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Screening for childhood asthma using an exercise test

A Jones1, M Bowen

  • 1Department of General Practice, University of Wales College of Medicine, Cardiff.

The British Journal of General Practice : the Journal of the Royal College of General Practitioners
|March 1, 1994
PubMed
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An exercise test can identify children with potential asthma, showing a link between bronchial hyperreactivity and childhood asthma. This screening method aids in early detection and understanding of related respiratory illnesses.

Area of Science:

  • Pediatric respiratory health
  • Diagnostic markers for asthma
  • Epidemiology of childhood illnesses

Background:

  • Rising prevalence of childhood asthma and associated hospitalizations necessitates community screening.
  • Early identification of asthma in children can mitigate severe outcomes.

Purpose of the Study:

  • To evaluate a standard exercise test as a potential marker for diagnosing childhood asthma.
  • To investigate the relationship between asthma and other respiratory tract illnesses in children.

Main Methods:

  • A six-year longitudinal study (1985-1991) involving 864 children in primary schools.
  • Exercise testing measured peak expiratory flow rate changes after a six-minute run.
  • Comparison of children with positive/negative exercise tests and those with known asthma.

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Main Results:

  • The exercise test demonstrated 43% sensitivity and 93% specificity for asthma.
  • Children with positive exercise tests were more likely to develop clinically recognized asthma within six years.
  • Bronchial hyperreactivity correlated with a higher prevalence of atopic and other respiratory illnesses.

Conclusions:

  • Exercise-induced bronchial hyperreactivity serves as a reliable marker for identifying childhood asthma.
  • The study suggests a spectrum of respiratory illnesses, including asthma, linked to bronchial hyperreactivity.