Importance and usage of the CHA2DS2-VASc score in predicting acute stent thrombosis

OBJECTIVEThe CHA2DS2-VASc score is used to estimate thromboembolic risk in atrial fibrillation (AF). Its usefulness in predicting outcome in patients after a percutaneous coronary intervention is unknown. We aimed to evaluate the predictive value of the CHA2DS2-VASc score in AF-free patients who have undergone stent implantation. DESIGNPatients were evaluated retrospectively. Among the 1371 patients, 38 presented with acute stent thrombosis (ST) and were included in the study. The CHA2DS2-VASc score was calculated before percutaneous coronary intervention and the association between the score and stent thrombosis was investigated. RESULTSThe patients were grouped into ST (+) and ST (−). The average CHA2DS2-VASc score for the ST (+) group was 3.79, whereas that for the ST (–) group was 2.16 (P