Pediatrics

PECARN Pediatric Head CT Rule Calculator

Pediatric head CT decision for minor trauma

Clinical use

Use this calculator for pediatric head ct decision for minor trauma in thepediatrics workflow. It is decision support and should be interpreted with the patient context, local protocols, and clinician judgment.

Interpretation

Algorithm-based (age <2 vs ≥2 years). ciTBI risk <0.02% if all criteria negative — CT not recommended. Reduces unnecessary paediatric head CTs by >25%.

Required inputs

Age Under 2
Gcs < Than 15
Altered Mental Status
Loss Of Consciousness
Severe Mechanism

Optional: Palpable Skull Fracture, Scalp Hematoma, Not Acting Normally, Basilar Skull Fracture Signs, Vomiting, Severe Headache

Evidence and limitations

This page cites 1 published reference. Confirm units and inclusion criteria before applying the output; calculators do not replace assessment, escalation, or local policy.

References

Kuppermann N et al. Lancet 2009;374:1160-1170

Frequently asked questions

What is the PECARN Pediatric Head CT Rule?

PECARN Pediatric Head CT Rule is a clinical calculator used for Pediatric head CT decision for minor trauma.

How do I interpret the PECARN Pediatric Head CT Rule?

Algorithm-based (age <2 vs ≥2 years). ciTBI risk <0.02% if all criteria negative — CT not recommended. Reduces unnecessary paediatric head CTs by >25%.

What inputs are required for the PECARN Pediatric Head CT Rule?

Required inputs include Age Under 2, Gcs < Than 15, Altered Mental Status, Loss Of Consciousness, Severe Mechanism. Optional inputs include Palpable Skull Fracture, Scalp Hematoma, Not Acting Normally, Basilar Skull Fracture Signs, Vomiting, Severe Headache.