Diabetes mellitus in pregnancy.

This article reviews normal and abnormal carbohydrate metabolism in pregnancy, with an emphasis on the challenges that are faced by those who care for the pregnant woman who has hyperglycemia. The growing problem of type 2 diabetes in pregnancy, the controversial use of oral antihyperglycemic agents for the treatment of gestational diabetes, and the long-term issue of diabetes prevention in those whose hyperglycemia resolves postpartum are also addressed.