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Wells score

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.

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