Geneva and Wells Prediction Rules for Pulmonary Embolism
Geneva Score | Points | Wells Score | Points |
---|---|---|---|
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 | +2 | Previous pulmonary embolism or deep vein thrombosis | +1.5 |
Heart rate >100 beats per minute | +1 | Heart rate >100 beats per minute | +1.5 |
Recent surgery | +3 | Recent surgery or immobilization | +1.5 |
Age, years | Clinical signs of deep vein thrombosis | +3 | |
60–79 | +1 | Alternative diagnosis less likely than | +3 |
≥80 | +2 | Pulmonary embolism | +1 |
PaCO2 | +2 | Hemoptysis | +1 |
<4.8 kPA (36 mm Hg) | +1 | Cancer | |
4.9–5.19 kPa (37–38.9 Hg) | +4 | ||
PaO2 | +3 | ||
<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 | ||
Atelectasis | 0–4 | ||
Elevated hemidiaphragm | 5–8 | ||
Clinical probability | ≥9 | Clinical probability | 0–1 |
Low | Low | 2–6 | |
Intermediate | Intermediate | ≥7 | |
High | High |