Comparative prediction of long-term mortality by the CHA2DS2-VASc score and cardiac troponin I levels in patients with atrial fibrillation at the emergency department

Atrial fibrillation (AF) is the most common arrhythmia in clinical practice, and is associated with an increased risk of stroke, heart failure (HF) and mortality [1]. In this regard, the CHA2DS2-VASc score is a well-known predictor of stroke in patients with AF, with some studies evaluating its use as a marker for predicting all-cause death [2,3]. Cardiac troponin I (cTnI) has consistently provided prognostic information on the risk of stroke, vascular events and mortality in patients with AF [4].