Interactive HAS-BLED Score calculator for major bleeding risk in atrial fibrillation. Requires the calculator gadget.
Usage: {{HASBLED Calculator}}
HAS-BLED Score
HAS-BLED Score — Bleeding Risk
| Criteria
|
No (0)
|
Yes (+1)
|
| H — Hypertension (uncontrolled SBP >160)
|
1
|
|
| A — Abnormal renal function (dialysis, transplant, Cr >2.26) and/or liver function (cirrhosis, bilirubin >2×, AST/ALT/ALP >3×)
|
1
|
(+1 each, max 2)
|
| S — Prior stroke
|
1
|
|
| B — Bleeding history/predisposition
|
1
|
|
| L — Labile INR (unstable/high, TTR <60%)
|
1
|
|
| E — Elderly (age >65)
|
1
|
|
| D — Drugs (antiplatelets, NSAIDs) and/or alcohol (≥8 drinks/week)
|
1
|
(+1 each, max 2)
|
| HAS-BLED Score
|
/ 9
|
| Interpretation
|
| 0–2
|
Low-moderate risk — Relatively low bleeding risk. Anticoagulation generally recommended if indicated.
|
| ≥3
|
High risk — Consider modifiable risk factors (HTN, labile INR, drugs/alcohol). Score ≥3 does NOT contraindicate anticoagulation but warrants closer monitoring.
|
| References
|
- Pisters R, Lane DA, Nieuwlaat R, et al. A novel user-friendly score (HAS-BLED) to assess 1-year risk of major bleeding in patients with atrial fibrillation. Chest. 2010;138(5):1093-1100. PMID 20299623.
- Note: HAS-BLED ≥3 is NOT a contraindication to anticoagulation — it identifies patients who need closer follow-up and correction of modifiable risk factors.
|
