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Is vasovagal syncope a disease?

Paolo Alboni1, Michele Brignole, Ettore C Degli Uberti

  • 1Division of Cardiology and Arrhythmologic Center, Ospedale Civile, Via Vicini 2, 44042 Cento (FE), Italy. p.alboni@ausl.fe.it

Europace : European Pacing, Arrhythmias, and Cardiac Electrophysiology : Journal of the Working Groups on Cardiac Pacing, Arrhythmias, and Cardiac Cellular Electrophysiology of the European Society of Cardiology
|February 3, 2007
PubMed
Summary

Vasovagal syncope (VVS) is typically an isolated event, not a disease, in otherwise healthy individuals. Differentiating it from age-related syncope linked to underlying conditions is crucial for accurate diagnosis.

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Area of Science:

  • Cardiology
  • Neurology
  • Autonomic Nervous System Research

Background:

  • Vasovagal syncope (VVS) is commonly an isolated manifestation, not intrinsically linked to cardiovascular or neurological diseases.
  • The vasovagal response involves neural pathways present in healthy individuals, with varying susceptibility.
  • Spontaneous syncope occurs in approximately half of the population during their lifetime.

Purpose of the Study:

  • To differentiate isolated vasovagal syncope from syncope associated with underlying pathological processes.
  • To clarify the nosological definition of vasovagal syncope.
  • To distinguish VVS in younger individuals from syncope in the elderly, which may indicate disease.

Main Methods:

  • Review of existing literature and clinical observations on vasovagal syncope.
  • Analysis of VVS presentation in diverse populations, including astronauts and individuals undergoing tilt testing.
  • Comparison of physiological parameters in subjects with and without VVS history.

Main Results:

  • Isolated VVS is characterized by normal blood pressure regulation outside of syncopal episodes.
  • No consistent genetic basis or generalized autonomic dysfunction has been demonstrated for isolated VVS.
  • Syncope in older individuals is often associated with cardiovascular disorders or dysautonomia, unlike isolated VVS.

Conclusions:

  • Isolated VVS in healthy individuals should not be equated with disease.
  • Distinguishing isolated VVS from age-related or disease-associated syncope is essential for proper clinical management.
  • Further research is needed to fully understand the autonomic nervous system's role in VVS.