Anticoagulation Risk Scores

CHA₂DS₂-VASc + HAS-BLED (2024 Guidelines)

CHA₂DS₂-VASc (Stroke Risk)

Congestive heart failure ⓘSigns/symptoms of HF or LVEF ≤40% Hypertension ⓘBP >140/90 mmHg or on antihypertensive treatment Age ≥75 years (2 points) ⓘ2 points if ≥75 Diabetes mellitus ⓘDiagnosed diabetes or on treatment Prior stroke/TIA/thromboembolism (2 points) Vascular disease ⓘPrior MI, peripheral artery disease, or aortic plaque Age 65–74 years (1 point) Female sex (1 point)

CHA₂DS₂-VASc Score

0

HAS-BLED (Bleeding Risk)

Uncontrolled hypertension ⓘSBP >160 mmHg Abnormal renal function ⓘDialysis, renal transplant, or Cr ≥2.26 mg/dL (200 µmol/L) Abnormal liver function ⓘCirrhosis or bilirubin >2× ULN + AST/ALT/ALP >3× ULN Prior stroke Bleeding history or predisposition Labile INR ⓘTime in therapeutic range <60% Elderly (>65 years) Concomitant antiplatelet or NSAID Alcohol excess (>8 drinks/week)

HAS-BLED Score

0

Patient Report Summary

References

• CHA₂DS₂-VASc: Lip GYH et al. Chest 2010 & 2024 ACC/AHA AF Guideline

• HAS-BLED: Pisters R et al. Chest 2010 & 2024 ACC/AHA AF Guideline

Cardiac Calculators Suite • February 2026