"The Wells criteria for pulmonary embolism is a risk stratification score and clinical decision rule to estimate the probability for acute pulmonary embolism (PE) in patients in which history and examination suggests acute PE is a diagnostic possibility. It provides a pre-test probability which, if deemed unlikely, can then be used in conjunction with a negative D-dimer to rule out PE avoiding imaging 1."
"Three tier:"
"0-1: low risk"
"2-6: moderate risk"
">6: high risk"
"Two tier:"
"≤4: unlikely"
"≥4.5: likely"
"Wells criteria for deep venous thrombosis"
"Geneva score for PE"
Expected headings
"Criteria"