Wells' Criteria for Pulmonary Embolism

Objectifies risk of pulmonary embolism.

Clinical Signs and Symptoms of DVT

PE Is #1 Diagnosis, or Equally Likely

Heart Rate > 100

Immobilization at least 3 days, or Surgery in the Previous 4 weeks

Previous, objectively diagnosed PE or DVT


Malignancy w/ Treatment within 6 mo, or palliative


Source: Wells PS, Anderson DR, Rodger M, Stiell I, Dreyer JF, Barnes D, Forgie M, Kovacs G, Ward J, Kovacs MJ. Excluding pulmonary embolism at the bedside without diagnostic imaging: management of patients with suspected pulmonary embolism presenting to the emergency department by using a simple clinical model and d-dimer. Ann Intern Med. 2001 Jul 17;135(2):98-107. PubMed PMID: 11453709.