Abbreviation: GDM
A condition of impaired glucose tolerance during pregnancy. Associated with an increased risk of maternal morbidity (e.g., preeclampsia, type 2 diabetes) and fetal morbidity (e.g., macrosomia, shoulder dystocia). Most cases can be controlled with lifestyle changes. Divided into class A1GDM (no medication required) and class A2GDM (medication, usually insulin, required).