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Atrial fibrillation (AF) is the most common cardiac arrhythmia in clinical practice. The estimated US prevalence of 2.7–6.1 million is expected to increase to 5.6–12.1 million by the middle of the current century. In addition, AF prevalence dramatically increases with age: <1% in individuals aged 50–59 years are affected, whereas about 10% of those aged 80–84 years and 11–18% of those ≥85 years have AF.1
Cognitive impairment with and without dementia is also a common condition in older age and is associated with higher mortality.2 Cognitive impairment is frequently associated with AF, but the rationale of this relationship is still controversial, especially in the absence of stroke.
Competing interests None.