Wells Score Calculator (DVT/PE)

Wells Score for DVT

Active cancer (treatment within 6 months or palliative)

Paralysis, paresis, or recent cast of lower extremity

Bedridden > 3 days or major surgery within 12 weeks

Localized tenderness along deep venous system

Entire leg swollen

Calf swelling > 3 cm compared to other leg

Pitting edema confined to symptomatic leg

Collateral superficial veins (non-varicose)

Previously documented DVT

Alternative diagnosis as likely or more likely

Wells Score for PE

Clinical signs/symptoms of DVT

PE as likely or more likely than alternative diagnosis

Heart rate > 100 bpm

Immobilization (>= 3 days) or surgery in past 4 weeks

Previous PE or DVT

Hemoptysis

Malignancy (treatment within 6 months or palliative)

Formula

Wells DVT: sum of 10 criteria (-2 to +9) | Wells PE: sum of 7 criteria (0-12.5)

Frequently Asked Questions

What is the Wells Score?

The Wells Score estimates clinical probability of DVT or PE using clinical criteria. Separate scoring systems exist for DVT (10 criteria) and PE (7 criteria).

When should D-dimer be ordered?

D-dimer is most useful in low-to-moderate probability patients. A negative D-dimer with low/moderate Wells score effectively rules out DVT/PE. High probability patients should go directly to imaging.

What is the difference between DVT and PE Wells scores?

They are separate scoring systems. DVT Wells uses 10 criteria for leg symptoms. PE Wells uses 7 criteria including DVT signs, heart rate, immobilization, and hemoptysis.

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