Wells' Criteria for DVT
Clinical pretest probability score for suspected lower-extremity deep-vein thrombosis
INSTRUCTIONS
Use this calculator to estimate the pretest probability of lower-extremity DVT using bedside history and examination findings.
Bedridden recently >3 days or major surgery within 12 weeks* Calf swelling >3 cm compared to the other leg* Collateral (nonvaricose) superficial veins present* Entire leg swollen* Localized tenderness along the deep venous system* Pitting edema, confined to symptomatic leg* Paralysis, paresis, or recent plaster immobilization of the lower extremity* Previously documented DVT* Alternative diagnosis to DVT as likely or more likely* Result:
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