CHADS2 score for assessing the risk of stroke in AF
  • Congestive heart failure (1 point)
  • Hypertension (1 point)
  • Age >75 years (1 point)
  • Diabetes Mellitus (1 point)
  • Prior Stroke or TIA (2 points)
  • Anticoagulation based on the CHADS2 score:
Score
Risk
Anticoagulation therapy
Considerations
0
Low
 None or Aspirin
Aspirin daily
A
Moderate
Aspirin or Warfarin
Aspirin daily or raise INR to 2.0-3.0, depending on patient preference
≥2
Moderate or High
Warfarin
Raise INR to 2.0-3.0 unless contraindicated

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