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Frontal cerebral vulnerability and executive deficits from raised intracranial pressure in child traumatic brain

Helen Slawik1, Claire H Salmond, Joana V Taylor-Tavares

  • 1Department of Paediatrics, School of Clinical Medicine, University of Cambridge, Cambridge, United Kingdom.

Journal of Neurotrauma
|November 26, 2009
PubMed

Insights

Severe pediatric traumatic brain injury (TBI) with increased intracranial pressure (ICP) is linked to long-term executive function deficits and brain tissue loss. These findings highlight the impact of ICP on cognitive outcomes in children. Keywords: pediatric TBI, intracranial pressure, executive function, brain injury.

Area of Science:

  • Neuroscience
  • Pediatric Neurology
  • Trauma Surgery

Background:

  • Severe pediatric traumatic brain injury (TBI) often involves elevated intracranial pressure (ICP), a critical factor influencing patient outcomes.
  • The long-term neurological consequences of raised ICP in pediatric TBI, particularly concerning prefrontal executive functions and associated brain structural changes, require further investigation.

Purpose of the Study:

  • To investigate the association between raised intracranial pressure (ICP) in severe pediatric TBI and subsequent prefrontal executive deficits.
  • To determine if raised ICP correlates with regional brain tissue loss, potentially indicating an anterior vascular compartment syndrome.

Main Methods:

  • Thirty-three pediatric TBI patients were categorized into groups based on the presence or absence of elevated ICP during critical illness.
  • Follow-up assessments included magnetic resonance imaging (MRI) for brain tissue analysis and neuropsychological testing focusing on prefrontal executive functions (average follow-up: 3.9 years).
  • Voxel-based morphometry (VBM) was utilized to analyze regional gray and white matter differences between groups.

Main Results:

  • The elevated ICP group exhibited diffuse white matter loss (corpus callosum, periventricular, frontal regions) and regional gray matter loss (caudate nuclei, frontal regions).
  • Despite normal IQs, the ICP group demonstrated persistent deficits in attention, working memory, decision-making, and impulsivity.
  • Findings suggest raised ICP contributes to diffuse brain injury and potential hypoperfusion within the anterior cerebral artery distribution.

Conclusions:

  • Elevated intracranial pressure in severe pediatric TBI is associated with significant long-term prefrontal executive dysfunction and structural brain abnormalities.
  • The observed patterns of brain tissue loss suggest a link between raised ICP and compromised anterior cerebral artery circulation.
  • Voxel-based morphometry and executive function assessments are valuable tools for detecting ICP-related brain injury and should be considered in future clinical trials evaluating ICP-directed therapies.

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