ABSTRACT
Our objective was to test if tight glycemic control versus loose glycemic control
in gestational diabetic patients and a gestational age of < 32 weeks influence fetal
growth, fetal distress, and neonatal complication. We performed a retrospective study
with 250 gestational diabetes mellitus in Japanese women. Two groups were categorized
according to the timing at which good maternal glycemic control was attained at <
32 weeks and kept so until delivery (group 1) and > 32 weeks or never until delivery
(group 2). In these two groups, neonatal growth (large-for-gestational age: LGA; appropriate-
: AGA; and small- : SGA), neonatal complications (hypoglycemia, jaundice, polycythemia,
and cumulative incidence), and incidence of fetal distress were compared. The χ2 test, unpaired t test, one-way analysis of variance (ANOVA) and multiple logistic
regression analyses were used for statistical analyses. Maternal age, height, prepregnancy
body mass index (BMI), gestational age at delivery were not different between the
groups. In group 2 (> 32 weeks), LGA, macrosomia (> 4 kg), neonatal hypoglycemia was
significantly increased compared with those in group 1. Incidence of SGA, fetal distress,
and neonatal jaundice were not different between the groups. Multiple logistic regression
analysis for LGA showed significant relation to timing of maternal glycemic control.
We concluded that good glycemic control should be attained at < 32 weeks and maintained
until delivery to reduce LGA infants and neonatal hypoglycemia in gestational diabetes
mellitus. This management did not appear to decrease SGA infants or fetal distress.
KEYWORD
Gestational diabetes mellitus - glycemic control - large-for-gestational age - neonatal
complications