3-year-old minor head injury with vomiting, normal exam: CT or observe?

Summary

In a 3-year-old with minor blunt head trauma, normal mental status and neurologic exam, isolated vomiting places the child in an intermediate-risk PECARN category where either ED observation or CT is reasonable.2 Multiple PECARN secondary analyses and FOAM reviews report very low rates of clinically important traumatic brain injury (ciTBI) with isolated vomiting alone, supporting observation over immediate CT in many otherwise well-appearing children.1245 CT is recommended if high-risk features are present such as GCS ≤14, altered mental status, or signs of basilar skull fracture.23

At-a-glance

SituationSuggested approach
Isolated vomiting, normal neuro exam, GCS 15Observation rather than immediate CT should be considered.124
High-risk features present (GCS ≤14, AMS, skull fracture signs)Obtain head CT.23
≥2 PECARN medium-risk features or worsening during observationLower threshold for CT.3
Isolated vomiting riskciTBI about 0.2% in one PECARN analysis.24
Observation durationPECARN-based sources suggest 4–6 hours observation for intermediate-risk patients.2
Discharge after observationReasonable if asymptomatic/improving with normal neuro exam and mental status.2
PECARN Pediatric Head InjuryPediatrics

Guides CT versus observation decisions after pediatric blunt head trauma.

References

Powered by Cortex AI

We use advanced natural language processing to understand the nuance of complex medical queries, moving beyond keyword matching to true semantic understanding.

Semantic Search Real-time Indexing Mobile First
Query: "ED treatment exertional heat stroke"
Retrieving from: LITFL, EmCrit, IBCC...
Synthesized Clinical Answer