II. Indications

  1. Assess DVT Pretest Probability

III. Criteria

  1. Active malignancy within last six months: 1 point
  2. Lower extremity immobility: 1 point
    1. Cast
    2. Paralysis
  3. Restricted mobility within last 4 weeks: 1 point
    1. Bedridden for more than 3 days
    2. Major surgery
  4. Localized pain over deep venous course: 1 point
  5. Calf circumference 3 cm over opposite calf: 1 point
    1. Measure 10 cm below tibial tuberosity
  6. Entire leg swollen: 1 point
  7. Unilateral lower extremity Pitting Edema: 1 point
  8. Non-varicose collateral superficial veins: 1 point
  9. Other diagnosis at least as likely as DVT: -2 points

IV. Interpretation

  1. Low Probability (3% DVT frequency): 0 Points
  2. Medium Probability (17% DVT frequency): 1-2 Points
  3. High Probability (75% DVT frequency): >2 Points

VI.

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