Analysis of Risk Factors Independently Associated with Cognitive Impairment in Patients with Permanent Atrial Fibrillation: A Cross-sectional Observational Study.

Abstract Background and objective Atrial Fibrillation (AF) is associated with an increased risk of stroke and development of cognitive impairment. Our cross-sectional study aims to identify risk factors for cognitive impairment in patients with permanent AF. Materials and methods 212 consecutive outpatients with history of permanent AF lasting more than 1 year were enrolled and the Short Portable Mental Status Questionnaire (SPMSQ) was used to assess cognitive impairment (number of errors ≥5). The type of antithrombotic therapy, the time in therapeutic range (TTR) in case of treatment with warfarin and the degree of heart rate (HR) control (upon Holter ECG monitoring) were also assessed. Results ROC curve analysis indicated that TTR was associated with cognitive impairment (AUC 0.85 ± 0.03; 95% CI 0.77–0.88; p  100 bpm (OR 6.04, 95% 1.09–33.29; p = 0.039) with cognitive impairment. Conclusion Among patients with permanent AF, cognitive impairment is more frequent in those with inadequate antithrombotic therapy (aspirin therapy instead of anticoagulant therapy) and with suboptimal oral anticoagulation (TTR ≤60%) or heart rate control. Efforts should be made to optimize therapies related to these parameters.