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Pulmonary embolus risk stratification criteria
| Risk factor | Points for each risk factor |
|---|---|
| Knee surgery | 5 |
| Charlson Comorbidity Index (CCI) | 1 × CCI |
| Atrial fibrillation | 4 |
| Postoperative deep vein thrombosis | 14 |
| Chronic obstructive pulmonary disease | 2 |
| Anemia | 2 |
| Depression | 2 |
| BMI (kg/m2) | |
| ≤ 25 | 0 |
| 25–30 | 1 |
| > 30 | 2 |
