Steensig K, et al. - In patients without atrial fibrillation, researchers ascertained if the CHA₂DS₂-VASc score can predict the risk of atrial fibrillation and thromboembolic events. For this investigation, coronary angiography patients were grouped according to CHA₂DS₂-VASc score between 2004 and 2012. A total of 78,233 patients with group sizes ranging between 8,299 (CHA₂DS₂-VASc >4) and 19,882 (CHA₂DS₂-VASc 2) were included. The CHA₂DS₂-VASc score predicted a future diagnosis of atrial fibrillation and the composite risk of ischemic stroke, transient ischemic attack, or systemic embolism in patients without atrial fibrillation undergoing coronary angiography. In a patient with atrial fibrillation, a CHA₂DS₂-VASc score of 3 was related to a risk that would justify prophylactic oral anticoagulation treatment.