Definition, Quantification, and Utility of Biomarkers of Repetitive Brain Injury in Predicting Concussion and Other Long-Term Injury Risks in Patients With Atrial Fibrillation (Concussion AF)

"Biomarkers will be obtained at baseline, 6, 12, 18, and 24 months.~The six questionnaires listed below will be administered at the baseline visit, and repeated at the 24-month visit to evaluate cognitive decline.~* Mini-Mental Status Evaluation~* Hachinski Ischemic Scale~* Cognitive Subscale of Alzheimer's Disease Assessment Scale~* Disability Assessment for dementia~* Quality of life improvement as assessed by:~ * Minnesota Living with Heart Failure Scale~ * Anti-Clot Treatment Scale (ACTS) Quality of Life Survey"