Screening for Gestational Diabetes Mellitus in Early Pregnancy: What Is the Evidence?

The incidence of gestational diabetes mellitus (GDM) is increasing worldwide. This has a significant effect on the health of the mother and offspring. There is no doubt that screening for GDM between 24 and 28 weeks is important to reduce the risk of adverse pregnancy outcomes. However, there is no...

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Main Authors: Lore Raets, Kaat Beunen, Katrien Benhalima
Format: Article
Language:English
Published: MDPI AG 2021-03-01
Series:Journal of Clinical Medicine
Subjects:
Online Access:https://www.mdpi.com/2077-0383/10/6/1257
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author Lore Raets
Kaat Beunen
Katrien Benhalima
author_facet Lore Raets
Kaat Beunen
Katrien Benhalima
author_sort Lore Raets
collection DOAJ
description The incidence of gestational diabetes mellitus (GDM) is increasing worldwide. This has a significant effect on the health of the mother and offspring. There is no doubt that screening for GDM between 24 and 28 weeks is important to reduce the risk of adverse pregnancy outcomes. However, there is no consensus about diagnosis and treatment of GDM in early pregnancy. In this narrative review on the current evidence on screening for GDM in early pregnancy, we included 37 cohort studies and eight randomized controlled trials (RCTs). Observational studies have shown that a high proportion (15–70%) of women with GDM can be detected early in pregnancy depending on the setting, criteria used and screening strategy. Data from observational studies on the potential benefit of screening and treatment of GDM in early pregnancy show conflicting results. In addition, there is substantial heterogeneity in age and BMI across the different study populations. Smaller RCTs could not show benefit but several large RCTs are ongoing. RCTs are also necessary to determine the appropriate cut-off for HbA1c in pregnancy as there is limited evidence showing that an HbA1c ≥6.5% has a low sensitivity to detect overt diabetes in early pregnancy.
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spelling doaj.art-7ab19b1b1d1f451ba22f4941f2ad64802023-11-21T11:00:06ZengMDPI AGJournal of Clinical Medicine2077-03832021-03-01106125710.3390/jcm10061257Screening for Gestational Diabetes Mellitus in Early Pregnancy: What Is the Evidence?Lore Raets0Kaat Beunen1Katrien Benhalima2Department of Clinical and Experimental Endocrinology, KU Leuven, Herestraat 49, 3000 Leuven, BelgiumDepartment of Clinical and Experimental Endocrinology, KU Leuven, Herestraat 49, 3000 Leuven, BelgiumDepartment of Endocrinology, University Hospital Gasthuisberg, KU Leuven, Herestraat 49, 3000 Leuven, BelgiumThe incidence of gestational diabetes mellitus (GDM) is increasing worldwide. This has a significant effect on the health of the mother and offspring. There is no doubt that screening for GDM between 24 and 28 weeks is important to reduce the risk of adverse pregnancy outcomes. However, there is no consensus about diagnosis and treatment of GDM in early pregnancy. In this narrative review on the current evidence on screening for GDM in early pregnancy, we included 37 cohort studies and eight randomized controlled trials (RCTs). Observational studies have shown that a high proportion (15–70%) of women with GDM can be detected early in pregnancy depending on the setting, criteria used and screening strategy. Data from observational studies on the potential benefit of screening and treatment of GDM in early pregnancy show conflicting results. In addition, there is substantial heterogeneity in age and BMI across the different study populations. Smaller RCTs could not show benefit but several large RCTs are ongoing. RCTs are also necessary to determine the appropriate cut-off for HbA1c in pregnancy as there is limited evidence showing that an HbA1c ≥6.5% has a low sensitivity to detect overt diabetes in early pregnancy.https://www.mdpi.com/2077-0383/10/6/1257pregnancygestational diabetes mellitusearly screeningdiabetes
spellingShingle Lore Raets
Kaat Beunen
Katrien Benhalima
Screening for Gestational Diabetes Mellitus in Early Pregnancy: What Is the Evidence?
Journal of Clinical Medicine
pregnancy
gestational diabetes mellitus
early screening
diabetes
title Screening for Gestational Diabetes Mellitus in Early Pregnancy: What Is the Evidence?
title_full Screening for Gestational Diabetes Mellitus in Early Pregnancy: What Is the Evidence?
title_fullStr Screening for Gestational Diabetes Mellitus in Early Pregnancy: What Is the Evidence?
title_full_unstemmed Screening for Gestational Diabetes Mellitus in Early Pregnancy: What Is the Evidence?
title_short Screening for Gestational Diabetes Mellitus in Early Pregnancy: What Is the Evidence?
title_sort screening for gestational diabetes mellitus in early pregnancy what is the evidence
topic pregnancy
gestational diabetes mellitus
early screening
diabetes
url https://www.mdpi.com/2077-0383/10/6/1257
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