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Calculators /
PERC Rule for Pulmonary Embolism

Risk stratification tool that rules out PE in situations where the clinical pretest probability is low (<= 15%) and no criteria are present. 
Age 50+
HR 100+
Oxygen Saturation <95 %
Unilateral leg swelling?
Hemoptysis
Recent Surgery or Trauma
Within last 4 weeks ago requiring treatment with general anesthesia
Hx of Past DVT or PE
Hormone usage
  • Oral contraceptives
  • Hormone replacement
  • Estrogenic hormones use in males or female patients
Result : 0
Based on my clinical assessment, this patient has a low pre-test probability of PE (<15%), and based on the PERC Rule criteria no further workup of PE is indicated. 
Although this patient has a low pre-test probability of PE (<15%), the diagnosis of PE cannot be ruled out based on PERC Rule criteria. 
Although this patient has a low pre-test probability of PE (<15%), the diagnosis of PE cannot be ruled out based on PERC Rule criteria. 
Although this patient has a low pre-test probability of PE (<15%), the diagnosis of PE cannot be ruled out based on PERC Rule criteria. 
Although this patient has a low pre-test probability of PE (<15%), the diagnosis of PE cannot be ruled out based on PERC Rule criteria. 
Although this patient has a low pre-test probability of PE (<15%), the diagnosis of PE cannot be ruled out based on PERC Rule criteria. 
Although this patient has a low pre-test probability of PE (<15%), the diagnosis of PE cannot be ruled out based on PERC Rule criteria. 
Although this patient has a low pre-test probability of PE (<15%), the diagnosis of PE cannot be ruled out based on PERC Rule criteria. 
Although this patient has a low pre-test probability of PE (<15%), the diagnosis of PE cannot be ruled out based on PERC Rule criteria. 
Result : 0
Based on my clinical assessment, this patient has a low pre-test probability of PE (<15%), and based on the PERC Rule criteria no further workup of PE is indicated. 
Although this patient has a low pre-test probability of PE (<15%), the diagnosis of PE cannot be ruled out based on PERC Rule criteria. 
Although this patient has a low pre-test probability of PE (<15%), the diagnosis of PE cannot be ruled out based on PERC Rule criteria. 
Although this patient has a low pre-test probability of PE (<15%), the diagnosis of PE cannot be ruled out based on PERC Rule criteria. 
Although this patient has a low pre-test probability of PE (<15%), the diagnosis of PE cannot be ruled out based on PERC Rule criteria. 
Although this patient has a low pre-test probability of PE (<15%), the diagnosis of PE cannot be ruled out based on PERC Rule criteria. 
Although this patient has a low pre-test probability of PE (<15%), the diagnosis of PE cannot be ruled out based on PERC Rule criteria. 
Although this patient has a low pre-test probability of PE (<15%), the diagnosis of PE cannot be ruled out based on PERC Rule criteria. 
Although this patient has a low pre-test probability of PE (<15%), the diagnosis of PE cannot be ruled out based on PERC Rule criteria. 
About
Risk stratification tool that rules out PE in situations where the clinical pretest probability is low (<= 15%) and no criteria are present.