Wells probability score for PE
Definition: Pulmonary embolism is an acute disorder characterized by blockage of the main pulmonary arteries or one of its branches caused by an embolism.
|Clinically suspected DVT||3.0 points|
|Alternative Diagnosis is less likely then PE||3.0 points|
|Tachycardia (heart rate >100)||1.5 points|
|Immobilization ( >3d ) / surgeery in previous four weeks||1.5 points|
|History of DVT or PE||1.5 points|
|Malignancy ( with treatment within 6 months ) or Palliative||1.0 points|
Score >6.0: High (probability 59% based on pooled data)
Score 2.0 to 6.0: Moderate (probability 29% based on pooled data)
Score <2.0: Low (probability 15% based on pooled data)
Score > 4: PE likely. Consider diagnostic imaging.
Score 4 or less: PE unlikely. Consider D-dimer to rule out PE