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Wells' Criteria for DVT

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Step 1 of 10 10%

Active cancer *

Step 1 of 10

Bedridden recently >3 days or major surgery within 12 weeks *

Step 2 of 10

Calf swelling >3 cm compared to the other leg *

Step 3 of 10

Collateral (nonvaricose) superficial veins present *

Step 4 of 10

Entire leg swollen *

Step 5 of 10

Localized tenderness along the deep venous system *

Step 6 of 10

Pitting edema, confined to symptomatic leg *

Step 7 of 10

Paralysis, paresis, or recent plaster immobilization of the lower extremity *

Step 8 of 10

Previously documented DVT *

Step 9 of 10

Alternative diagnosis to DVT as likely or more likely *

Step 10 of 10

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    Wells PS, Anderson DR, Bormanis J, et al. Value of assessment of pretest probability of deep-vein thrombosis in clinical management. Lancet. 1997;350(9094):1795-1798.
    Wells PS, Owen J, Doucette S, et al. Does this patient have deep vein thrombosis? JAMA. 2006;295(2):199-207.
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