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Related Experiment Videos

At what age do bronchodilator drugs work?

W Lenney, A D Milner

    Archives of Disease in Childhood
    |July 1, 1978
    PubMed
    Summary

    Salbutamol therapy effectively reduced respiratory resistance in wheezing children over 20 months old. Younger children (under 18 months) showed minimal response to this bronchodilator treatment.

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    Area of Science:

    • Pediatric Pulmonology
    • Respiratory Physiology
    • Pharmacology

    Background:

    • Wheezing in young children is a common respiratory issue.
    • Bronchodilator therapy, like salbutamol, is often used to manage wheezing.
    • Understanding the age-related response to bronchodilators is crucial for effective treatment.

    Purpose of the Study:

    • To assess the efficacy of nebulized salbutamol in reducing respiratory resistance in wheezing infants and young children.
    • To investigate age-dependent differences in response to salbutamol therapy.
    • To evaluate changes in thoracic gas volume following salbutamol administration.

    Main Methods:

    • A modified forced oscillation technique was employed to measure respiratory resistance.
    • Respiratory resistance was measured before and after nebulized salbutamol administration.
    • A subset of children underwent total body plethysmography to assess thoracic gas volume.

    Main Results:

    • Children over 20 months of age demonstrated a significant decrease in respiratory resistance (>20%) post-salbutamol.
    • In contrast, children under 18 months showed minimal improvement in respiratory resistance (<5%).
    • No significant changes in thoracic gas volume were observed in infants under 18 months.

    Conclusions:

    • Nebulized salbutamol is effective in improving respiratory resistance in wheezing children over 20 months old.
    • Younger infants (under 18 months) exhibit a limited response to salbutamol, suggesting different underlying pathophysiology or airway receptor development.
    • Age is a critical factor in determining the therapeutic response to salbutamol in pediatric wheezing.

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