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Autonomic dysfunction in Parkinson's disease.

C G Goetz, W Lutge, C M Tanner

    Neurology
    |January 1, 1986
    PubMed
    Summary
    This summary is machine-generated.

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    Parkinson's disease patients exhibit significant autonomic dysfunction, including cardiovascular and sweating abnormalities, particularly when motor symptoms are severe ("off" state). While medication improved some autonomic issues, cardiovascular reflex deficits persisted.

    Area of Science:

    • Neuroscience
    • Autonomic Nervous System Research
    • Movement Disorders

    Background:

    • Parkinson's disease (PD) is a neurodegenerative disorder primarily affecting motor function.
    • Autonomic dysfunction is a common non-motor symptom in Parkinson's disease.
    • Understanding autonomic function in PD is crucial for comprehensive patient care.

    Purpose of the Study:

    • To investigate autonomic nervous system (ANS) functions in patients with Parkinson's disease.
    • To compare autonomic responses during motor-impaired ('off') and motor-optimal ('on') states.
    • To assess the impact of dopaminergic medication on autonomic dysfunction in PD.

    Main Methods:

    • Studied 31 chronically treated Parkinson's disease patients.
    • Autonomic function tests performed twice: before medication ('off' state) and after medication ('on' state).

    Related Experiment Videos

  • Evaluated cardiovascular reflexes (pulse rate, blood pressure response to postural change, Valsalva, cold pressor) and thermoregulatory responses (sweating, skin temperature).

    • Main Results:

    • During the 'off' state, patients showed higher resting pulse rate, greater orthostatic blood pressure drop, and blunted responses to Valsalva and cold stimuli compared to controls.
    • Heat stimulus revealed increased sweating in the head/neck and cooler skin temperatures in PD patients.
    • After medication ('on' state), cardiovascular reflex abnormalities persisted, though not worsened; thermoregulatory sweating and skin temperature abnormalities resolved.

    Conclusions:

    • Chronically treated Parkinson's disease patients exhibit significant autonomic dysfunction, particularly in cardiovascular regulation and thermoregulation.
    • While dopaminergic medication may alleviate some autonomic symptoms like sweating, persistent cardiovascular reflex deficits remain.
    • Autonomic dysfunction is a significant component of Parkinson's disease, impacting patients even when motor symptoms are controlled.