ASSESSING THE RISK OF GESTATIONAL DIABETES IN TWIN GESTATION

This study examines the hypothesis that twin gestation is a risk facto r for gestational diabetes. In a retrospective analysis, the incidence of gestational diabetes in twin and singleton pregnancies was determi ned in groups matched for maternal age, weight, and parity. One-hour o ral glucose challenge tests (50 g) were used to screen 9185 pregnant w omen. Gestational diabetes was diagnosed when abnormal screens (greate r than or equal to 130 mg/dL) were followed by two or more abnormal va lues on a 3-hour (100 g) glucose tolerance test using National Diabete s Data Group (NDDG) criteria, A twin gestation was identified in 1.5% (138/9185) of the pregnancies, Gestational diabetes was diagnosed in 5 .8% (8/138) and 5.4% (439/9047) of the twin and singleton pregnancies, respectively. The incidence of gestational diabetes is similar for si ngleton and twin gestations.