COntinuous Glucose Monitoring in nEwborns of Mothers With Insulin-Treated Gestational Diabetes Mellitus

Inclusion Criteria: * Maternal age of 18 years or older * Singleton pregnancy * Insulin-treated gestational diabetes mellitus Exclusion Criteria: * Multifetal pregnancy * Congenital malformations or metabolic defects in the newborn * Preterm birth (defined as birth \<37 weeks of gestation) * Smoking during pregnancy * Preeclampsia, fetal growth restriction * Perinatal asphyxia * Congenital infections in the newborn * Adverse skin reactions (eczema, wounds) in the planned sensor insertion area