Table 2.

Geneva and Wells Prediction Rules for Pulmonary Embolism

Geneva ScorePointsWells ScorePoints
PaCO2 = partial pressure of carbon dioxide, arterial; PaO2 = partial pressure of oxygen, arterial.
Adapted from Am J Med, Vol 113, Chagnon I, Bounameaux H, Aujesky D, et al, Comparison of two clinical prediction rules and implicit assessment among patients with suspected pulmonary embolism, pp 269–275, Copyright 2002, with permission from Elsevier.
Previous pulmonary embolism or deep vein thrombosis+2Previous pulmonary embolism or deep vein thrombosis+1.5
Heart rate >100 beats per minute+1Heart rate >100 beats per minute+1.5
Recent surgery+3Recent surgery or immobilization+1.5
Age, yearsClinical signs of deep vein thrombosis+3
    60–79+1Alternative diagnosis less likely than+3
    ≥80+2Pulmonary embolism+1
    <4.8 kPA (36 mm Hg)+1Cancer
    4.9–5.19 kPa (37–38.9 Hg)+4
    <6.5 kPa (48.7 mm Hg)+2
    6.5–7.99 kPa (48.7–55.0 mm Hg)+1
    8–9.49 kPa (60–71.2 mm Hg)+1
    9.5–10.99 kPa (71.4–82.4 mm Hg)+1
Elevated hemidiaphragm5–8
Clinical probability≥9Clinical probability0–1
    Low    Low2–6
    Intermediate    Intermediate≥7
    High    High