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Bronchial lability in allergic rhinitis.

S Walter1

  • 1Department of Physiology, Christian Medical College, Vellore.

Indian Journal of Physiology and Pharmacology
|July 1, 1992
PubMed
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Allergic rhinitis patients show lower pulmonary function and higher exercise bronchial lability. Greater bronchial lability correlated with a slower decline in lung function (FEV1) over one year.

Area of Science:

  • Pulmonary Medicine
  • Allergology
  • Exercise Physiology

Background:

  • Allergic rhinitis is linked to altered airway function.
  • Exercise can provoke bronchoconstriction in sensitive individuals.

Purpose of the Study:

  • To investigate the relationship between exercise bronchial lability and pulmonary function changes over one year in allergic rhinitis patients.
  • To assess if bronchial lability predicts lung function decline.

Main Methods:

  • Studied 84 male medical students (22 with allergic rhinitis) over one year.
  • Measured pulmonary function tests, including FEV1 and FEF 25-75%.
  • Assessed exercise bronchial lability.

Main Results:

Related Experiment Videos

  • Allergic rhinitis subjects had significantly lower pulmonary function and higher exercise bronchial lability.
  • Allergic rhinitis patients experienced a 3x greater decline in FEV1 and 50% greater decline in FEF 25-75% over the year.
  • A positive correlation was found between FEV1 change and bronchial lability.

    • Conclusions:

    • Exercise bronchial lability may be a protective factor against pulmonary function decline in allergic rhinitis.
    • Higher bronchial lability is associated with a slower rate of lung function deterioration in this population.