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Development of Obliterative Bronchiolitis in a Murine Model of Orthotopic Lung Transplantation
10:01

Development of Obliterative Bronchiolitis in a Murine Model of Orthotopic Lung Transplantation

Published on: July 10, 2012

Contribution of post-infectious bronchiolitis obliterans to non-cystic fibrosis bronchiectasis in children

A Gie1, C Le Roux2, M M van der Zalm3

  • 1Department of Paediatrics and Child Health, Faculty of Medicine, Stellenbosch University, Stellenbosch, South Africa.

The International Journal of Tuberculosis and Lung Disease : the Official Journal of the International Union Against Tuberculosis and Lung Disease
|March 29, 2025
PubMed

Insights

Bronchiectasis frequently develops in children with post-infectious bronchiolitis obliterans (PIBO) within months of the initial respiratory insult. No specific risk factors were identified, though premature birth is common in these pediatric patients.

Area of Science:

  • Pediatric Pulmonology
  • Respiratory Medicine
  • Infectious Diseases

Background:

  • Post-infectious bronchiolitis obliterans (PIBO) is a sequela of severe pediatric respiratory infections.
  • PIBO leads to small airway injury, bronchiectasis, and lasting respiratory issues.
  • Risk factors for PIBO and associated bronchiectasis remain poorly understood.

Purpose of the Study:

  • To investigate the characteristics of children diagnosed with PIBO.
  • To identify the prevalence and clinical features of bronchiectasis in pediatric PIBO.
  • To explore potential risk factors associated with PIBO and bronchiectasis.

Main Methods:

  • Retrospective analysis of pediatric PIBO cases at a South African tertiary hospital (2016-2022).
  • Collection of clinical data, chest CT findings, and prior respiratory infection hospitalization details.
  • Comparison of characteristics between PIBO patients with and without bronchiectasis.

Main Results:

  • 59 children with PIBO were analyzed (median age at insult: 10 months).
  • Adenovirus was the most common pathogen (69.5%); 32.2% required mechanical ventilation.
  • Bronchiectasis was present in 55.9% of cases, often appearing within months of the initial insult, with no clear risk factors identified.

Conclusions:

  • Bronchiectasis is a frequent complication of pediatric PIBO.
  • Bronchiectasis can develop rapidly after the initial respiratory insult.
  • Premature birth is a common comorbidity and may be a contributing factor to PIBO development.

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