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Early Bronchiolitis Contributes to Preschool Asthma

Jih-Chin Chang1,2, Jeng-Yuan Chiou3, Jiunn-Liang Ko2

  • 1Department of Pediatrics, Chang Bing Show Chwan Memorial Hospital, Changhua 505, Taiwan.

Children (Basel, Switzerland)
|December 24, 2021
PubMed

Insights

Early bronchiolitis in infants predicts later childhood asthma development, particularly after hospitalization. This risk decreases with age but highlights bronchiolitis as a key factor for preschool asthma.

Area of Science:

  • Pediatrics
  • Respiratory Medicine
  • Epidemiology

Background:

  • Bronchiolitis is a common respiratory infection in infants.
  • The long-term respiratory consequences of bronchiolitis remain a significant concern.
  • Understanding the link between early-life infections and later asthma is crucial for public health.

Purpose of the Study:

  • To investigate the association between bronchiolitis in children under one year of age and the subsequent development of asthma.
  • To determine if hospitalization for bronchiolitis increases asthma risk.
  • To explore potential interactions with other conditions like atopic dermatitis.

Main Methods:

  • Retrospective cohort study using Taiwan's National Health Insurance Research Database.
  • Comparison of asthma incidence between a cohort with early bronchiolitis (N=65,559) and a control group (N=49,656).
  • Analysis of asthma risk, comorbidities, and age-related trends.

Main Results:

  • Significantly higher incidence of childhood asthma in the bronchiolitis group (aHR = 1.127).
  • Increased asthma risk observed between ages two and four years for children hospitalized with bronchiolitis.
  • Asthma risk associated with bronchiolitis diminished with increasing age.
  • No synergistic effect found between bronchiolitis and atopic dermatitis.

Conclusions:

  • Bronchiolitis in infants is a predictive factor for preschool asthma.
  • Hospitalization for bronchiolitis is a key indicator of elevated asthma risk.
  • Early bronchiolitis warrants consideration in asthma surveillance and prevention strategies.

Keywords:
asthmaatopic dermatitisbronchiolitishospitalizationinfant

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