Tuesday, January 12, 2010

CHAD2 (CHADS) score

The CHADS score is a clinical prediction rule for estimating the risk of stroke in patients with non-rheumatic atrial fibrillation (AF) and is used to determine the degree of anticoagulation therapy required.

To Score...

C ongestive heart failure (1 point)
H ypertension > 160mmHg systolic (or treated hypertension) (1 point)
A ge > 75 (1 point)
D iabetes (1 point)
S - previous stroke or TIA (2 points)

Risk of stroke based on CHADS score

Recommendations for anticoagulation

  • High risk (score >= 2) - warfarin (unless contrainidcated)
  • Moderate risk (score 1) - aspirin or warfarin
  • Low risk (score 0) - aspirin


  • http://en.wikipedia.org/wiki/CHADS_Score
  • http://www.cardiology.org/tools/risk_of_stroke_AF.html