Atrial fibrillation (AF) appears to increase risks for cognitive impairment and dementia, according to findings from a large meta-analysis. AF was significantly associated with a higher risk for cognitive impairment in patients with a first-ever stroke or recurrent stroke (relative risk [RR], 2.70) and in a broader group of AF patients with or without a history of stroke (RR, 1.40).

Abstract: JAMA Internal Medicine, March 4, 2013.