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Pulmonary Embolism Rule-Out Criteria (PERC)

Procedure: - age >= 50 years - heart rate >= 100/minute - SaO2 < 95% on room air - hemoptysis - exogenous estrogen use - prior venous thromboembolism - trauma or surgery within the previous 4 weeks - unilateral lower extremity swelling Interpretation: - a score of zero rules out pulmonary embolism Management: - patients with a PERC score of zero do NOT need plasma D-dimer testing or imaging [1]

General

criteria numerical rating scale (NRS)

References

  1. Medical Knowledge Self Assessment Program (MKSAP) 18, American College of Physicians, Philadelphia 2018
  2. Kline JA, Courtney DM, Kabrhel C et al Prospective multicenter evaluation of the pulmonary embolism rule-out criteria. J Thromb Haemost. 2008 May;6(5):772-80. Epub 2008 Mar 3. PMID: 18318689 Free Article
  3. Pulmonary Embolism Rule-Out Criteria http://www.jwatch.org/sites/default/files/static/emergency-medicine/articles/JO2012121401.jpg