Table 2.

Stroke risk stratifications schemes in patients with nonvalvular atrial fibrillation (BP: blood pressure, DM: diabetes mellitus, CHF: congestive heart failure, TIA: transient ischemic attack, CAD: coronary artery disease, LV: left ventricular fractional shortening).

Scheme	Low risk	Moderate risk	High risk
AFI [7]	Not moderate/high risk	Age > 65, not high risk	Prior ischemia, high BP, DM
SPAF [32]	Not moderate/high risk	High BP, not high risk	Prior ischemia, female >75 yrs, CHF, LV <25%, systolic BP > 160
ACCP [10, 33]	Not moderate/high risk	1 of the following: 65–75 yrs, DM, CAD, and not high risk	Prior ischemia, high BP, CHF, >75 yrs, or ≥2 moderate risk factors
CHADS2 [14]	SCORE = +1 for CHF, high BP, DM, >75 yr, and +2 for prior stroke/TIA
FRAMINGHAM [34]	SCORE = +6 for prior ischemia, 0 to 4 for BP, +4 for DM, +0 to 10 for age, 6 for female