HAS-BLED Score

HAS-BLED Score: Hypertension (H), Abnormal Renal/Liver Function (A), Stroke (S), Bleeding History or Predisposition (B), Labile INR (L), Elderly (E), Drugs/Alcohol Concomitantly (D). Score > 3 is predictive of bleeding events.

Other factors for assessment of patient’s bleeding risk include

Prior bleeding within 3 mo
Prior bleeding with a similar type of procedure
Platelet abnormality (platelet count lower than 20,000 per microliter for low-risk and lower than 50,000 per microliter for high-risk procedures).
INR above therapeutic range at the time of the procedure
Prior bleeding with bridging therapy
Mechanical mitral heart valve
Active cancer

Reference:

Patel, Indravadan J., et al. “Society of Interventional Radiology Consensus Guidelines for the Periprocedural Management of Thrombotic and Bleeding Risk in Patients Undergoing Percutaneous Image-Guided Interventions-Part II: Recommendations: Endorsed by the Canadian Association for Interventional Radiology and the Cardiovascular and Interventional Radiological Society of Europe.” Journal of vascular and interventional radiology: JVIR (2019). https://www.ncbi.nlm.nih.gov/pubmed/31229333