Table 2. The HAS-BLED score.
| Risk factor | Clinical characteristic | Points |
|---|---|---|
| H | Hypertension systolic blood pressure >160 mmHg |
1 |
| A | Abnormal liver OR kidney function dialysis/renal transplantation/serum creatinine ≥200 mmol/L cirrhosis or bilirubin 2x upper limit of normal with AST/ALT/ALP 3x upper limit normal |
1 each |
| S | Stroke | 1 |
| B | Bleeding history of bleeding or a bleeding diathesis |
1 |
| L | Labile INRs | 1 |
| E | Elderly >65 years |
1 |
| D | Drugs OR alcohol concomitant use of antiplatelets/NSAIDs ≥8 drinks/week |
1 each |
HAS-BLED score ≥3 is considered as a high-risk of bleeding
ALP alkaline phosphatase
ALT alanine aminotransferase
AST aspartate aminotransferase
NSAIDs non-steroidal anti-inflammatory drugs
Source: reference 17