Wells score for PE (original)

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Editor(s)-In-Chief: The APEX Trial Investigators, C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-In-Chief: Kashish Goel, M.D.;Kristin Feeney, B.S. [2]

Wells score Calculator

This handy calculator computes the pre-test probability of pulmonary embolism using Wells criteria. Check all boxes that apply to your patient:


Pulmonary Embolism Wells Score Calculator
Variable Score
Clinically suspected DVT (leg swelling, pain with palpation) 3
Alternative diagnosis is less likely than PE 3
Immobilization/surgery in previous four weeks 1.5
Previous history of DVT or PE 1.5
Tachycardia (heart rate more than 100 bpm) 1.5
Hemoptysis 1
Malignancy (treatment for within 6 months, palliative) 1
Wells Score:
Interpretation:



Interpretation Shown below is the pretest probability of PE according to Wells criteria.[1][2][3]

  • Score >6.0: High probability (Rate of PE: ~66.7%)
  • Score 2.0 to 6.0: Moderate probability (Rate of PE: ~20.5%)
  • Score <2.0: Low probability (Rate of PE: ~3.6%)
  1. ↑
  2. ↑
  3. ↑ Stein PD, Woodard PK, Weg JG, Wakefield TW, Tapson VF, Sostman HD, Sos TA, Quinn DA, Leeper KV, Hull RD, Hales CA, Gottschalk A, Goodman LR, Fowler SE, Buckley JD (2007). "Diagnostic pathways in acute pulmonary embolism: recommendations of the PIOPED II Investigators". Radiology. 242 (1): 15–21. doi:10.1148/radiol.2421060971. PMID 17185658.
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