HASBLED Calculator
HASBLED Calculator
What is the calculator for and who produced it?
The HAS-BLED score for major bleeding risk estimates the risk of major bleeding for patients on anticoagulation. It was created by Ron Pisters, a cardiologist at Rijinstate Ziekenhuis Arnhem in the Netherlands
How should it be used?
It can be used in combination with CHA2DS2-VASc to work out the benefits and risks of anticoagulation in patients with Atrial Fibrillation
Interpretation of score
| HASBLED | Risk Group | Risk of major bleeding | Bleeds per 100 patient years | Recommendation |
| 0 | Relatively low | 0.9% | 1.13 | Should consider anticoagulation |
| 1 | Relatively low | 3.4% | 1.02 | Should consider anticoagulation |
| 2 | Moderate | 4.1% | 1.88 | Can consider anticoagulation |
| 3 | High | 5.8% | 3.72 | Consider alternatives to anticoagulation |
| 4 | High | 8.9% | 8.70 | Consider alternatives to anticoagulation |
| 5 | High | 9.1% | 12.5 | Consider alternatives to anticoagulation |
| >5 | Very high | - | - | Consider alternatives to anticoagulation |