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Hypnosis effect on carbon dioxide chemosensitivity.

P Sato, M Sargur, R B Schoene

    Chest
    |June 1, 1986
    PubMed
    Summary
    This summary is machine-generated.

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    Hypnosis can reduce the body's response to carbon dioxide (CO2) levels, a finding relevant for managing dyspnea. This study shows hypnotic suggestion blunts hypercapnic ventilatory response (HCVR) without altering metabolism.

    Area of Science:

    • Physiology
    • Neuroscience
    • Respiratory Medicine

    Background:

    • Hypnosis induces a state of heightened suggestibility and can alter physiological variables.
    • Carbon dioxide (CO2) chemosensitivity plays a crucial role in regulating breathing.
    • Understanding factors that modulate CO2 chemosensitivity is important for respiratory control research.

    Purpose of the Study:

    • To investigate whether carbon dioxide (CO2) chemosensitivity can be blunted during hypnosis.
    • To assess the effect of hypnotic suggestion on hypercapnic ventilatory response (HCVR).

    Main Methods:

    • Twenty healthy subjects participated in the study.
    • Measurements included hypercapnic ventilatory response (HCVR), oxygen consumption (VO2), breathing pattern (VT and f), inspiratory flow rate (VT/Ti), and inspiratory timing (Ti/Ttot).

    Related Experiment Videos

  • Mouth occlusion pressures (P0.1) were measured in a subset of subjects.
  • HCVR was assessed under spontaneous and suggested ventilation conditions during both awake and hypnotic states.

    • Main Results:

    • Ventilatory responses to CO2 were found to be blunted during hypnosis.
    • This blunting effect was more pronounced with hypnotic suggestion compared to voluntary control.
    • Metabolism (oxygen consumption) remained unchanged, indicating a specific effect on chemosensitivity.

    Conclusions:

    • Hypnotic suggestion can significantly reduce carbon dioxide (CO2) chemosensitivity.
    • These findings suggest potential therapeutic applications for managing dyspnea in patients with heightened ventilatory chemosensitivity.
    • Hypnosis offers a non-pharmacological approach to modulate respiratory control mechanisms.