Management of Pediatric Head Trauma with Post-Traumatic Vomiting
This clinically stable 5-year-old with witnessed fall, no loss of consciousness, and two episodes of vomiting should be observed for at least 4-6 hours in a medical facility, with consideration for CT imaging if vomiting persists or neurological status changes, and can be discharged home with detailed head injury instructions if examination remains normal and vomiting resolves 1.
Risk Stratification
The presence of vomiting after head trauma in children requires careful evaluation but does not automatically indicate severe injury. Key factors to assess include:
- Timing of vomiting relative to meals: Vomiting is significantly more common when injury occurs within 1 hour of eating (p<0.001), and typically resolves within 3 hours in these cases 2
- Age consideration: Post-traumatic vomiting is more common in children over 2 years old (p<0.001) 2
- Vomiting pattern: Two episodes over 4 hours in an otherwise stable child falls into a moderate-risk category
Importantly, vomiting alone does not correlate with positive CT findings or significant sequelae when neurological examination remains normal 3.
Observation Protocol
Since this child is clinically stable with normal neurological examination:
- Continue observation for a minimum of 4-6 hours total from injury
- Monitor for red flag symptoms that would mandate CT imaging:
The CDC guideline on pediatric mild traumatic brain injury emphasizes standardized assessment and monitoring for children with GCS 13-15 1.
Imaging Decision
CT imaging is NOT immediately indicated in this scenario given:
- Normal neurological examination
- No loss of consciousness
- Clinically stable vital signs
- Only 2 episodes of vomiting
However, obtain CT scan if:
- Vomiting continues beyond 4-6 hours
- Any neurological deterioration occurs
- GCS drops below 13
- New concerning symptoms develop 4, 5
Research shows that vomiting occurring more than 1 hour after a meal tends to be more protracted (mean 7.5 hours) and these children benefit from hospital admission 2.
Discharge Criteria vs. Admission
Discharge home is appropriate if:
- Vomiting has resolved or is clearly improving
- Neurological examination remains completely normal
- Observation period of 4-6 hours completed
- Reliable caregivers present who can monitor at home
- Clear head injury instructions provided 4, 3
Admit to hospital if:
- Vomiting persists beyond 6 hours
- Injury occurred >1 hour after last meal (higher risk of protracted vomiting) 2
- Any uncertainty about home monitoring capability
- Development of any red flag symptoms
Critical Pitfalls to Avoid
Do not dismiss persistent vomiting: While vomiting alone doesn't predict intracranial injury in neurologically normal children, recurrent vomiting (>2-3 episodes) is an indicator for hospital transfer and closer monitoring 4.
Do not rely on skull X-rays: These are useless for judging injury severity or formulating prognosis 3. CT is the only imaging modality that resolves diagnostic doubt when indicated.
Do not discharge without detailed instructions: Parents must understand warning signs requiring immediate return: altered consciousness, severe headache, repeated vomiting, seizures, weakness, vision changes, or unusual behavior 4, 5.
Post-Discharge Management
Provide written head injury instructions covering: