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[Intrauterine growth in Chilean middle class newborn infants]
Insights
This study presents birth weight percentiles for 11,543 newborns, establishing a reference for intrauterine growth in Chilean infants. These detailed charts aid in evaluating fetal growth and identifying potential deviations from the norm.
Area of Science:
- Pediatric Endocrinology
- Perinatal Medicine
- Human Growth and Development
Context:
- Establishing accurate intrauterine growth charts is crucial for monitoring fetal development and identifying growth abnormalities.
- Existing international growth references may not accurately reflect the specific growth patterns of diverse populations.
- This study addresses the need for a localized growth reference for Chilean newborns.
Purpose:
- To establish comprehensive birth weight percentiles (10th, 25th, 50th, 75th, 90th) for newborns based on gestational age.
- To provide a reliable reference standard for evaluating intrauterine growth in the Chilean population.
- To facilitate the identification of appropriate-for-gestational-age and small-for-gestational-age infants within Chile.
Summary:
- Data from 11,543 liveborn infants, born between 1978-1987 and meeting specific inclusion criteria (absence of intrauterine growth retardation risk), were analyzed.
- Mean birth weight (MBW) and standard weight percentiles were calculated for gestational ages ranging from 26 to 42 weeks.
- The resulting intrauterine growth pattern is presented as a representative standard for Chilean newborns.
Impact:
- Provides a crucial, population-specific reference for healthcare providers in Chile to assess newborn growth accurately.
- Enables earlier and more precise detection of intrauterine growth deviations, potentially improving neonatal outcomes.
- Contributes to the understanding of regional variations in human fetal growth patterns.
Abstract:
Intrauterine growth of 11,543 newborn infants, liveborn between 1978 to 1987 that met prospective selection conditions (without intrauterine growth retardation risk) and their data are reported. MBW and weight percentiles 10, 25, 50, 75, 90 from 26 throughout 42 week of gestational age are reported. Selection of cases was important in obtaining adequate percentiles of birth-weight vs gestational age. The intrauterine growth pattern herein reported is recommended for evaluation of chilean newborns, because it is different to that of some foreign countries and the studied sample seems representative of chilean babies.