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Related Experiment Videos

Vegetative nervous system and syncopes.

F Simone1

  • 11st Department of Neurology, University of Bari, Italy.

Functional Neurology
|July 1, 1990
PubMed
Summary
This summary is machine-generated.

The vegetative nervous system (VNS) influences various syncopes. Vasovagal syncopes are typically functional, while autonomic failure syncopes are organic, impacting blood pressure regulation.

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Area of Science:

  • Neuroscience
  • Cardiology
  • Physiology

Background:

  • The vegetative nervous system (VNS) is implicated in various syncopal events.
  • Syncopes can arise from functional or organic pathogenetic mechanisms.
  • Understanding these mechanisms is crucial for diagnosis and treatment.

Purpose of the Study:

  • To differentiate between functional (vasovagal) and organic (autonomic failure) syncopes.
  • To elucidate the role of the VNS in different types of syncope.
  • To explore the functional significance of the VNS in autonomic insufficiency.

Main Methods:

  • Comparative analysis of vasovagal syncope and autonomic failure.
  • Discussion of pathogenetic mechanisms including vasodepression, cardioinhibition, and baroceptor dysfunction.

Related Experiment Videos

  • Utilizing autonomic failure as a model for chronic vegetative insufficiency.

    • Main Results:

    • Vasovagal syncope is characterized by (dys)functional vasodepression and cardioinhibition.
    • Autonomic failure syncope presents with organic pathogenesis due to impaired baroceptor control.
    • Distinct differences exist in the pathogenetic mechanisms of functional versus organic vegetative syncopes.

    Conclusions:

    • Autonomic failure provides insights into the chronic functional role of the VNS.
    • Vasovagal syncopes may represent integrated inhibitory vegetative-somatic responses.
    • These responses appear to serve a protective and adaptive functional role.