Dynamic Changes of CHA2DS2-VASc Score and the Risk of Ischaemic Stroke in Asian Patients with Atrial Fibrillation: A Nationwide Cohort Study

Abstract

In AF patients, stroke risk as assessed by the CHA₂DS₂-VASc score is dynamic and changes over time. Rates of ischaemic stroke increased when patients accumulated risk factors, and were re-classified into higher CHA₂DS₂-VASc score categories. Stroke risk assessment is needed at every patient contact, as accumulation of risk factors with increasing CHA₂DS₂-VASc score translates to greater stroke risks over time.