VTEVTE
Wells Score for Pulmonary Embolism (Revised)
Stratifies pre-test probability of pulmonary embolism to guide imaging decisions.
Clinical signs and symptoms of DVT (leg swelling and pain on palpation of deep veins)?
PE is #1 diagnosis or equally likely?
Heart rate >100 bpm?
Immobilisation ≥3 days OR surgery in previous 4 weeks?
Previous objectively diagnosed DVT or PE?
Haemoptysis?
Cancer (treatment within past 6 months or palliative)?
0
Wells PE Score/ 12.5
Low Probability
Score ≤1: Low PE probability. PE unlikely — D-dimer can safely rule out PE if negative. Simplified score: ≤4 = PE unlikely. Simplified: PE Unlikely (≤4).
Reference: Wells PS et al. Ann Intern Med 2001
Medical Disclaimer: This calculator is a clinical decision support tool for qualified healthcare professionals. It does not replace clinical judgement. Always interpret results in the full clinical context. Reference: Wells PS et al. Ann Intern Med 2001.