Pulmonary Embolism Wells Score

Select Criteria:
Symptoms of DVT (3 points)
No alternative diagnosis better explains the illness (3 points)
Tachycardia with pulse > 100 (1.5 points)
Immobilization (>= 3 days) or surgery in the previous four weeks (1.5 points)
Prior history of DVT or pulmonary embolism (1.5 points)
Presence of hemoptysis (1 point)
Presence of malignancy (1 point)
Results: Total Criteria Point Count:
Pulmonary Embolism Risk Score Interpretation
Score > 6:High probability
Score >= 2 and <= 6:Moderate probability
Score < 2:Low Probability
The article referenced below also refers to a cut point of 4 points or less as PE unlikely as long as the specific D-Dimer test is negative. Refer to the original article below for all details.
  1. Wells PS, Anderson DR, Rodger M, et. al. Derivation of a simple clinical model to categorize patients probability of pulmonary embolism: increasing the models utility with the SimpliRED D-dimer. Thromb Haemost. 2000 Mar;83(3):416-20.
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