A single abnormal value of the glucose tolerance test is related to increased adverse perinatal outcome.

Objective: To evaluate which pregnant women with a single abnormal value in the oral glucose tolerance test are at increased risk for adverse perinatal outcome.

Methods: In this retrospective cohort study, we have evaluated the course of pregnancy in 152 consecutive women with only one abnormal value (OAV), and 624 with a 100 g - glucose tolerance test totally within the range values.

Results: The prevalence of caesarean delivery, hypertensive disorders and macrosomia was higher in the study group when compared with the control group, whereas no difference was noted concerning gestational age at delivery, Apgar score at 1 and 5 min and neonatal hypoglycemia.

Positive association between a single abnormal glucose tolerance test value in pregnancy and subsequent abnormal glucose tolerance.

Objective: To study the prevalence of abnormal glucose tolerance among women with a single abnormal glucose tolerance test value in previous pregnancy and identify factors predictive of the later development of abnormal glucose tolerance in this group.

Study Design: In all, 58 women with gestational diabetes, 66 with a single abnormal value in a glucose tolerance test, and 56 control women underwent a 75-g oral glucose tolerance test at a mean of 6.9 years from the index pregnancy.