Choose all stroke risk factors:present:
The CHADS2 score is the most widely used and best validated risk scheme, having been tested in more than a dozen cohorts.
Despite its widespread adoption however, the CHADS2 score has several mportant limitations. Among them are it's modest predictive ablility, and it's classification of a large group of patients as being indeterminate risk.
In an effort to identify truly low risk patients with AF, the CHADS2-VASc score was developed by incorporating additional risk factors. Although the overall predictive ability is similar to the CHADS2 score, the CHADS2-VASc score consistently improved the identification of “truly low risk” AF patients.
Annual stroke risk according to risk score
|Stroke Score||Annual Stroke Risk|