Growth of adolescents who were born at extremely low birth weight without major disability

Academic Article

Abstract

  • Objective: To compare growth between adolescents who were born at extremely low birth weight (ELBW, ≤1000 g) and adolescents who were born at normal birth weight (NBW, ≥2500 g). Design/Methods: Cross-sectional design. Fifty-three ELBW and 53 NBW adolescents without a major neurodevelopmental disability were matched by sex, race, age, and socioeconomic status. Anthropometrics (z scores), bone age, body composition (Lunar DPX-L densitometry), and sexual maturity were assessed. ELBW adolescents were classified as being born small for gestational age (SGA) or not (NSGA). Results: Subjects were 58.5% female, 43.4% black, and 56.6% white. The mean birth weight for ELBW subjects was 849 g and 3355 g for NBW subjects. The mean age was 14.85 years. On average, ELBW adolescents were 4.8 cm shorter and 9.1 kg lighter than NBW adolescents. ELBW adolescents had lower mean z scores for height (P < .0001), weight (P < .0001), and head circumference (P < .0001) than NBW adolescents, ELBW/SGA subjects had lower mean z scores for height (P < .0001)and weight (P = .001) than NBW subjects. Head circumference z scores were lower for the ELBW/SGA group than the ELBW/NSGA group or the NBW group (P = .003). Sexual maturity and relative body composition were similar between groups. Bone age, measured in SD units, was more advanced in the ELBW group (0.86 vs. 0.42, P = .039). Conclusions: ELBW adolescents who survive without a major neurodevelopmental disability attain lower growth measurements compared with NBW adolescents but have similar sexual maturation and relative body composition.
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    Author List

  • Peralta-Carcelen M; Jackson DAS; Goran MI; Royal SA; Mayo MS; Nelson KG
  • Start Page

  • 633
  • End Page

  • 640
  • Volume

  • 136
  • Issue

  • 5