Wells Score for PE Calculator

Estimate the pre-test probability of pulmonary embolism (PE) using the Wells clinical prediction rule.

Clinical signs/symptoms of DVT (3 points)

PE is #1 diagnosis, or equally likely (3 points)

Heart rate >100 bpm (1.5 points)

Immobilisation ≥3 days or surgery in previous 4 weeks (1.5 points)

Previous DVT or PE (1.5 points)

Hemoptysis (1 point)

Malignancy (treatment within 6 months or palliative) (1 point)

How to Use the Wells PE Calculator

Select 'Yes' for each criterion present.
Note that several criteria score 1.5 points.
Click 'Calculate' to see probability and two-tier classification.

Casi d'Uso

•Pre-test probability assessment for suspected PE.
•Guiding CT pulmonary angiography decisions.
•Risk stratification in emergency settings.

Formula

Wells PE: DVT signs(3) + PE most likely(3) + HR>100(1.5) + Immobilisation(1.5) + Prior DVT/PE(1.5) + Hemoptysis(1) + Malignancy(1). ≤1=Low; 2–6=Moderate; >6=High.

Domande Frequenti

What is the Wells PE score?

The Wells score for PE is a clinical prediction rule that estimates the probability of pulmonary embolism in symptomatic patients. It stratifies patients into low, moderate, and high probability categories.

How is the score interpreted?

≤1 = Low probability (1.3%). 2–6 = Moderate (16%). >6 = High (38%). Two-tier: ≤4 = PE unlikely; >4 = PE likely (consider CT pulmonary angiography).

Medical disclaimer

This calculator is for educational purposes only. It does not replace professional medical evaluation. Always consult a qualified healthcare provider for clinical decisions.