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Modeling Encephalopathy of Prematurity Using Prenatal Hypoxia-ischemia with Intra-amniotic Lipopolysaccharide in Rats
Published on: November 20, 2015
Neurological outcomes following preterm birth
1School of Human Development, University of Nottingham, Nottingham, UK. joe.fawke@nottingham.ac.uk
Insights
Neonatal survival is improving, with declining rates of cerebral palsy in most infants. However, subtle motor issues and neurodevelopmental challenges persist, impacting school performance.
Area of Science:
- Neonatal neurology
- Pediatric neurodevelopment
- Developmental disabilities
Background:
- Neonatal survival rates have improved, raising concerns about associated neurodevelopmental morbidity.
- Historically, neuromotor impairments like cerebral palsy were thought to increase with improved survival.
- Recent data indicate a potential decline in cerebral palsy rates, except for extremely premature infants.
Purpose of the Study:
- To review current evidence on neurodevelopmental outcomes in neonates.
- To highlight the evolving understanding of neuromotor morbidity and its impact.
- To discuss advancements in outcome measurement and neuro-imaging for neonatal brain injury.
Main Methods:
- Review of recent evidence on neuromotor and neurosensory impairments in neonates.
- Discussion of validated motor and manual function classification systems for cerebral palsy.
- Exploration of advanced neuro-imaging techniques like volumetric MRI.
Main Results:
- Neuromotor morbidity, specifically cerebral palsy, may be decreasing for most neonates.
- Severe sensory impairments remain static, while mild motor problems are increasingly recognized.
- These motor issues correlate with developmental coordination disorder, executive dysfunction, and reduced school performance.
Conclusions:
- While severe impairments are stable, subtle motor deficits and associated neurodevelopmental issues require attention.
- Standardized classification systems and advanced neuro-imaging are crucial for understanding neonatal brain injury and developmental trajectories.
- Further research into composite motor assessments and longitudinal studies is needed.
Abstract:
Neonatal survival continues to improve; for many years, including throughout the 1990s there have been anxieties that this was at the cost of additional morbidity, most particularly in terms of neurosensory impairments. Recent evidence suggests that rates of neuromotor morbidity, in particular cerebral palsy, may be declining for all but the most immature babies. Severe sensory impairment has a low, but relatively static incidence. High prevalence, low severity motor problems and their inter-relationship with developmental co-ordination disorder, executive dysfunction and cognitive impairment are increasingly recognised and correlated with reduced school performance. Because of difficulties in comparing outcomes across different populations, validated motor and manual function classifications have been developed for children with cerebral palsy and can help to standardise outcome measures. Improved neuro-imaging is helping us understand the types and consequences of neonatal brain injury. The possibility of using composite measures of early motor movement quality, longitudinal use of motor classification systems and volumetric magnetic resonance imaging (MRI) imaging to understand developmental processes needs to be explored.
