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Wells Score for Pulmonary Embolism

Pre-test probability of pulmonary embolism using Wells criteria.

About this calculator

Wells criteria stratify PE probability. At low probability (≤4) use D-dimer; at high probability (>4) proceed to CT pulmonary angiography.

Source

Wells PS et al. Derivation of a simple clinical model to categorize patients probability of pulmonary embolism. Thromb Haemost. 2000;83(3):416-420.

Formula version: wells-2000-v1