Scarvelis and Wells Clinical Assessment tool for Risk of Deep Vein Thrombosis

Scarvelis and Wells Clinical Assessment tool for Risk of Deep Vein Thrombosis

  1. Active cancer (treatment within last 6 months or palliative) – 1 point
  2. Calf swelling >3 cm compared to other calf (measured 10 cm below tibial tuberosity) – 1 point
  3. Collateral superficial veins (non-varicose) – 1 point
  4. Pitting edema (confined to symptomatic leg) – 1 point
  5. Swelling of entire leg – 1 point
  6. Localized pain along distribution of deep venous system – 1 point
  7. Paralysis, paresis, or recent cast immobilization of lower extremities – 1 point
  8. Recently bedridden > 3 days, or major surgery requiring regional or general anesthetic in past 4 weeks – 1 point
  9. Alternative diagnosis at least as likely – Subtract 2 points

Assessment scoring guide:

  1. 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.

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