CHADS2 Score for Atrial Fibrillation
Assess risk of stroke in atrial fibrillation
Warfarin anticoagulation titrated to an INR of 2.0-3.0 is recommended for the average patient with a CHADS2 score ≥2 unless contraindicated (e.g., history of frequent falls, clinically significant bleeding, inability to obtain regular INR). Either Warfarin or Aspirin can be used for the average patient with a CHADS2 score of 1 depending on physician discretion and patient preference. Aspirin 325 mg daily is recommended for the average patient with a CHADS2 score of 0.
Gage BF, van Walraven C, Pearce L, et al.
Gage BF, Waterman AD, Shannon W, Boechler M, Rich MW, Radford MJ.
Go AS, Hylek EM, Chang Y, Phillips KA, Henault LE, Capra AM, Jensvold NG, Selby JV, Singer DE.