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Renal function in SFD and AFD preterm babies

A Narang1, O N Bhakoo, S Majumdar

  • 1Department of Pediatrics (Neonatology), Post-graduate Institute of Medical Education and Research, Chandigarh.

Indian Pediatrics
|February 1, 1993
PubMed
Summary
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Neonatal glomerular function matures over 14 days. Small for dates preterm infants show slower renal maturation compared to appropriate for dates preterm infants, indicated by lower creatinine clearance.

Area of Science:

  • Neonatal physiology
  • Pediatric nephrology
  • Developmental biology

Background:

  • Neonatal kidney function is crucial for homeostasis.
  • Glomerular filtration rate (GFR) maturation varies among preterm infants.
  • Infants born small for gestational age (SGA) may have altered developmental trajectories.

Purpose of the Study:

  • To assess the maturation of glomerular function in preterm infants.
  • To compare renal function maturation between preterm small for dates (SFD) infants and preterm appropriate for dates (AFD) infants.
  • To evaluate serum creatinine and creatinine clearance as markers of renal maturation.

Main Methods:

  • Longitudinal study design assessing 15 preterm SFD infants (Group I) and 15 preterm AFD infants (Group II).

Related Experiment Videos

  • Measurements of serum creatinine and creatinine clearance were taken on the 3rd, 7th, and 14th postnatal days.
  • Statistical analysis to compare renal function parameters between the two groups.

    • Main Results:

    • Both groups showed a statistically significant increase in renal function from day 3 to day 14 (p < 0.001).
    • Serum creatinine levels were comparable between Group I and Group II at identical postnatal ages.
    • Creatinine clearance was significantly lower in Group I (SFD infants) compared to Group II (AFD infants) on days 3, 7, and 14 (p < 0.05, p < 0.001, and p < 0.01, respectively).

    Conclusions:

    • Preterm infants demonstrate progressive renal maturation within the first two weeks of life.
    • Small for dates preterm infants exhibit delayed renal maturation compared to appropriate for dates preterm infants.
    • Creatinine clearance is a sensitive indicator of impaired renal maturation in SFD preterm neonates.