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Related Experiment Videos

Asthma hyperventilation and emotion

P S Clarke, J R Gibson

    Australian Family Physician
    |October 1, 1980
    PubMed
    Summary
    This summary is machine-generated.

    Asthma patients hyperventilate, breathing more air (increased respiratory minute volume), which can worsen airway obstruction. This occurs even when recalling an asthma attack or experiencing emotional states.

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    Area of Science:

    • Respiratory Medicine
    • Pulmonology
    • Clinical Physiology

    Background:

    • Hyperventilation in asthma patients leads to airway obstruction, evidenced by decreased Forced Expiratory Volume in one second (FEV1).
    • Clinical observations show reduced blood carbon dioxide levels in hyperventilating asthmatics during attacks, indicating altered respiratory function.

    Purpose of the Study:

    • To demonstrate that asthmatic subjects hyperventilate when thinking about asthma.
    • To quantify changes in respiratory minute volume associated with asthma recall and emotional stimuli.

    Main Methods:

    • Measured respiratory minute volume in chronic asthmatics during relaxation versus recalling an asthma attack.
    • Assessed respiratory minute volume in asthmatic volunteers under hypnosis and conscious states, with suggested emotions including anger, fright, and asthma.

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    Main Results:

    • Respiratory minute volume significantly increased from 10.1 L (relaxed) to 13.5 L (asthma recall) (p < .025).
    • All tested emotional states, including anger, fright, and asthma, induced a significant increase in respiratory minute volume (p < 0.1).

    Conclusions:

    • Asthmatic subjects exhibit hyperventilation upon recalling asthmatic episodes.
    • Emotional stimuli, whether conscious or hypnotic, significantly increase respiratory minute volume in asthmatics, potentially exacerbating airway obstruction.