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[Pulmonary circulation and autonomic nervous system].

R Naeije

    Bulletin Et Memoires De L'Academie Royale De Medecine De Belgique
    |January 1, 1989
    PubMed
    Summary

    The sympathetic nervous system dilates pulmonary blood vessels, while the parasympathetic system has no effect on vasomotor tone in healthy lungs. This research clarifies autonomic control of pulmonary circulation.

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    Experimental physiology·2014

    Area of Science:

    • Pulmonary physiology
    • Autonomic nervous system function
    • Vascular regulation

    Context:

    • The autonomic innervation of pulmonary vasculature is not fully understood.
    • Recent studies investigate pulmonary circulation pressure-flow dynamics in intact dog models.
    • Understanding autonomic control is crucial for pulmonary physiopathology.

    Purpose:

    • To elucidate the role of autonomic nerves in regulating pulmonary vascular tone.
    • To determine the specific effects of sympathetic and parasympathetic stimulation on pulmonary circulation.
    • To clarify pressure-flow relationships in the pulmonary vasculature under varying oxygen conditions.

    Summary:

    • Sympathetic nervous system activation causes vasodilation in healthy lungs under normal, hyperoxic, or moderately hypoxic conditions.
    • Parasympathetic nervous system does not appear to significantly influence vasomotor tone in the pulmonary circulation.
    • Experimental models using intact dogs provided insights into pulmonary vascular regulation.

    Impact:

    • Advances understanding of pulmonary circulation control mechanisms.
    • Highlights the significant role of the sympathetic nervous system in pulmonary vasodilation.
    • Suggests traditional physiological research contributes to modern physiopathology and therapeutics.

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