WELLS SCORE IN CLINICAL ASSESSMENT OF DVT

Predisposing factors

Active cancer (undergoing active or palliative treatment or discovered less than 6 months ago)

1 point

Paresis, paralysis or recent cast immobilization of the lower limbs

1 point

Recent bed rest > 3 days or major surgery < 4 weeks

1 point

Physical examination

Pain at palpation of the course of the deep veins

1 point

Swelling ( = generalized edema) of an entire limb

1 point

Unilateral swelling of a calf (>3 cm difference between the 2 sides)

NB.: measured 10 cm below the anterior tibial tuberosity

1 point

pitting edema

1 point

(non-varicose) collateral venous circulation

1 point

Alternative diagnosis at least as likely as DVT

−2 points

LOW clinical probability (3%) score: 0 points

Clinical probability INTERMEDIATE (17%) score: 1 - 2 points

HIGH clinical probability (75%) score > 3 points