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Environmental factors association between asthma and acute bronchiolitis in young children--a perspective cohort

Hui-Wen Lin1, Sheng-Chieh Lin

  • 1Department of Mathematics, Soochow University, Taipei, Taiwan.

European Journal of Pediatrics
|July 11, 2012
PubMed

Insights

Young children diagnosed with acute bronchiolitis face a significantly higher risk of developing asthma. This study recommends monitoring these children for two years to help prevent childhood asthma.

Area of Science:

  • Pediatrics
  • Respiratory Medicine
  • Epidemiology

Background:

  • Asthma and acute bronchiolitis are common childhood respiratory diseases characterized by wheezing.
  • Diagnosing asthma in children under two years old presents diagnostic challenges.
  • Identifying risk factors for childhood asthma is crucial for early intervention.

Purpose of the Study:

  • To evaluate the association between acute bronchiolitis and the subsequent development of asthma in young children.
  • To identify risk factors, including sex, urbanization, and geographic region, associated with asthma development after acute bronchiolitis.
  • To determine the optimal monitoring period for children with acute bronchiolitis to prevent asthma.

Main Methods:

  • A perspective cohort study utilizing the Taiwan Longitudinal Health Insurance Database (2005).
  • Inclusion of 4,586 children diagnosed with acute bronchiolitis and 4,263 controls, all under two years old.
  • Follow-up for three years using Cox proportional hazard regression and Kaplan-Meier analysis to assess asthma development and risk factors.

Main Results:

  • Children with acute bronchiolitis had a significantly higher likelihood of developing asthma (adjusted HR 13.55).
  • Male sex, rural living, and northern Taiwan residency were associated with increased asthma risk in children with acute bronchiolitis.
  • Asthma-free survival analysis indicated a two-year window of increased risk following acute bronchiolitis.

Conclusions:

  • Acute bronchiolitis is a strong predictor of subsequent asthma development in young children.
  • Specific demographic and geographic factors modify asthma risk following acute bronchiolitis.
  • A two-year monitoring period post-acute bronchiolitis is recommended for early asthma prevention strategies in high-risk children.

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