Diagnostics, treatment and after-care for gestational diabetes mellitus

The recommendations for diagnosing and treating gestational diabetes mellitus has been thoroughly revised by the German Working Group on Diabetes and Pregnancy of the German Diabetes Society (DDG) and the German Society of Gynaecology and Obstetrics (DGGG). In August 2011, they were published in the form of the evidence-based S3 guideline for diagnostics, treatment and after-care of gestational diabetes mellitus (GDM).1)

The new guideline defines the term „gestational diabetes” more narrowly, excluding type 1 and type 2 diabetes mellitus and secondary diabetes from the previous definition.

When there are already risk factors in the first trimester immediately after determining pregnancy, the oral glucose tolerance test (OGTT) with 75 g of glucose is replaced by a test to determine occasional or fasting glucose before the 24th week of pregnancy.

Pregnant patients without a known history of diabetes are recommended to have a standardised 75 g OGTT performed in the 24th to 27th week of pregnancy to test for the presence of GDM.

Test material
Only venous blood (NaF / citrate plasma) may be used for this.

External link: 1)Evidence-based guideline on diagnostics, therapy and after care of the German Diabetes Society (DDG) and the German Society for Gynaecology and Obstetrics (DGGG) for gestational diabetes mellitus (GDM). (10/2011), Diagram GDM Guideline 1, page 85.

The flow diagram on hyperglycaemia diagnostics during pregnancy clearly illustrates the diagnostic procedure.


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