
- Lower respiratory tract infections are a significant complication in ventilated patients.
Purpose:
- To investigate the species composition and biological properties of microorganisms in the lower respiratory tract of patients undergoing mechanical ventilation.
- To assess changes in microbial load, diversity, and virulence factors during the extubation process.
Summary:
- 59 microbial strains were isolated from 34 patients' tracheobronchial secretions during intubation and extubation.
- Increased microbial seeding, species diversity, and prevalence of highly virulent strains (hemolytic and anti-lysozyme activity) were observed during extubation.
- Established methods were used for isolation, identification, and determination of hemolytic and anti-lysozyme activity.
Impact:
- Findings can aid in predicting the risk of respiratory system diseases in mechanically ventilated patients.
- Understanding microbial shifts during extubation may inform targeted preventative strategies against hospital-acquired infections.
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