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Pathophysiology of Pediatric Traumatic Brain Injury
Rebecka O Serpa1,2, Lindsay Ferguson1,2, Cooper Larson1,2
1Department of Neurosurgery, Brain Injury Research Center, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA, United States.
Insights
Pediatric traumatic brain injury (TBI) is common, with unique age-related changes affecting recovery. Understanding these differences is key to improving outcomes for children and adolescents with TBI.
Area of Science:
- Pediatric neurology
- Neuroscience
- Traumatic Brain Injury research
Background:
- Traumatic brain injury (TBI) is a leading cause of injury in children, with over 697,000 emergency visits annually in the US.
- Pediatric TBI incidence shows peaks in toddlers and adolescents, suggesting age-specific factors.
- Brain maturation influences TBI pathophysiology and long-term outcomes, creating unique vulnerabilities.
Purpose of the Study:
- To review the acute pathophysiological processes of TBI during cerebral maturation.
- To examine the time course of outcomes following pediatric TBI, considering severity and repetition.
- To identify age-associated mechanisms and knowledge gaps in pediatric TBI research.
Main Methods:
- Literature review of preclinical and clinical studies on pediatric TBI.
- Analysis of age-related differences in acute TBI pathophysiology (calcium, glucose metabolism, blood flow).
- Examination of outcomes after mild, repeat mild, and severe TBI across different pediatric age groups.
Main Results:
- Cerebral maturation involves dynamic changes in calcium accumulation, glucose metabolism, and cerebral blood flow, impacting TBI response.
- Pediatric TBI outcomes are influenced by developmental plasticity and windows of vulnerability.
- Long-term outcomes vary significantly based on age at injury, injury severity, and repetition.
Conclusions:
- Understanding age-specific pathophysiological responses is crucial for pediatric TBI.
- Developmental trajectories are altered by TBI, highlighting critical windows of susceptibility.
- Further research is needed to address knowledge gaps and improve TBI management in children.
Abstract:
The national incidence of traumatic brain injury (TBI) exceeds that of any other disease in the pediatric population. In the United States the Centers for Disease Control and Prevention (CDC) reports 697,347 annual TBIs in children ages 0-19 that result in emergency room visits, hospitalization or deaths. There is a bimodal distribution within the pediatric TBI population, with peaks in both toddlers and adolescents. Preclinical TBI research provides evidence for age differences in acute pathophysiology that likely contribute to long-term outcome differences between age groups. This review will examine the timecourse of acute pathophysiological processes during cerebral maturation, including calcium accumulation, glucose metabolism and cerebral blood flow. Consequences of pediatric TBI are complicated by the ongoing maturational changes allowing for substantial plasticity and windows of vulnerabilities. This review will also examine the timecourse of later outcomes after mild, repeat mild and more severe TBI to establish developmental windows of susceptibility and altered maturational trajectories. Research progress for pediatric TBI is critically important to reveal age-associated mechanisms and to determine knowledge gaps for future studies.
