In a "real world" cohort of consecutive patients with nonvalvular atrial fibrillation, a high SAMe-TT2R2 score (reflecting poor anticoagulation control with poor time in therapeutic range) was associated with more bleeding, adverse cardiovascular events, and mortality during follow-up.
In anticoagulated AF patients, a validated specific bleeding risk score, HAS-BLED, should be used for assessing major bleeding. The practice of using CHADS2 and CHA2DS2-VASc as a measure of high bleeding risk should be discouraged, given its inferior predictive performance compared with the HAS-BLED score.
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