Wells Score for PE
Score the Wells criteria for pulmonary embolism.
Open the calculator → Runs in your browser. Data leaves only if you deliberately send a problem report from the interactive tool.
Example
- PE is most likely diagnosis
- Yes
- Heart rate > 100
- Yes
Result: Wells PE total: 4.5 (Moderate probability)
The tool opens with these values already filled in. Replace them with your own.
What the result means
- <=4
- PE unlikely per the two-tier Wells PE model. Consider D-dimer to further risk-stratify per source.
- >4
- PE likely per the two-tier Wells PE model. Imaging (CTPA or V/Q) per source.
What you enter
- Clinical signs of DVT (3)
- PE is most likely diagnosis (3)
- Heart rate > 100 (1.5)
- Immobilization or surgery in past 4 weeks (1.5)
- Prior PE or DVT (1.5)
- Hemoptysis (1)
- Active malignancy (1)
What this is
Check the seven boxes that apply to your patient; Sophie Well totals the points and reports the dichotomized band - PE likely (>4) or PE unlikely (<=4) - that pairs with D-dimer to support a PERC- or imaging-based workup. Source: Wells PS, et al. Thromb Haemost. 2000.
When to use it
Use this at the bedside when you are deciding between a low-probability rule-out (D-dimer +/- PERC) and proceeding straight to CT pulmonary angiography. Wells is one input to PE workup, not a substitute for clinical judgment, vital-sign trends, or the patient's hemodynamic stability.
How this is calculated
Wells PS, et al. Derivation of a simple clinical model to categorize patients' probability of pulmonary embolism. Thromb Haemost. 2000;83(3):416-420. Read the source ↗
A reference and educational tool. Not medical, legal, or financial advice, and not a substitute for clinician judgment.
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