- The HAS-BLED tool is often used to assess a patient’s bleeding risk before starting the use of anticoagulation – particularly in relation to atrial fibrillation.
- It is often used in conjunction with the CHA2DS2-VASc score to weigh the risks and benefits of anticoagulation.
- Each item is worth a single point
- A score of ≥3 indicates “high risk” for bleeding if anticoagulation is used and it is recommended to either very closely follow-up the patient or consider alternatives to anticoagulation
|H||Hypertension >160mmHg systolic|
|A||Abnormal renal or liver function|
|S||Previous history of stroke|
|B||Previous history of major bleeding|
|E||IV drug use (<60% of time in therapeutic range)|
|D||Drug and alcohol use – NSAIDs, anti-platelet agents, alcohol >8 weeks / week|