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Dr KK Aggarwal 28 May 2018
PERC is a tool that rules out pulmonary embolism (PE) and is an alternate to sensitive D-dimer testing in patients with a low-probability assessment for PE. It is best used in patients who present to the emergency department (ED) with dyspnea or chest pain, in whom the gestalt estimate pre-test probability for PE is less than 15%. It is not meant for risk stratification.
The PERC rule has 8 criteria:
In patients with a low probability of PE who fulfill all the above 8 criteria, the likelihood of PE is low and no further testing is required.
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