Lack of Evidence for Arterial Ischemia in Transient Global Amnesia
2008; Lippincott Williams & Wilkins; Volume: 39; Issue: 2 Linguagem: Inglês
10.1161/strokeaha.107.498303
ISSN1524-4628
AutoresManuel Toledo, Francesc Pujadas, Elisenda Grivé, José Álvarez‐Sabín, Manuel Quintana, Àlex Rovira,
Tópico(s)Anesthesia and Neurotoxicity Research
ResumoLesions 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.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).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.These results suggest that TGA is not related to cerebral arterial ischemia.
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