“DVT Probability: Wells Score System” From Medscape

This list is from DVT Probability: Wells Score System from reference.medscape.com.

See also Diagnostic Errors in Patients With Pulmonary Symptoms from medscape.com

DVT Risk Score Interpretation

3-8 Points: High probability of DVT
1-2 Points: Moderate probability
-2-0 Points: Low Probability

The Wells Score For DVT:

  • Paralysis, paresis or recent orthopedic casting of lower extremity (1 point)
  • Recently bedridden (more than 3 days) or major surgery within past 4 weeks (1 point)
  • Localized tenderness in deep vein system (1 point)
  • Swelling of entire leg (1 point)
  • Calf swelling 3 cm greater than other leg (measured 10 cm below the tibial tuberosity) (1 point)
  • Pitting edema greater in the symptomatic leg (1 point)
  • Collateral non varicose superficial veins (1 point)
  • Active cancer or cancer treated within 6 months (1 point)
  • Alternative diagnosis more likely than DVT (Baker’s cyst, cellulitis, muscle damage, superficial venous thrombosis, post phlebitic syndrome, inguinal lymphadenopathy, external venous compression) (-2 points)

(1) Wells PS, Anderson DR, Bormanis J, et. al. Value of assessment of pretest probability of deep-vein thrombosis in clinical management [PubMed Abstract] [Full Text HTML]. Lancet. 1997 Dec 20-27;350(9094):1795-8

The above article is cited in four systemic reviews according to PubMed including:

Cochrane Database Syst Rev. 2016 Aug 5;(8):CD010864. doi: 10.1002/14651858.CD010864.pub2. D-dimer test for excluding the diagnosis of pulmonary embolism [PubMed Abstract] [Plain Language Summary].

Venous Thromboembolic Diseases: The Management of Venous Thromboembolic Diseases and the Role of Thrombophilia Testing [Internet] [PubMed Abstract] [Full Text PDF].Editors National Clinical Guideline Centre (UK). Source London: Royal College of Physicians (UK); 2012 Jun.
National Institute for Health and Clinical Excellence: Guidance .

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