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Related Experiment Videos

Stretch syncope in adolescence.

J T Pelekanos1, J M Dooley, P R Camfield

  • 1Department of Pediatrics, Dalhousie University, Izaak Walton Killam Children's Hospital, Halifax, Nova Scotia, Canada.

Neurology
|April 1, 1990
PubMed
Summary
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Six adolescents experienced fainting (syncope) when stretching their neck backward. This suggests a link between neck extension, vertebral artery compression, and a family history of fainting, not just the Valsalva maneuver.

Area of Science:

  • Cardiology
  • Neurology
  • Genetics

Background:

  • Syncope is a common clinical finding, especially in adolescents.
  • The Valsalva maneuver is a known cause of reflex syncope.
  • Neck hyperextension can precipitate syncope in susceptible individuals.

Observation:

  • Six adolescent patients presented with syncope exclusively triggered by neck hyperextension during stretching.
  • Cardiovascular responses during stretching and Valsalva maneuvers were assessed in these patients.
  • Comparative analysis was performed against control groups.

Findings:

  • Patients exhibited syncope linked to neck hyperextension, suggesting a specific trigger mechanism.
  • Cardiovascular responses in affected patients were similar to controls during standard tests.

Related Experiment Videos

  • The findings indicate that vertebral artery compression, in conjunction with a potential familial predisposition, likely contributes to this type of syncope.

    • Implications:

    • This study highlights a distinct form of reflex syncope related to neck positioning.
    • It suggests the importance of considering vertebral artery compression in adolescent syncope cases.
    • Further research into the genetic and vascular factors underlying this condition is warranted.