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Exercise induced bronchoconstriction in Nigerian asthmatics

G E Erhabor1, A A Awotedu, M O Balogun

  • 1Department of Medicine, Obafemi Awolowo University Teaching Hospital, Ile-Ife, Nigeria.

African Journal of Medicine and Medical Sciences
|June 1, 1993
PubMed
Summary
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This study found that many asthma patients experience exercise-induced bronchoconstriction (EIB), even without a prior history. Exercise testing is crucial for diagnosing exercise-induced asthma (EIA) accurately.

Area of Science:

  • Pulmonology
  • Exercise Physiology
  • Allergy and Immunology

Background:

  • Exercise-induced asthma (EIA) is a common condition.
  • Diagnosis often relies on patient history, which may be incomplete.

Purpose of the Study:

  • To evaluate the prevalence of exercise-induced bronchoconstriction (EIB) in asthmatic subjects.
  • To compare exercise testing results with patient history for EIA diagnosis.

Main Methods:

  • Free-running exercise test administered to 40 asthmatic patients and 40 controls.
  • Diagnosis of EIB based on a >15% fall in peak expiratory flow rate (PEFR).

Main Results:

  • 77.5% of asthmatic patients exhibited EIB; no controls did.

Related Experiment Videos

  • 25/27 (92.59%) with a history of EIA had positive exercise tests.
  • 6/13 (46.15%) without a history of EIA were found to have EIB.

    • Conclusions:

    • Exercise testing is a valuable tool for diagnosing EIB in asthma.
    • Patient history alone is insufficient for diagnosing exercise-induced asthma.