DVT Risk Calculator

Ongoing cancer treatment/palliative care within past 6 months

No 0 Yes +1

Recently confined to bed for > 3 days, or major surgery in past 12 weeks

No 0 Yes +1

Calf circumference increased by > 3 cm compared to opposite leg (measured 10 cm below tibial tuberosity)

No 0 Yes +1

Presence of superficial collateral veins (excl varicose veins)

No 0 Yes +1

Swelling affecting entire leg

No 0 Yes +1

Localised pain/tenderness along the course of the deep veins

No 0 Yes +1

Pitting oedema on affected leg

No 0 Yes +1

Paralysis/weakness, or recent plaster cast immobilisation of lower limb

No 0 Yes +1

Previous history of DVT

No 0 Yes +1

Alternative diagnosis as likely as DVT

No 0 Yes -2