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Pecarn Calculator

Result

Calculated result 0 Based on the values entered.
↗ Health

PECARN Head Injury Score PECARN pediatric head injury algorithm for low-risk classification. Determines if CT scan needed. Points: LOC/amnesia/GCS<15/severe mechanism = high risk. Educational; consult clinical guidelines. — free online calculator.

Formula

Score = LOC + Amnesia + GCS<15 + Severe Mechanism. Score=0 low risk
  • Pecarn Calculator calculates its result from Loss of consciousness, Amnesia, GCS <15, Severe mechanism. It uses the formula Score = LOC + Amnesia + GCS<15 + Severe Mechanism. Score=0 low risk. Change any input to recalculate the result instantly. This is an informational calculation and is not medical advice.
  • The main inputs are Loss of consciousness, Amnesia, GCS <15, Severe mechanism. Enter them in the units and format shown in the calculator.
  • Use the measurement units shown beside each field. The result is an estimate and should be interpreted in context.
  • Changing any input above recalculates the result with the same calculation engine used by this page.

Example: Pecarn

Inputs
  • Loss of consciousness: 0
  • Amnesia: 0
  • GCS <15: 0
  • Severe mechanism: 0

Using Loss of consciousness = 0, Amnesia = 0, GCS <15 = 0, Severe mechanism = 0, the calculated result is 0.

Sample result: Calculating…

Frequently asked questions

What does the Pecarn calculate?

PECARN Head Injury Score PECARN pediatric head injury algorithm for low-risk classification. Determines if CT scan needed. Points: LOC/amnesia/GCS<15/severe mechanism = high risk. Educational; consult clinical guidelines. — free online calculator.

Which values should I enter?

Enter Loss of consciousness, Amnesia, GCS <15, Severe mechanism using the units and format shown beside each field.

What formula does this calculator use?

The calculator uses the following relationship: Score = LOC + Amnesia + GCS<15 + Severe Mechanism. Score=0 low risk.

Why might my result differ from another source?

Results can differ because measurement methods, rounding and assumptions vary. This calculator is an estimate and is not a medical diagnosis.

Does the result update automatically?

Yes. Changing an input updates the result using the same calculation engine shown on this page.

Page information

Updated: October 7, 2026