Pregnancy outcomes according to the definition of gestational diabetes

• Published in: PloS one Vol. 15; no. 3; p. e0229496
• Main Authors: Koivunen, Sanna, Viljakainen, Matti, Männistö, Tuija, Gissler, Mika, Pouta, Anneli, Kaaja, Risto, Eriksson, Johan, Laivuori, Hannele, Kajantie, Eero, Vääräsmäki, Marja
• Format: Journal Article
• Language: English
• Published: United States Public Library of Science 05.03.2020; Public Library of Science (PLoS)
• Subjects: Biology and Life Sciences; Birth weight; Cesarean section; Criteria; Diabetes; Diabetes mellitus; Diabetes therapy; Diagnostic systems; Fasting; Gestational age; Gestational diabetes; Glucose; Glucose tolerance; Glucose tolerance test; Health; Health promotion; Hospitals; Hyperglycemia; Information systems; Laboratories; Life sciences; Medicin och hälsovetenskap; Medicine; Medicine and Health Sciences; Neurosciences; Obstetrics; Offspring; People and places; Pregnancy; Pregnant women; Public health; Subgroups; Women; Womens health; Finland
• DOI: 10.1371/journal.pone.0229496
• ISSN: 1932-6203

To assess the frequency and perinatal outcomes of gestational diabetes mellitus (GDM) defined by the criteria according to the International Association of Diabetes in Pregnancy Study Group (IADPSG) and the National Institute for Health and Care Excellence (NICE) diagnostic criteria for GDM. A retrospective cohort study. Six secondary and tertiary delivery hospitals in Finland in 2009. Pregnant women (N = 4,033) and their offspring. We used data on comprehensive screening of pregnant women with a 2-h 75-g oral glucose tolerance test (OGTT), performed between gestational weeks 24 and 40. OGTT glucose concentrations were used to identify women who fulfilled IADPSG and NICE criteria. While cut-offs according to Finnish national criteria partly overlapped with both criteria, a subgroup of IADPSG- or NICE-positive GDM women remained undiagnosed by Finnish criteria and hence non-treated. They were analysed as subgroups and compared to controls who were negative with all cut-offs. GDM prevalence, birth weight SD score (BWSDS), large for gestational age (LGA) and caesarean section (CS) rates. Among the 4,033 women screened for GDM, 1,249 (31.0%) and 529 (13.1%) had GDM according to the IADPSG and NICE criteria, respectively. The LGA rate was similar in both groups. Regardless of the diagnostic criteria, women with GDM had a higher risk of induced delivery and CSs than controls. In IADPSG-positive non-treated women, offspring's BWSDS and CS rate were higher than in controls. GDM prevalence was 2.4-fold higher according to the IADPSG compared with the NICE criteria but the LGA rate did not differ. BWSDS and CS rate were increased already with mild untreated hyperglycaemia.