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Assessment and Evaluation of the High Risk Neonate: The NICU Network Neurobehavioral Scale
Published on: August 25, 2014
Premature infants with birth weights of 1500-1999 g exhibit considerable delays in several developmental areas
Camila C Guerra1, Marina C de Moraes Barros, Ana Lucia Goulart
1Neonatal Division, Department of Pediatrics, Federal University of São Paulo, São Paulo, SP, Brazil.
Insights
Premature infants born between 1500-1999g showed significant developmental delays, particularly in social and general adaptive domains. Factors like low income and caesarean delivery were linked to these delays, highlighting the impact of both biological and environmental influences.
Area of Science:
- Pediatric developmental neuroscience
- Neonatal developmental outcomes
Background:
- Premature infants face heightened risks for developmental delays.
- Understanding factors influencing developmental scores is crucial for early intervention.
Purpose of the Study:
- To determine the prevalence of developmental delays in premature infants (1500-1999g birth weight).
- To identify factors associated with developmental scores and delays in this population.
Main Methods:
- Cross-sectional study of 100 premature infants (18-24 months corrected age).
- Bayley Scales of Infant and Toddler Development, Third Edition (Bayley III) used for assessment.
- Analysis of factors associated with developmental scores and delays.
Main Results:
- High prevalence of delays observed in social (46.0%), general adaptive (26.0%), and conceptual (17.0%) domains.
- Factors linked to delays included caesarean delivery, low income, and peri-intraventricular hemorrhage.
- Reduced developmental scores associated with non-white ethnicity, lower social class, male gender, and longer hospitalization.
Conclusions:
- Premature infants within this birth weight range experience significant developmental delays.
- Both biological and environmental factors contribute to impaired developmental outcomes.
Aim:
To establish the prevalence and factors associated with developmental scores and delays in premature infants.
Methods:
A cross-sectional study was conducted on 100 premature infants with corrected ages of 18-24 months (actual ages 19.9 ± 2.0 months) and birth weights of 1500-1999 g. Bayley III scales were used to assess developmental scores, percentage of children with developmental scores <85, factors associated with developmental scores and delays in at least one developmental domain.
Results:
The percentages and 95% confidence intervals of those children with developmental delays were as follows: cognitive (2.0%; 0.6-7.0%), language (5.0%; 2.2-11.2%), motor (3.0%; 1.0-8.5%), socio-emotional (13.0%; 7.8-20.1%), general adaptive (26.0%; 18.4-35.4%), conceptual (17.0%; 10.9-25.6%), social (46.0%; 36.6-55.7%) and practical (21.0%; 14.2-30.0%). Factors associated with delay in at least one developmental domain were as follows: caesarean delivery, low per capita income and peri-intraventricular haemorrhage. Factors associated with a reduction in developmental scores were as follows: non-white ethnicity, lower social class, caesarean delivery, male gender, peri-intraventricular haemorrhage, mechanical ventilation and length of hospitalisation.
Conclusion:
Premature infants with birth weights of 1500-1999 g exhibited considerable delays in several developmental areas. In addition to biological factors, environmental factors contributed to the reduced scores and/or developmental delays.
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