Table III.
Modified Wells score for assessment of clinical likelihood for pulmonary embolism
| Criteria | Pointsa |
|---|---|
| Clinical signs and symptoms of DVT (objectively measured calf swelling and pain with palpation in deep vein region) | 3 |
| An alternative diagnosis is less likely than a diagnosis of PE | 3 |
| Heart rate >100 beats per minute | 1.5 |
| Immobilization or surgery in previous 4 weeks | 1.5 |
| Previous DVT or PE | 1.5 |
| Hemoptysis | 1 |
| Malignancy (current treatment, treated in previous 6 months, or palliative care) | 1 |
DVT, Deep venous thrombosis; PE, pulmonary embolism.
a
Total score >4 indicates that PE is likely; and total score ≤4 indicates that PE is unlikely.