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Cardiovascular Autonomic Dysfunction in Migraine Attack
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Background: There has been proposing reports that the autonomic nervous system (ANS) is involved in the pathophysiological mechanism of migraine. However, previous reports suggesting ANS dysfunction during migraine attack was not consistent and were focused mainly on comparison between migraine patients in interictal period and normal controls. The current study is designed to evaluate quantitative evidence of ANS dysfunction by comparing patients in ictal period with those in interictal period. Methods: We prospectively included 30 migraineurs in ictal period and 30 migraineurs in interictal period from August 2008 to August 2009. Sympathetic function was evaluated by blood pressure response to standing and isometric exercise. Parasympathetic function was evaluated by heart rate response to deep breathing, standing and the Valsalva maneuver. Results: In orthostatic test, falling of systolic blood pressure (SBP) after standing was prominent in ictal group. Although both groups showed elevation of diastolic blood pressure (DBP) after standing, the change was smaller in ictal group than intercital group. Elevation of DBP after isometric exercise was lower in ictal group without statistical significance. Results of parasympathetic function test were not significantly different between ictal and interictal patients. Conclusions: This study suggests that subjects with migraine had sympathetic hypofunction during migraine attack.
Abstract
Background: There has been proposing reports that the autonomic nervous system (ANS) is involved in the pathophysiological mechanism of migraine. However, previous reports suggesting ANS dysfunction during migraine attack was not consistent and were focused mainly on comparison between migraine patients in interictal period and normal controls. The current study is designed to evaluate quantitative evidence of ANS dysfunction by comparing patients in ictal period with those in interictal period. Methods: We prospectively included 30 migraineurs in ictal period and 30 migraineurs in interictal period from August 2008 to August 2009. Sympathetic function was evaluated by blood pressure response to standing and isometric exercise. Parasympathetic function was evaluated by heart rate response to deep breathing, standing and the Valsalva maneuver. Results: In orthostatic test, falling of systolic blood pressure (SBP) after standing was prominent in ictal group. Although both groups showed elevation of diastolic blood pressure (DBP) after standing, the change was smaller in ictal group than intercital group. Elevation of DBP after isometric exercise was lower in ictal group without statistical significance. Results of parasympathetic function test were not significantly different between ictal and interictal patients. Conclusions: This study suggests that subjects with migraine had sympathetic hypofunction during migraine attack.
참고문헌 (17)
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