Medical calculators
PERC Rule
PE Rule-Out
For education. Check every result.
Anatium is a study resource, not medical advice. Nothing here is a diagnosis, a prescription or a substitute for a clinician who has seen the patient. Check every number against a current local protocol before it touches anyone, and never act on a result you cannot reproduce yourself.
How it is calculated
PERC only applies when clinical suspicion is already low - it is a rule-out tool, not a risk score. Applying it to a moderate or high-risk patient is a misuse, and a single positive criterion invalidates it.
About
Rules out pulmonary embolism without any testing, but only in patients whose risk is already low. Applying it to a moderate-risk patient is a misuse.
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