Lack of evidence for arterial ischemia in transient global amnesia

Manuel Toledo, Francesc Pujadas, Elisenda Grivé, José Álvarez-Sabin, Manuel Quintana, Alex Rovira

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42 Citations (Scopus)

Abstract

BACKGROUND AND PURPOSE - Lesions in diffusion-weighted imaging (DWI-L) have been commonly described in transient global amnesia (TGA). We investigated a possible relationship between brain ischemia and TGA. METHODS - Twenty-eight patients underwent transcranial and carotid Doppler ultrasonography (including microembolus detection) and MRI within 24 hours of TGA onset (including DWI, perfusion-weighted imaging and angio-MRI). MRI was repeated at 48 to 96 hours (21 patients) and 30 days (18 patients). RESULTS - Punctate DWI-L were observed in 16 patients (57%) and were not attributable to perfusion abnormalities, arterial stenoses or underlying cardioembolic disease. MRIs performed between 12 and 72 hours showed the highest frequency of DWI-L (88%; P<0.001). No pathological findings were observed at 30 days. CONCLUSIONS - These results suggest that TGA is not related to cerebral arterial ischemia. © 2008 American Heart Association, Inc.
Original languageEnglish
Pages (from-to)476-479
JournalStroke
Volume39
Issue number2
DOIs
Publication statusPublished - 1 Feb 2008

Keywords

  • Brain ischemia
  • Neuroimaging and MRI
  • Transient global amnesia
  • Transient ischemic attack

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