Scarvelis and Wells Clinical Assessment tool for Risk of Deep Vein Thrombosis
- Active cancer (treatment within last 6 months or palliative) – 1 point
- Calf swelling >3 cm compared to other calf (measured 10 cm below tibial tuberosity) – 1 point
- Collateral superficial veins (non-varicose) – 1 point
- Pitting edema (confined to symptomatic leg) – 1 point
- Swelling of entire leg – 1 point
- Localized pain along distribution of deep venous system – 1 point
- Paralysis, paresis, or recent cast immobilization of lower extremities – 1 point
- Recently bedridden > 3 days, or major surgery requiring regional or general anesthetic in past 4 weeks – 1 point
- Alternative diagnosis at least as likely – Subtract 2 points
Assessment scoring guide:
- Score of 2 or higher – deep vein thrombosis is likely. Follow up with diagnostic tests – imaging the leg veins.
2. Score of less than 2 – deep vein thrombosis is unlikely.
Scarvelis, D and Wells, P, S. 2006. Diagnosis and Treatment of Deep Vein Thrombosis.Journal of the American Medical Association. 175 (9) 1087-1092.