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nonvalvular atrial


Definition: Atrial fibrillation caused by cardiac or systemic disorders other than mitral valve stenosis. This distinction is important for the assessment of thromboembolic risk due to atrial fibrillation, which is much greater than with concomitant mitral stenosis.

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© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review date: Sep 19, 2016.