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Table 1 Wells criteria for the prediction of deep vein thrombosis (DVT)a

From: Wells criteria for DVT is a reliable clinical tool to assess the risk of deep venous thrombosis in trauma patients

Clinical Characteristic

Score

Active cancer (patient either receiving treatment for cancer within the previous 6 months or currently receiving palliative treatment)

1

Paralysis, paresis, or recent cast immobilization of the lower extremities

1

Recently bedridden for ≥ 3 days, or major surgery within the previous 12 weeks requiring general or regional anesthesia

1

Localized tenderness along the distribution of the deep venous system

1

Entire leg swelling

1

Calf swelling at least 3 cm larger than that on the asymptomatic side (measured 10 cm below tibial tuberosity)

1

Pitting edema confined to the symptomatic leg

1

Collateral superficial veins (non-varicose)

1

Previously documented deep vein thrombosis

1

Alternative diagnosis at least as likely as deep vein thrombosis

-2

  1. a Wells scoring system for DVT: -2 to 0: low probability, 1 to 2 points: Moderate probability, 3 to 8 points: high probability