Wells score for PE

Pre-test probability for PE. Combine with PERC rule for low-risk patients (PERC excludes PE without further testing if all criteria met).

Formula

DVT signs:                                      +3
PE more likely than alt dx:                     +3
HR > 100:                                       +1.5
Immobilization or surgery less than 4 weeks:    +1.5
Prior PE/DVT:                                   +1.5
Hemoptysis:                                     +1
Malignancy:                                     +1

≤ 4 = PE unlikely (D-dimer first)
> 4 = PE likely (CT-PA)

Interactive form coming soon

The calculation function is live in the codebase. Interactive form UI is being added — formulas above are reference-grade and ready to use at the bedside.