Info
clinical prediction rules for the diagnosis of pulmonary embolism
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PERC
- Patient characteristic
- Unilateral leg swelling
- Heart rate >99/min
- Immobilization or surgery in the previous 4 wk
- Previous DVT or PE
- Hemoptysis
- Age >49 y
- Oxygen saturation by pulse oximetry on room air <95%
- Estrogen use
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Wells
- Patient characteristic: Clinically suspected DVT
- Unilateral leg swelling
- Heart rate >100/min
- Immobilization or surgery within the previous 4 wk
- Previous DVT or PE
- Hemoptysis
- Cancer within 6 mo
- Alternative diagnosis is less likely than pulmonary embolism
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Revised Geneva
- Unilateral lower limb pain
- Pain on lower limb palpation and unilateral edema
- Heart rate 75-94/min
- Heart rate >94/min
- Surgery or lower limb fracture within the previous 4 wk
- Previous DVT or PE
- Hemoptysis
- Cancer within 12 mo
- Age >65 y
- Score: variable points for each criteria, ranging from 1 to 5