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Wells criteria and modified Wells criteria: Clinical assessment for pulmonary embolism

Wells criteria and modified Wells criteria: Clinical assessment for pulmonary embolism
  • Clinical symptoms of DVT (leg swelling, pain with palpation)
3.0
  • Other diagnosis less likely than pulmonary embolism
3.0
  • Heart rate >100
1.5
  • Immobilization (≥3 days) or surgery in the previous four weeks
1.5
  • Previous DVT/PE
1.5
  • Hemoptysis
1.0
  • Malignancy
1.0
Probability Score
Traditional clinical probability assessment (Wells criteria)
High >6.0
Moderate 2.0 to 6.0
Low <2.0
Simplified clinical probability assessment (Modified Wells criteria)
PE likely >4.0
PE unlikely ≤4.0
DVT: deep vein thrombosis; PE: pulmonary embolism.
Data from van Belle A, Buller HR, Huisman MV, et al. Effectiveness of managing suspected pulmonary embolism using an algorithm combining clinical probability, D-dimer testing, and computed tomography. JAMA 2006; 295:172.
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