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Atrial Fibrillation and Longitudinal Change in Cognitive Function in CKD.

McCauley MD, Hsu JY, Ricardo AC, Darbar D, Kansal M, Kurella Tamura M, Feldman HI, Kusek JW, Taliercio JJ, Rao PS, Shafi T, He J, Wang X, Sha D, Lamar M, Go AS, Yaffe K, Lash JP, CRIC Study Investigators. Atrial Fibrillation and Longitudinal Change in Cognitive Function in CKD. Kidney international reports. 2021 Mar 1; 6(3):669-674.

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BACKGROUND: Studies in the general population suggest that atrial fibrillation (AF) is an independent risk factor for decline in cognitive function, but this relationship has not been examined in adults with chronic kidney disease (CKD). We investigated the association between incident AF and changes in cognitive function over time in this population. METHODS AND RESULTS: We studied a subgroup of 3254 adults participating in the Chronic Renal Insufficiency Cohort Study. Incident AF was ascertained by 12-lead electrocardiogram (ECG) obtained at a study visit and/or identification of a hospitalization with AF during follow-up. Cognitive function was assessed biennially using the Modified Mini-Mental State Exam. Linear mixed effects regression was used to evaluate the association between incident AF and longitudinal change in cognitive function. Compared with individuals without incident AF (  = 3158), those with incident AF (  = 96) were older, had a higher prevalence of cardiovascular disease and hypertension, and lower estimated glomerular filtration rate. After median follow-up of 6.8 years, we observed no significant multivariable association between incident AF and change in cognitive function test score. CONCLUSION: In this cohort of adults with CKD, incident AF was not associated with a decline in cognitive function.

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