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Bacterial colonization, tracheobronchitis, and pneumonia following tracheostomy and long-term intubation in pediatric
Insights
This study on pediatric patients with tracheostomy found that anaerobic bacteria are frequently present in colonization, tracheobronchitis, and pneumonia, alongside common aerobic pathogens like Streptococcus pneumoniae.
Area of Science:
- Microbiology
- Pediatric Pulmonology
- Infectious Diseases
Background:
- Prolonged intubation and tracheostomy in pediatric patients create conditions for respiratory tract infections.
- Understanding the bacterial flora in these vulnerable patients is crucial for effective treatment.
Purpose of the Study:
- To investigate the prevalence and types of aerobic and anaerobic bacteria in pediatric patients requiring tracheostomy and prolonged intubation.
- To determine the role of anaerobic bacteria in respiratory infections in this patient population.
Main Methods:
- Serial tracheal cultures were performed over one year on 27 pediatric patients.
- 1,508 bacterial isolates (969 aerobic, 539 anaerobic) were identified from tracheal aspirates.
- Clinical data on tracheostomy duration, intubation, tracheobronchitis, and pneumonia were collected.
Main Results:
- Common aerobic isolates included Streptococcus pneumoniae and Staphylococcus aureus.
- Predominant anaerobic isolates were anaerobic gram-positive cocci, Fusobacterium nucleatum, and Bacteroides fragilis.
- Pathogen replacement was frequently observed, and all patients with tracheobronchitis also experienced pneumonia.
Conclusions:
- Anaerobic bacteria are a significant component of the bacterial flora in pediatric patients with tracheostomy and prolonged intubation.
- These findings suggest a crucial role for anaerobic bacteria in colonization, tracheobronchitis, and pneumonia in this cohort.
- Further research is warranted to explore targeted therapies against anaerobic infections in these patients.
Abstract:
Serial tracheal cultures for aerobic and anaerobic bacteria were obtained from 27 pediatric patients during one year of follow-up. The patients had required tracheostomy and prolonged intubation for periods ranging from 3 to 12 months (average, 7 1/2 months). Cultures of tracheal aspirates yielded 1,508 isolates of pathogenic aerobic (969 isolates) and anaerobic (539 isolates) bacteria. The most frequent aerobic isolates were Streptococcus pneumoniae and Staphylococcus aureus. The predominant anaerobes were anaerobic gram-positive cocci, Fusobacterium nucleatum, and Bacteroides fragilis. Replacement of one pathogen by another occurred frequently. Tracheobronchitis occurred in 24 patients, all of whom had episodes of pneumonia. The data suggest that anaerobic bacteria are a part of the bacterial flora in colonization, tracheobronchitis, and pneumonia in patients with tracheostomy and prolonged intubation.