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10:39

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Subclinical left ventricular dysfunction in migraine attacks

Manuel Vidalón1

  • 1Department of Cardiology and Neurology, Promitra Center for Research and Treatment of Stress, São Carlos Hospital, Curitiba, Brazil.

Headache
|January 18, 2006
PubMed

Insights

Migraine attacks may involve temporary cardiac dysfunction. Phenylephrine infusion during attacks revealed decreased cardiac performance in migraine patients, suggesting a link to migraine pathophysiology.

Area of Science:

  • Cardiology
  • Neurology
  • Physiology

Background:

  • Circulatory changes are observed during migraine attacks.
  • The link between circulatory changes and transient cardiac dysfunction in migraine is not well understood.

Purpose of the Study:

  • To assess cardiac performance in migraine patients during phenylephrine-induced circulatory overload.
  • To investigate potential transient cardiac dysfunction during migraine attacks.

Main Methods:

  • Echocardiography (fractional shortening, ejection fraction, mean velocity of circumferential fibers shortening) was used.
  • Measurements were taken in 18 migraine patients and 10 controls during attack-free intervals and during attacks.
  • Phenylephrine infusion was administered to assess cardiac response under stress.

Main Results:

  • Cardiac function was normal at rest in both groups.
  • During migraine attacks, phenylephrine infusion significantly reduced cardiac function parameters (fractional shortening, ejection fraction, mean velocity of circumferential fibers shortening).
  • Cardiac function remained stable in controls and during attack-free intervals.

Conclusions:

  • Left ventricular dysfunction during the phenylephrine test may contribute to migraine pathophysiology.
  • These findings suggest a role for cardiac dysfunction in the complex mechanisms underlying migraine attacks.
Abstract

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