Clinical use
Use this calculator for pre-test probability of pulmonary embolism in thepulmonary workflow. It is decision support and should be interpreted with the patient context, local protocols, and clinician judgment.
Calculate Wells PE
Interpretation
≤4: PE unlikely — proceed to D-dimer. >4: PE likely — proceed directly to CTPA. Applies to ED populations, not ICU or post-surgical.
Required inputs
- Clinical Signs DVT
- PE Is Likely Diagnosis
- Heart Rate 100 +
- Immobilization Or Surgery
- Previous DVT PE
- Hemoptysis
- Malignancy
Evidence and limitations
This page cites 1 published reference. Confirm units and inclusion criteria before applying the output; calculators do not replace assessment, escalation, or local policy.
References
- Wells PS et al. Thromb Haemost 2000;83:416-420
Frequently asked questions
What is the Wells Criteria for PE?
Wells Criteria for PE is a clinical calculator used for Pre-test probability of pulmonary embolism.
How do I interpret the Wells Criteria for PE?
≤4: PE unlikely — proceed to D-dimer. >4: PE likely — proceed directly to CTPA. Applies to ED populations, not ICU or post-surgical.
What inputs are required for the Wells Criteria for PE?
Required inputs include Clinical Signs DVT, PE Is Likely Diagnosis, Heart Rate 100 +, Immobilization Or Surgery, Previous DVT PE, Hemoptysis, Malignancy.
What is the evidence behind the Wells Criteria for PE?
The Wells Criteria for PE page cites Wells PS et al. Thromb Haemost 2000;83:416-420.
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