The PERC Rule for Pulmonary Embolism Rules out PE if no criteria are present and pre-test probability is ≤15%.

Objectives: The pulmonary embolism rule-out criteria (PERC rule) is a nine-component decision rule derived to exclude pulmonary embolism (PE) without the use of formal diagnostic testing (D-dimer, computed tomography pulmonary angiography, ventilation-perfusion lung scanning, or venous ultrasonography) when all nine components are negative ...

Does use of the pulmonary embolism rule-out criteria (PERC) in emergency department patients with low clinical probability of pulmonary embolism (PE) safely exclude the diagnosis of PE? In this cluster-randomized crossover noninferiority trial that ...

To determine the diagnostic performance of pulmonary embolism rule-out criteria (PERC), to rule out pulmonary embolism, without the need for D-dimer testing, in the emergency department.

The PERC rule achieved an NPV of 73.2% (95% CI 26.0 - 95.5%) for diagnosis of PE, with an area under the ROC curve of 0.520 (95% CI 0.388-0.653) . DISCUSSION. PE is a common entity that has a significant impact on patient morbidity, mortality, and prognosis.

In people with suspected pulmonary embolism (PE), what is the diagnostic accuracy of the pulmonary embolism rule-out criteria (PERC)? The pulmonary embolism rule-out criteria (PERC) are a set of clinical criteria that have been designed to allow people with a low probability of pulmonary embolism (PE) to be discharged without further testing.

In patients with a low probability of PE who fullfil all eight criteria, the likelihood of PE is low and no further testing is required. All other patients should be considered for further testing with sensitive D-dimer or imaging.

2018年8月15日 · The PERC decision rule is an eight-item set of clinical criteria, including arterial oxygen saturation of 94% or less, pulse rate of at least 100 beats per minute, patient age at least 50 years...

PERC Rule Calculator. Check all of the following that are true: Age <50yr; Pulse ox >94% (room air) HR <100; No prior PE or DVT; No recent surgery or trauma (within prior 4wk) No hemoptysis; No estrogen use; No unilateral leg swelling

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