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Early predictors of neurodevelopmental outcome of very low-birthweight infants at three years
Insights
Neurodevelopmental assessments at 9 and 12 months accurately predict outcomes for premature infants. These evaluations help identify infants needing early intervention, improving long-term developmental trajectories.
Area of Science:
- Pediatrics
- Neurodevelopmental Pediatrics
- Neonatology
Background:
- Premature infants (<1501g) require ongoing neurodevelopmental monitoring.
- Predicting long-term outcomes in high-risk infants is crucial for timely intervention.
Purpose of the Study:
- To evaluate the predictive accuracy of neurodevelopmental examinations in premature infants.
- To determine the optimal timing for neurodevelopmental assessments to predict later outcomes.
Main Methods:
- Seventy-nine premature infants underwent serial neurodevelopmental examinations from 1 to 12 months post-term.
- Standard neurological examinations and Stanford-Binet Intelligence Scale were administered at 3-4 years.
- Infants were classified based on neurological status, IQ, and composite neurodevelopmental outcome.
Main Results:
- Nine- and 12-month neurodevelopmental exams correctly classified ~80% of infants for 3-year composite outcome.
- The 12-month exam predicted neurological outcome with 89% accuracy and IQ with 82% accuracy.
- Late-infancy neurodevelopmental assessments demonstrate significant predictive value.
Conclusions:
- Neurodevelopmental examinations in the latter half of the first year are valuable for predicting outcomes in high-risk infants.
- These assessments can guide pediatricians in identifying infants who will benefit from early intervention.
- Early and accurate prediction facilitates proactive management of neurodevelopmental challenges in premature infants.
Abstract:
Seventy-nine premature infants weighting less than 1501 g at birth but appropriate for gestational age underwent a neurodevelopmental examination at one, three, six, nine and 12 months post-term, and a standard neurological examination and the Stanford-Binet Intelligence Scale at three to four years of age. Children were classified as normal, suspect or abnormal on the three-year neurological examination, on the IQ test, and on composite neurodevelopmental outcome at age three years. Results showed that items from both the nine- and 12-month neurodevelopmental examinations correctly classified about 80 per cent of the children as to composite outcome at three years. In addition, the 12-month examination enabled correct prediction for 89 per cent of the children as to neurological outcome and for 82 per cent as to IQ. Neurodevelopmental examination of high-risk infants in the last quarter of the first year of life (post-term) should assist pediatricians in predicting which children will be normal and which will require early intervention.