Info

clinical prediction rules for the diagnosis of pulmonary embolism

  • 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
  • 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
  • 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