Cardiology

Wells score — DVT

Pre-test probability of deep vein thrombosis.

Active cancer (treatment within 6 months)

Paralysis / paresis / recent cast of leg

Bedridden ≥ 3 days or major surgery within 12 weeks

Localised tenderness along deep venous system

Entire leg swollen

Calf swelling > 3 cm vs other leg

Pitting oedema confined to symptomatic leg

Collateral superficial (non-varicose) veins

Previously documented DVT

Alternative diagnosis at least as likely

Wells DVT score

DVT unlikely

Low probability. A negative D-dimer effectively rules out DVT.

Educational decision-support only — not a substitute for clinical judgement or your institutional protocol. Verify against primary guidelines before acting.