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Survival and cerebral palsy in low birthweight infants: implications for perinatal care
1Western Australian Research Institute for Child Health, Perth.
Insights
Increased survival of low birthweight infants is linked to more cerebral palsy cases. While better neonatal care may prevent some cases, many infants likely suffer brain damage before birth, requiring further research.
Area of Science:
- Neurology
- Neonatalogy
- Pediatrics
Background:
- Rising survival rates of low and very low birthweight infants correlate with increased cerebral palsy diagnoses.
- Cerebral palsy affects approximately one-third of children born with low birthweight.
Purpose of the Study:
- To analyze the relationship between increased survival of low birthweight infants and the incidence of cerebral palsy.
- To investigate the timing of brain damage in low birthweight infants with cerebral palsy.
Main Methods:
- Analysis of data from the Western Australian Cerebral Palsy Register.
- Examination of data from the Maternal and Child Health Research Data Base, including stillbirths, neonatal deaths, and survivors.
Main Results:
- The analysis suggests that both antenatal and postnatal complications contribute to the rise in cerebral palsy among low birthweight infants.
- A portion of postnatally acquired brain damage in survivors may be preventable with improved neonatal care.
Conclusions:
- While some cerebral palsy cases in low birthweight infants may be preventable through enhanced neonatal care, a significant proportion likely results from antenatal factors, posing challenges for prevention.
- Urgent further research is needed on antenatal factors, preterm birth etiologies, neonatal interventions, and brain damage predictors in low birthweight infants with cerebral palsy.
Abstract:
Whilst only about a third of all cerebral palsy occurs in children who had been of low birthweight, recent increases in the survival of low and very low birthweight infants have coincided with significant increases in the numbers of cerebral palsy children amongst them. This paper analyses data from the Western Australian Cerebral Palsy Register and from the Maternal and Child Health Research Data Base for stillbirths, neonatal deaths and survivors to address the issues of increased survival, cerebral palsy and timing of brain damage. The analysis is inconclusive but suggestive that both antenatal and postnatal complications are important in the increases in cerebral palsy in low birthweight infants. The good news is that this means that a certain proportion of postnatally damaged low birthweight survivors could possibly be prevented by better neonatal care. The bad news is that the remaining proportion have probably received their damage well before delivery and the possibilities for prevention are still remote. Further studies of low birthweight infants with cerebral palsy are urgently required. They should include antenatal factors, investigating the various aetiological pathways to preterm birth, randomised controlled trials of neonatal interventions and searching for better neonatal predictors of brain damage.