This study aimed to determine the maternal and fetal effects of hyperglycemia, and to compare the clinical outcomes between pregnant teenagers and adult women with gestational diabetes mellitus (GDM).

This was a retrospective cohort study among pregnant women who tested positive for GDM by 75-gram oral glucose tolerance test (OGTT). Data was collected from the 1st of January 2015 to the 31st of December 2019. Maternal and fetal outcomes and the factors associated with maternal and neonatal outcomes among teenage women and adult women with GDM were studied.

A total of 254 charts of women with GDM were reviewed. Overall, adverse maternal outcomes were found in 94.12% and 90% of teenage and adults, respectively; and were almost more likely among primigravida (OR=3.984, CI=1.32-12, p=0.014). The study also showed less probability of having adverse maternal outcomes among multipara and grand multipara women (OR=0.2545, CI=0.08-0.79, P=0.018 and OR=0.1091, CI=0.03-0.45, p=0.002) respectively. Adverse neonatal outcomes were more likely among women who had prior delivery of macrosomic baby (OR=21.9091, CI=1.28-3.73, P=0.033). No adverse fetal outcome records were seen among teenage mothers, while adult women had 5.45% incidence.

Adverse maternal and neonatal outcomes were not significantly higher in the teenage GDM population compared to adult GDM. However, diagnosing and managing GDM among these groups would be beneficial considering their life expectancy and the need for a lifelong preventive program to avoid future development of Type 2 DM (T2DM) and its complications.