CHADS 2 SCORE
Congestive Heart Failure = 1 Point
Hypertension = 1 Point
Age > 75 = 1 Point
Diabetes = 1 Point
Stroke or TIA History = 2 Points
Risk of Stroke from Afib
1 Point = Intermediate Risk (2.8% risk of event per year if no coumadin)
2 Points = Intermediate Risk (4.0% risk of event per year if no coumadin)
3 Points = High Risk (5.9% risk of event per year if no coumadin)
4 Points = High Risk (8.5% risk of event per year if no coumadin)
5 Points = High Risk (12.5% risk of event per year if no coumadin)
6 Points = High Risk (18.2% risk of event per year if no coumadin)