The Wells score utilized to determine the likelihood of pulmonary emboli
clinically suspected DVT – 3.0 points
alternative diagnosis is less likely than PE – 3.0 points
tachycardia – 1.5 points
immobilization/surgery in previous four weeks – 1.5 points
history of DVT or PE – 1.5 points
hemoptysis – 1.0 points
malignancy (treatment for within 6 months, palliative) – 1.0 points
Traditional interpretation:
Score >6.0 – High (probability 59%)
Score 2.0 to 6.0 – Moderate (probability 29%])
Score <2.0 – Low (probability)
Alternate interpretation:
Score > 4 – PE likely. Consider diagnostic imaging.
Score 4 or less – PE unlikely. Consider D-dimer to rule out PE.