Heart and clots · Stroke risk in atrial fibrillation

CHA₂DS₂-VASc

Yearly stroke risk in atrial fibrillation, to decide on anticoagulation.

TellClot forms where blood sits still. Each point marks an atrium that empties poorly or vessels that are already damaged.

Age

Sex

Heart failure, or a reduced ejection fraction+1
High blood pressure+1
Diabetes+1
Prior stroke, TIA, or clot to an artery elsewhere+2
Vascular disease: prior heart attack, peripheral artery disease, or aortic plaque+1

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