CHA2DS2-VASc stroke risk score

The CHA2DS2-VASc stroke risk score calculates stroke risk for patients with atrial fibrillation. This model is intended to be used for patients who have been diagnosed with atrial fibrillation or atrial flutter.

Research authors: Gregory Y.H. Lip, Robby Nieuwlaat, Ron Pisters, Deirdre A. Lane, Harry J.G.M. Crijns
Version: 1.22
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Calculated CHA2DS2-VASc risk score: points

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The CHA2DS2-VASc score is recommended to be used for stroke risk assessment in patients with atrial fibrillation by different international clinical practice guidelines (such as the ESC guideline, AHA guideline, and the NICE guideline). The CHA2DS2-VASc score was developed as an improved score compared to the CHADS2

Even though the CHA2DS2-VASc score shows a moderate to good performance in terms of discrimination (C-index ranges between 0.6 - 0.71) in validation studies. The model should be used to identify patients at truly low risk.  


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Calculations alone should never dictate patient care, and are no substitute for professional judgement. See our full disclaimer.

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