🩸 ORBIT Bleeding Score (AF)
Estimate anticoagulation bleeding risk in atrial fibrillation with ORBIT.
ORBIT Bleeding Score (AF)
Anaemia (Hb low / Hct < 36% F, < 40% M)
Age > 74 years
Bleeding history
eGFR < 60 mL/min/1.73m²
Treatment with antiplatelet
When to use
Assess major bleeding risk and target modifiable factors.
How it works
Anaemia (2), age > 74 (1), bleeding history (2), eGFR < 60 (1), antiplatelet use (1). 0–2 low, 3 medium, 4–7 high.
Key points
- Identifies modifiable contributors to bleeding.
- Should not by itself withhold indicated anticoagulation.
- Compares favourably with HAS-BLED in some cohorts.
References
Decision support for licensed clinicians only; not a substitute for clinical judgement, diagnosis or local protocols.