International journal of gynaecology and obstetrics: the official organ of the International Federation of Gynaecology and Obstetrics, 78(2):131-138, 2002
International journal of gynaecology and obstetrics: the official organ of the International Federation of Gynaecology and Obstetrics
OBJECTIVE: To evaluate clinical outcomes of pregnancies with one elevated glucose tolerance test.
METHODS: We performed a 50 g glucose challenge test (GCT) in 5,019 pregnant women at 24-28 weeks of gestation. In 1,170 women with plasma glucose levels over 130 mg/dl, a 100 g oral glucose tolerance test (OGTT) was performed at 28-32 weeks of gestation. During follow-up, 282 patients were lost and in the 888 cases that were followed-up, 189 were excluded because of GDM. Therefore 699 study patients were divided into four groups: No Elevated group (NE, N = 577) with all four normal 100 g OGTT values, and Groups 1 (N = 16), 2 (N = 35), and 3 (N = 71) with one elevated 100 g OGTT value after 1, 2 and 3 h, respectively.
RESULTS: Poor maternal outcomes (NE group, Group 1, Group 2, Group 3: 17.5%, 37.6%, 22.9%, 25.3%) with pre-eclampsia, cesarean delivery for cephalopelvic disproportion, failure to progress, or fetal distress, was highest in Group 1 (odds ratio 2.94; 95% confidence interval 1.02-8.42). Poor perinatal outcomes (15.8%, 43.1%, 14.3%, 21.1%) with any one of the following; fetal distress, Apgar score of < 7 at 5 min, hypoglycemia, respiratory distress syndrome, small for gestational age and perinatal death, was also highest in Group 1 (odds ratio 4.24; 95% confidence interval 1.02-17.52).
CONCLUSION: Pregnancies with one elevated glucose tolerance test value after 1 h exhibited increased adverse maternal and perinatal outcomes compared with the group with all normal OGTT values or the groups with an elevated glucose tolerance test value after 2 or 3 h.
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