<prompt> Feature of diabetes mellitus in pregnancy:a Postdatismb Hydramniosc Neonatal hyperglycemiad congenital defecte PPHbdeadeacebce  <response>: As explained in the previous question maternal hyperglycaemia leads to fetal hyperglycaemia, which in turn causes polyuria and thus causes polyhydramnios.Polyhydramnios leads to preterm delivery and not post datism.Excessive uterine enlargement because of polyhydramnios and macrosomia causes increased incidence of atonic PPH.Diabetes leads to increased incidence of congenital defects in fetus.Maternal hyperglycemia to fetal hyperglycemia hyperinsulinemia to neonatal hypoglycemia at birth. 