Well’s criteria for DVT : Mnemonic

DVT - phlegmasia cerulea dolens

A: Alternate veins i.e. Superficial collateral veins (+1)

B: Bedridden for >/= 3 days in last 1 month OR Big surgery in last 3 months (+1)

C: Cancer – ongoing treatment or within 6 months (+1)

D: DVT

  • Unlikely: -2
  • Previous documented history: +1
  • Deep venous localized tenderness: +1

E: Edema

  • Entire leg swollen: +1
  • >3 cm larger calf than uninvolved side (10 cm below tibial tuberosity): +1
  • Pitting edema in symptomatic leg: +1

F: Fixity – Paralysis, Paresis or Plaster immobilization (+1)

Note the 3 sets of 3:
1. Bedridden for atleast 3 days in 1 month
2. Major surgery in last 3 months
3. More than 3 cm calf enlargement

Interpretation:

  • High probability if score >/= 3
  • Moderate probability if score 1-2
  • Low probability if score 0

Wells PS, Anderson DR, Bormanis J, et al. Value of assessment of pretrest probability of deep-vein thrombosis in clinical management. Lancet. 1997;350:1795-1798.


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