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New definition of small for gestational age based on fetal growth potential

J Gardosi1

  • 1West Midlands Perinatal Institute, Birmingham, UK. Jason.Gardosi@perinatal.nhs.uk

Hormone Research
|April 14, 2006
PubMed

Insights

Accurate definition of small for gestational age (SGA) is crucial for infant care. Customized growth charts identify pathologically small babies, distinguishing them from constitutionally small infants, thus improving antenatal and postnatal care.

Area of Science:

  • Perinatal Medicine
  • Neonatology
  • Fetal Development

Background:

  • Accurate definition of small for gestational age (SGA) is critical for appropriate antenatal and postnatal care.
  • SGA is linked to significant antenatal and postnatal pathologies.
  • Current definitions may not adequately distinguish between pathological smallness and constitutional smallness.

Purpose of the Study:

  • To emphasize the importance of accurate SGA definition for clinical practice.
  • To highlight the need to adjust for physiological variations in birth weight.
  • To introduce customized fetal growth curves and birth weight percentiles for identifying true intrauterine growth restriction.

Main Methods:

  • Adjusting for maternal height, weight, parity, ethnic origin, and baby's gender.
  • Utilizing individually customized fetal growth curves and birth weight percentiles.
  • Validating the customized growth method through international studies.

Main Results:

  • Customized SGA accurately defines neonates with intrauterine growth restriction.
  • 'Small-normal' infants, identified by this method, do not represent increased risk.
  • The customized approach allows for calculation of true growth potential.

Conclusions:

  • Individualized standards are essential for accurate SGA assessment.
  • Customized SGA definition improves the identification of at-risk neonates.
  • Further development aims to expand international applicability and incorporate infant growth curves.

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