Cardiology A

ATRIA Stroke Risk Score for Atrial Fibrillation

Predicts stroke/thromboembolism risk in AF patients. Continuous score 0–15. Developed from the ATRIA study (13 000+ AF patients).

Score interpretation

Low Risk (< 1 %/year) 0–5

ATRIA 0–5: annual thromboembolism rate < 1 % (0.63 % in the derivation cohort).

→ Anticoagulation may not be required. Discuss risk-benefit with patient.

Moderate Risk (1–2 %/year) 6

ATRIA 6: annual thromboembolism rate 1 % to < 2 % (1.91 %).

→ Consider anticoagulation (NOAC preferred). Assess bleeding risk concurrently.

High Risk (≥ 2 %/year) 7–15

ATRIA 7–15: annual thromboembolism rate ≥ 2 % (3.89 %).

→ Anticoagulation strongly recommended (NOAC preferred). Minimise modifiable stroke risk factors.

Interpretation bands for the ATRIA Stroke. Apply clinical judgement and local guidance.

Singer DE, et al. A new risk scheme to predict ischemic stroke and other thromboembolism in atrial fibrillation: the ATRIA study stroke risk score. J Am Heart Assoc. 2013;2(3):e000250.

Curated clinical cross-links plus same-class fallbacks.

Calculators

Drugs

Pathways

Decision support only — verify against a current formulary, NICE, or your local guideline before clinical use.