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Updated: Aug 8, 2026
13:13
Biochemical Measurement of Neonatal Hypoxia
Published on: August 24, 2011
Metabolic adaptation in small for gestational age infants
1Department of Child Health, University of Newcastle upon Tyne.
Archives of Disease in Childhood
|March 1, 1993
Summary
Infants small for gestational age (SGA) show early metabolic differences but current management may prevent hypoglycemia. SGA infants struggle with ketogenic responses, highlighting a critical area for clinical attention.
Area of Science:
- Neonatal Metabolism
- Pediatric Endocrinology
- Infant Health
Background:
- Hypoglycemia is a known complication in infants small for gestational age (SGA), indicating metabolic adaptation failure.
- Understanding metabolic adaptation in SGA infants is crucial for preventing adverse outcomes.
Purpose of the Study:
- To longitudinally examine metabolic fuel and substrate concentrations in SGA infants during the first postnatal week.
- To compare metabolic adaptation processes between SGA and appropriate for gestational age (AGA) infants.
Main Methods:
- Longitudinal measurement of metabolic fuels and substrates in 33 SGA infants.
- Cross-sectional data analysis of 218 AGA infants for comparison.
- Multiple regression analysis to identify factors influencing metabolic abnormalities.
Main Results:
- SGA term infants exhibited higher blood lactate levels and failed to mount a ketogenic response compared to AGA infants.
- SGA preterm infants had lower initial blood glucose but similar postnatal metabolic profiles to AGA preterm infants.
- Growth retardation severity correlated with the extent of metabolic abnormalities in SGA infants.
Conclusions:
- Early metabolic differences exist between SGA and AGA infants, particularly in lactate and ketone body levels.
- Current clinical management appears effective in preventing hypoglycemia in SGA infants despite their impaired ketogenic response.
- The inability of SGA infants to initiate a ketogenic response warrants further clinical consideration.
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