In 2010, International Association of Diabetes and Pregnancy Study Group (IADPSG) proposed new criteria for diagnosing and classifying gestational diabetes mellitus (GDM), based on data of the observational hyperglycemia and adverse pregnancy outcomes (HAPO) study [1]. Since the new diagnostic criteria would increase the frequency of GDM diagnosis without a detailed cost-effectiveness analysis, the number of health care associations implementing the new criteria is still limited [2]. Thus, there is a paucity of information on the IADPSG-defined GDM from a real experi- Abstract. There is a paucity of information on perinatal data regarding gestational diabetes mellitus (GDM) by the new criteria from a real experience because the number of health care associations implementing the new criteria is still limited. The aim of this study is to investigate perinatal features of the new criteria-defined GDM. We reviewed a total of 995 women with singleton pregnancy that underwent GDM screening followed by a diagnostic oral glucose tolerance test (OGTT). All women found to have GDM underwent self-monitoring of blood glucose measurements as well as dietary management. Insulin treatment was initiated when dietary treatment did not achieve the glycemic goal. Of the 995 women, 141 had GDM (14.2%): 104 with one, 27 with two, and 10 with three abnormal OGTT values. Women with two or three abnormal OGTT values (2/3-AV) needed insulin treatment more frequently than those with one abnormal OGTT value (1-AV) (70.3% vs 23.1%, P < 0.0001). After adjustment for age, pregravid overweight, gestational weeks at diagnosis, a first-degree family history of diabetes was correlated with the implementation of insulin treatment in women with 1-AV (adjusted odds ratio 3.9; 95% Confidence Interval 1.7-9.2; P = 0.001). When compared perinatal outcomes between women with normal glucose tolerance and GDM, fetal growth and the occurrence of pregnancy-induced hypertension were comparable between the two groups. Our data suggest that the IADPSG-defined GDM with 1-AV show less severe glucose intolerance, but might be at risk of insulin requirement when a first-degree family history of diabetes exists.
Key words:The new consensus criteria, Gestational diabetes mellitus, Large-for gestational age, Gestational hypertension ence. Especially, clinical significance of GDM by one abnormal value under the IADPSG criteria remains unknown [3]. In Japan, the IADPSG recommendation was adopted in July 2010 [4], and is commonly used in the obstetric practice, although the screening strategy varies in hospitals. With this background, we have investigated perinatal outcomes of the IADPSG-defined GDM in our hospital. First, maternal clinical and metabolic features were compared between women with a single and two or three abnormal oral glucose tolerance test (1-and 2/3-AV) values. Second, factors associated with insulin treatment in women with 1-AV were investigated. Third, perinatal outcomes were compared between women with normal glucose tolerance and IADPSG-defined ...