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Published on: November 20, 2015
Early developmental outcomes after newborn encephalopathy
Glenys Dixon1, Nadia Badawi, Jennifer J Kurinczuk
1Centre for Child Health Research, University of Western Australia, Telethon Institute for Child Health Research, West Perth, Western Australia, Australia. glenysd@ichr.uwa.edu.au
Insights
Newborn encephalopathy significantly increases a child's risk for developmental delay and cerebral palsy by age two. Early assessments are crucial for identifying developmental status and planning educational support.
Area of Science:
- Neonatal Neurology
- Developmental Pediatrics
- Public Health
Background:
- Newborn encephalopathy is a serious condition affecting term infants.
- Understanding the long-term developmental outcomes is critical for affected children.
Purpose of the Study:
- To assess the early developmental status of children with a history of newborn encephalopathy.
- To identify prognostic factors for poor outcomes in this population.
Main Methods:
- A longitudinal, population-based case-control study in Western Australia.
- Included 276 term infants with moderate/severe newborn encephalopathy and 564 controls.
- Utilized Griffiths Mental Development Scales for developmental assessment.
Main Results:
- 39% of infants with newborn encephalopathy experienced poor outcomes (death, cerebral palsy, developmental delay) versus 2.7% of controls.
- Severe encephalopathy was associated with a 62% poor outcome rate.
- 10.1% of patients developed cerebral palsy; seizures increased this risk.
Conclusions:
- Newborn encephalopathy poses a significant risk for developmental delay by age two.
- Prognostic data highlight the need for comprehensive clinical and educational assessments.
- Early identification and support are vital for children affected by newborn encephalopathy.
Objective:
The aim of this study was to ascertain the early developmental status of children who have a history of newborn encephalopathy.
Methods:
A longitudinal follow-up was conducted of a population-based, case-control study of children born in Western Australia between June 1993 and December 1996. The study included 276 term children (>/=37 weeks' gestation) with moderate or severe newborn encephalopathy and 564 unmatched term control subjects. The Griffiths Mental Development Scales was used to ascertain developmental status and a General Quotient (GQ) score. Outcome measures were the Griffiths developmental subscales, GQ, diagnosis of cerebral palsy, and mortality.
Results:
Thirty-four patients and 1 control subject died before reaching assessment. Between June 1994 and December 1999, 195 (81%) eligible patients and 445 (79%) eligible control subjects were assessed. Statistically significant differences were found between patients and control subjects for GQ and all developmental subscales. Overall, 39% of patients had a poor outcome as defined by death, cerebral palsy, or a significant degree of developmental delay, compared with 2.7% of control subjects. Furthermore, 62% of those with severe encephalopathy had a poor outcome compared with 25% of those with moderate encephalopathy. Patients with a history of seizures were 3 times more likely to develop cerebral palsy than patients without. Overall, 28 (10.1%) of patients have cerebral palsy.
Conclusions:
These data provide important prognostic information regarding survival and serious disability and indicate that newborn encephalopathy places children at significant risk of developmental delay by their second year. These findings also suggest that comprehensive clinical and educational assessments are required to enable appropriate educational provisions as these infants approach school entry.
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