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Noninvasive Sampling of Mucosal Lining Fluid for the Quantification of In Vivo Upper Airway Immune-mediator Levels
Published on: August 7, 2017
Predictors of Frequent Acute Respiratory Infections in Children With Tracheostomies
Nicole Xia1, Jennifer Henningfeld2, Rebecca Steuart3,4
1Department of Pediatrics, Medical College of Wisconsin, Milwaukee, Wisconsin, USA.
Pediatric Pulmonology
|August 13, 2026
Summary
Pseudomonas aeruginosa in children with tracheostomies is linked to frequent acute respiratory infections (ARIs). Early and repeated isolation of this bacteria predicts more ARIs, suggesting targeted treatments could reduce infection risk.
Area of Science:
- Pediatric Medicine
- Infectious Diseases
- Respiratory Health
Background:
- Children with tracheostomies are prone to frequent acute respiratory infections (ARIs).
- The impact of airway pathogens on future ARI risk in these children remains unclear.
Purpose of the Study:
- To identify predictors of frequent (3 or more) ARIs within 36 months of tracheostomy placement.
- To investigate the role of specific pathogens, particularly Pseudomonas aeruginosa, in predicting ARI frequency.
Main Methods:
- Retrospective cohort study of 436 children with tracheostomies (2010-2016).
- Analysis of medical records for respiratory cultures and ARI diagnoses (ICD-9/10 codes) within 3 years post-tracheostomy.
- Logistic, Poisson, and mediation regression models used to assess predictor associations.
Main Results:
- 20.2% of children experienced 3 or more ARIs within 36 months.
- Pseudomonas aeruginosa was isolated in 25% of children and significantly more common in those with frequent ARIs (56.8% vs 20.7%).
- Early P. aeruginosa isolation was a strong predictor of frequent ARIs (aOR 3.38), and partially mediated the effect of ventilator dependence on ARI frequency.
Conclusions:
- Early and repeated isolation of Pseudomonas aeruginosa is a significant predictor of frequent ARIs in children with tracheostomies.
- P. aeruginosa acts as a partial mediator, influencing the relationship between ventilator dependence and ARI frequency.
- Findings support risk stratification and targeted therapeutic strategies for managing ARIs in this vulnerable population.
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