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. 2005 Jan;90(1):78–81. doi: 10.1136/adc.2003.039412

Neurodevelopmental outcome of hypoglycaemia in healthy, large for gestational age, term newborns

P Brand 1, N Molenaar 1, C Kaaijk 1, W Wierenga 1
PMCID: PMC1720084  PMID: 15613521

Abstract

Aims: To evaluate the effects of transient hypoglycaemia on the first day of life in 75 healthy term large for gestational age (LGA) infants, born to non-diabetic mothers, on their neurodevelopmental outcome at the age of 4 years.

Methods: Screening for hypoglycaemia was performed 1, 3, and 5 hours after birth, and continued if blood glucose levels were low. Treatment with intravenous glucose for hypoglycaemia was started if hypoglycaemia was severe or symptomatic. Patients' development and behaviour was examined at the age of 4 years by the Denver Developmental Scale, a non-verbal intelligence test, and the Child Behaviour Check List.

Results: There were no significant differences between children with neonatal normoglycaemia (n = 15) and hypoglycaemia (plasma glucose <2.2 mmol/l 1 hour after birth, or <2.5 mmol/l subsequently; n = 60) in Denver developmental scale scores and child behaviour checklist scores. Although total IQ did not differ between hypoglycaemic and normoglycaemic children, one subscale (reasoning) did (mean difference 9.3, 95% CI 1.3 to 17.2). The correlation between reasoning IQ and neonatal blood glucose levels was weak and not statistically significant. When other definitions for hypoglycaemia were applied, the difference in reasoning IQ was not found. There were no differences in any of the test scores between hypoglycaemic children who had and who had not been treated with intravenous glucose.

Conclusion: Transient mild hypoglycaemia in healthy, term LGA newborns does not appear to be harmful to psychomotor development at the age of 4 years.

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Figure 1.

Figure 1

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 Composition of study population from original population of 117 healthy term LGA newborns. The study population of 75 tested children was representative of the root population with respect to demographic, socioeconomic, and clinical characteristics (including blood glucose levels).

Selected References

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