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Current section: Scores

Wells Score for Pulmonary Embolism

A scale for assessing the clinical probability of pulmonary embolism, used in stable patients (without shock or hypotension) with suspected PE.

Clinical parameters

Clinical signs of Deep Vein Thrombosis (DVT)

Required

Alternative diagnosis less likely than PE

Required

Heart rate ≥ 100 bpm

Required

Surgery or immobilization within the last 4 weeks

Required

Previous PE or DVT

Required

Hemoptysis

Required

Active cancer (treated in the last 6 months or on palliative care)

Required

Clinical context

Alternatively, a two-tier interpretation can be used: 0-4 points indicate PE unlikely; ≥5 points indicate PE likely.