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Analysis of longitudinal follow-up data of physical growth in singleton full-term small for gestational age infants

Yan Zhao1, Xin Fan1, Jing Wen1

  • 1Department of Child Health Care, Chongqing Health Center for Women and Children, Chongqing, China.

The Journal of International Medical Research
|December 2, 2021
PubMed

Insights

Full-term infants small for gestational age (SGA) experience rapid early growth, particularly in the first three months. However, catch-up growth in weight and length is not consistently balanced during their first year.

Area of Science:

  • Pediatrics
  • Neonatology
  • Growth and Development

Background:

  • Small for gestational age (SGA) infants are at risk for growth deficiencies.
  • Understanding catch-up growth patterns is crucial for monitoring SGA infant development.

Purpose of the Study:

  • To investigate the catch-up growth trajectory of singleton, full-term infants identified as small for gestational age (SGA).
  • To analyze growth patterns in weight, length, and head circumference during the first year of life.

Main Methods:

  • Retrospective cohort study of 210 singleton, full-term SGA infants.
  • Measurements of weight, length, and head circumference at birth and at 1, 3, 6, and 12 months of age.

Main Results:

  • SGA infants demonstrated growth across all measured parameters, with the most rapid increase observed between birth and 3 months.
  • Catch-up growth in weight and head circumference outpaced that of body length.
  • By 12 months, boys' height showed significant correlation with parental height, while girls' height correlated with maternal and parental height.

Conclusions:

  • Full-term SGA infants exhibit accelerated postnatal growth, peaking in the first trimester.
  • Discrepancies in catch-up growth rates for weight and body length were noted.
  • Parental height is a significant factor in the final height of SGA children at one year.
Abstract

Keywords:
Full-term infantZ scorebirth weightcatch-up growthhead circumferencesingletonsmall for gestational age

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