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  CHADS2 Atrial Fibrillation Stroke risk calculator  

Congestive Heart Failure Yes (+1)
Hypertension Yes (+1)
Age > 75 years Yes (+1)
Diabetes Mellitus Yes (+1)
Previous Stroke or TIA Yes (+2)
CHADS2 Score (points)

Score Interpretation:

Calculation(s) used

CHAD2 scoring: A point is given for each category with a "yes" answer, two points if patient has had a previous Stroke or TIA and the result is the total sum of the points for each question.

Interpretation

Stroke Risk

CHADS2 Score   Stroke Risk (%)       95% CI      
0
1.9
 1.23.0
1
2.8
 2.03.8
2
4.0
 3.15.1
3
5.9
 4.67.3
4
8.5
 6.311.1
5
12.5
 8.217.5
6
18.2
10.527.4

Anti-coagulation

 
CHADS2 Score Risk Anticoagulation Therapy Considerations
0 Low Aspirin Aspirin daily
1 Moderate Aspirin or Warfarin Aspirin daily
OR
Target INR 2-3
>=2 Moderate or High Warfarin Target INR 2-3
(unless contraindicated)



  

References
1. Needs referencing!

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