Abnormal forearm vascular responses during dynamic leg exercise in patients with vasovagal syncope

Helen L. Thomson, Suhas S. Lele, John J. Atherton, Karen N. Wright, Wayne Stafford, Michael P. Frenneaux

Research output: Contribution to journalArticlepeer-review

38 Citations (Scopus)


We have reported previously that in some patients with normal hearts who present with exercise syncope, abnormal forearm vasodilation is seen during leg exercise and tilt table tests are positive. This suggests that exercise syncope may be a variant of vasovagal syncope. In this study we tested the hypothesis that there is loss of the normal forearm vasoconstrictor response during dynamic leg exercise in an unselected population of patients with classic vasovagal syncope.
Original languageEnglish
Pages (from-to)2204-9
Number of pages6
Issue number8
Publication statusPublished - 15 Oct 1995


  • Adult
  • Blood Pressure
  • Case-Control Studies
  • Exercise
  • Exercise Test
  • Female
  • Forearm
  • Humans
  • Leg
  • Male
  • Phenylephrine
  • Pressoreceptors
  • Regional Blood Flow
  • Syncope
  • Vascular Resistance
  • Vasoconstriction
  • Vasomotor System

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