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ARRHYTHMIA SUPPORT NETWORK 

CHA2DS2-VASc SCORE FOR STROKE RISK  

For a score of zero no anticoagulation , for score > 1 consider anticoagulation after accessing bleeding risk 

Te risk for stroke or thrombosis is most commonly calculated by CHA2DS2-VASc and bleeding risk by HASBLED score.

Score of 3 or more indicates increased one year bleed risk on anticoagulation sufficient to justify caution or more regular review