Delayed Hyperemia Following Hypoperfusion in Classic Migraine

Reduced Regional cerebral blood flow persisting up to three hours was observed in the hemisphere appropriate to the focal neurologic deficit; hyperperfusion was noted later in the same region in these patients

Allan Renard Andersen

2011

Scholarcy highlights

  • Reduced Regional cerebral blood flow persisting up to three hours was observed in the hemisphere appropriate to the focal neurologic deficit; hyperperfusion was noted later in the same region in these patients
  • At 24 hours rCBF was normal in four patients, hyperemia persisted in two patients, and one patient was not restudied
  • The area of interest demonstrated a mean decrease of 19% ± 7% in side-to-side asymmetry when compared with the contralateral region
  • No asymmetries were observed after one week
  • The late hyperemic asymmetry often persisted beyond the duration of the clinical headache
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