Pulmonology Book

http://www.fpnotebook.com/

Pulmonary Embolism Rule-Out Criteria

Aka: Pulmonary Embolism Rule-Out Criteria, PERC Rule
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  1. Indications
    1. Evaluation of Pulmonary Embolism in patients clinically assessed as low risk
  2. Criteria: Assumes a low clinical suspicion for PE
    1. Age <50 years
    2. Heart Rate <100 bpm
    3. Oxygen Saturation >94%
    4. No unilateral Leg Swelling
    5. No Hemoptysis
    6. No surgery or trauma within 4 weeks
    7. No prior DVT or PE
    8. No hormone use
      1. Includes oral, transdermal and intravaginal Estrogens as well as some Progestins
  3. Interpretation
    1. Low clinical suspicion for PE and all criteria negative (see above)
      1. Reasonable to forego further testing for Pulmonary Embolism
  4. References
    1. Kline (2004) J Thromb Haemost 2(8): 1247-55

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