Wells score for PE (modified)

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1] Associate Editor(s)-in-Chief: Sadaf Sharfaei M.D.[2]

Pulmonary Embolism Modified Wells Score Calculator

Calculation of the Modified Wells Score for PE

This handy calculator computes the pre-test probability of pulmonary embolism using modified 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 of the Modified Wells Score for PE

Shown below is the pretest probability of PE according to modified Wells criteria:

• Score >4: PE likely (Rate of PE: ~40.7%)
• Score ≤4: PE unlikely (Rate of PE: ~7.8%)