Early postnatal hypoglycaemia in newborn infants of diabetic mothers.

This study found that early postnatal hypoglycaemia was mainly induced by foetal hyperinsulinaemia, in close relation to maternal hyperglycaemia, even in well-controlled pregnancies of 59 mothers with insulin-treated diabetes mellitus, 29 with insulin-dependent diabetes mellitus and 30 with gestational diabetes mellitus. Ten of the newborn children (17%) had a blood glucose concentration below 1.0 mmol l(-1) at 2 h postnatally. Cord insulin-like growth factor-I or glucagon concentrations were not related to the early decline of blood glucose.