The Relationship Between Clinical Imaging and Neurobehavioral Assessment in Posthemorrhagic Ventricular Dilation of

Rebecca A Dorner1,2, Bruno P Soares2,3, Shenandoah Robinson2,4

  • 1Neonatology, Johns Hopkins Hospital, Baltimore, MD, United States.

Frontiers in Physiology
|February 27, 2019
PubMed

Insights

Neonatal intraventricular hemorrhage (IVH) and hydrocephalus in preterm infants are linked to neurodevelopmental issues. Neuroimaging and the NICU Network Neurobehavioral Scale (NNNS) show correlations between ventricle size, brain injury, and infant neurobehavioral deficits.

Area of Science:

  • Neonatal neurology
  • Pediatric neurosurgery
  • Developmental neuroscience

Background:

  • Neonatal intraventricular hemorrhage (IVH) and posthemorrhagic hydrocephalus in preterm infants can lead to significant brain injury and neurodevelopmental impairments.
  • Neuroimaging techniques like head ultrasound (HUS) and magnetic resonance imaging (MRI) are crucial for assessing cerebral injury and guiding interventions.
  • The NICU Network Neurobehavioral Scale (NNNS) offers a reliable method to evaluate motor and cognitive development in neonates.

Purpose of the Study:

  • To investigate the relationship between neonatal neurobehavioral outcomes measured by the NNNS and imaging parameters of ventricular dilation and brain injury on HUS and MRI.
  • To determine if neuroimaging findings correlate with neurobehavioral assessments in preterm infants with IVH and hydrocephalus.

Main Methods:

  • Enrollment of preterm neonates diagnosed with IVH and ventricular dilatation, with or without posthemorrhagic hydrocephalus.
  • Performance of NNNS exams at approximately term-equivalent age.
  • Measurement of HUS indices and assessment of the posterior fossa via MRI at term; correlation analysis using Pearson's method.

Main Results:

  • Significant correlations were found between ventricle size, brain injury markers, and NNNS scores.
  • Higher ventricle/brain ratios and poorer NNNS habituation scores were observed in infants requiring neurosurgical intervention.
  • Ventricle size showed modest correlations with motor abnormalities (e.g., reflexes, tone) and cognitive scores (e.g., attention); periventricular hemorrhagic infarction correlated with poorer habituation.

Conclusions:

  • Neurosurgical intervention for posthemorrhagic hydrocephalus in preterm infants is associated with greater ventriculomegaly and poorer NNNS outcomes.
  • HUS and MRI findings correlate with motor and cognitive deficits identified through neonatal neurobehavioral examinations.
  • The NNNS exam provides valuable supplementary information for assessing preterm infants with IVH-related ventricular dilation and hydrocephalus.

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