Fetal lung maturation in pregestational diabetes mellitus and chronic complications

Pregnant patients with pregestational diabetes mellitus (DM) and micro and macroangiopathic complications have a higher risk of their worsening and of presenting other pregnancy- associated disorders. The progression of diabetic retinopathy occurs during pregnancy and postpartum. Nephropathy is associated with an increased risk of preeclampsia, preterm delivery, fetal growth restriction, and perinatal mortality. When there is coronary artery disease or gastroparesis, an increase in maternal and fetal morbidity is observed Preterm delivery is a prevalent condition in diabetic patients. Corticosteroid fetal lung maturation has been extensively studied, with numerous controlled trials, to become one of the most important evidence-based prenatal therapies to reduce perinatal mortality and decrease respiratory distress syndrome, intraventricular hemorrhage, and necrotizing enterocolitis, in premature infants. Nevertheless, this evidence did not include patients with DM, for this reason perinatal results are not known in this group of patients.