1991
DOI: 10.1016/0140-6736(91)90005-a
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Migraine pain associated with middle cerebral artery dilatation: reversal by sumatriptan

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Cited by 350 publications
(240 citation statements)
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“…Consistent with many TCD studies [2][3][4][5][6][7][8][9][10][11][12][13], this study detected no significant change in FV in the MCAs in patients with migraine during the headache phase. The lack of significant FV changes during the headache phase of migraine as explored by TCD has been explained by several theories including the various technical limitations of TCD [16].…”
Section: Discussionsupporting
confidence: 91%
See 1 more Smart Citation
“…Consistent with many TCD studies [2][3][4][5][6][7][8][9][10][11][12][13], this study detected no significant change in FV in the MCAs in patients with migraine during the headache phase. The lack of significant FV changes during the headache phase of migraine as explored by TCD has been explained by several theories including the various technical limitations of TCD [16].…”
Section: Discussionsupporting
confidence: 91%
“…These studies were largely limited to velocity measurements from middle cerebral arteries (MCA). The findings of these studies varied, with reports of increased [2,3], decreased [2,[4][5][6][7][8][9][10] or unchanged velocities [11][12][13]. These discordant findings have been attributed to technical limitations of TCD; as only discrete segments of the vessel are insonated, operator dependent measurements, variability of migraine presentation, under sensitivity of limited number of vessels insonated, and limitations of the vascular hypothesis.…”
Section: Introductionmentioning
confidence: 99%
“…This is in agreement with a recent transcranial Doppler study that showed that outside of a migraine attack, sumatriptan did not modify the calibre of the middle cerebral artery. However, interestingly, during mi graine, dilation of the middle cerebral artery was found on the headache side only; this was normal ised by sumatriptan without the rCBF being affected (Friberg et al, 1991), probably due to au toregulatory changes further downstream in the cerebrovascular bed. Thus, it is possible that the vasoconstrictor effect of sumatriptan on the large surface arteries of the brain is more apparent under conditions of dilation and inflammation, as has been suggested to occur during migraine (see the intro duction).…”
Section: Discussionmentioning
confidence: 91%
“…. Furthermore, a clinically relevant dose of sumatriptan (2 mg i. v.) caused no change in rCBF in healthy volunteers (Friberg et al, 1991). We therefore investigated whether sumatriptan causes pial artery vasocon striction when administered intravenously to anaes thetised cats; the dose selected (6.…”
Section: Discussionmentioning
confidence: 99%
“…Friberg et al (10) estimated that a mean 20% increase of the diameter of the middle cerebral artery using transcranial Doppler and administration of sublingual NTG resulted in a mean 30%% Ϯ 8% increase in the human coronary artery (11). The mean diameter of the MMA in healthy volunteers was 1.4 mm with an SD of 0.18 (pilot study).…”
Section: Sample Size Calculationsmentioning
confidence: 99%