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

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.

2022年8月4日 · PERC（Passivated Emitter Rear Cell） ——发射极及背面钝化电池技术，与常规电池不同之处在于背面，PERC电池采用了钝化膜来钝 化背面，取代了传统的全铝背场，增强光线在硅基的内背反射，降低了背面的复合速率，从而使电池的效率提升0.5%-1%。 2020年，规模化生产的单/多晶电池平均转换效率分别达到22.7%和19.4%。 P型单晶电池均已采用PERC技术，平均转换效率同比提升 0.5个百分点。 由于P型单晶硅PERC电池理论转换效率极限为24.5%， …

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.

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 ...

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...

2013年7月15日 · This month's article demonstrates the validity of the Pulmonary Embolism Rule-Out Criteria (PERC; Table 1 1) and should reassure your decision to forgo CT in patients at very low risk of PE. Is...

The PERC (Pulmonary Embolism Rule-out Criteria) rule can be used in the initial evaluation for pulmonary embolism (PE) in low-risk patients to exclude the diagnosis of PE based on historical and physical examination data alone. A patient's low-risk risk status can be determined by either clinician judgement or by using Wells Criteria.

2014年3月10日 · However, your PE prevalence must be 7% or less (essentially a Wells < 2) before the PERC rule can be applied to patients presenting to ED with suspected PE in conjunction with clinical judgment to identify patients with a prevalence of PE that is below the 1.8% test threshold proposed by Kline.