AUTHOR=Simaan Naaem , Honig Asaf , Filioglo Andrei , Jeremy Molad , Leker Ronen R. 

TITLE=The Significance of Atrial Fibrillation in Patients With Transient Global Amnesia

JOURNAL=Frontiers in Neurology

VOLUME=13

YEAR=2022

URL=https://www.frontiersin.org/journals/neurology/articles/10.3389/fneur.2022.830727

DOI=10.3389/fneur.2022.830727

ISSN=1664-2295

ABSTRACT=<sec><title>Background and Purpose</title><p>The etiology of transient global amnesia (TGA) remains unclear in a large subset of patients. We aimed to determine the clinical and radiological characteristics of TGA-patients with suspected acute micro-embolic stroke on diffusion-weighted imaging (DWI).</p></sec><sec><title>Methods</title><p>TGA-patients that had new DWI hippocampal lesions (DWI+) were compared to DWI negative TGA-patients (DWI–). Demographics, risk factors, clinical data, radiological data, and mortality were analyzed.</p></sec><sec><title>Results</title><p>Out of 83 patients diagnosed with TGA, 56 (65%) underwent MRI during the acute hospitalization and 26 (46%) had new hippocampal DWI lesions. DWI+ patients more often had a history of atrial fibrillation (AF, 26 vs. 7%, <italic>p</italic> = 0.04) but the frequency of other risk factors did not differ. None of the patients died, however, two DWI+ patients had subsequent stroke during a 2-year follow up and both had AF. In contrast, none of the DWI- patients had recurrent events.</p></sec><sec><title>Conclusion</title><p>AF is common among DWI+ TGA-patients. The presence of AF in patients with TGA could suggest an increased risk of subsequent stroke.</p></sec>