Abstract| Volume 54, ISSUE 5, P742, May 2018

Effect of the Pulmonary Embolism Rule-out Criteria on Subsequent Thromboembolic Events Among Low-Risk Emergency Department Patients

Freund Y, Cachando M, Aubry A, et al. JAMA 2018;319(6):599-566
      The diagnosis of pulmonary embolism (PE) remains a challenge in the emergency department (ED) with computed tomographic pulmonary angiography (CTPA) being the test of choice to confirm the diagnosis. The pulmonary embolism rule-out criteria (PERC) clinical decision-making tool is often applied to patients in the ED to exclude low risk patients from over-testing with CTPA. Observational studies of the PERC have demonstrated it is safe but there has never been a prospective trial to validate its safety in ruling out PE.
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