The Diagnosis Of Gestational Diabates Mellitus

Gestational diabetes mellitus (GDM) was previously described as any degree of glucose intolerance with first recognition at pregnancy for many years. Currently, pregnant with DM at their initial prenatal visit has been diagnosed as overt diabetes, not gestational diabetes. The remaining pregnant who found not to have DM at initial visit and not known to have DM should undergo oral glucose tolerance screening at 24-28. weeks of gestation and diagnosed as GDM if any value exceeds the threshold values. The prevalence of GDM is reported 1-14% among the different populations. Its diagnose is increasing over the world with new GDM criteria. Recently, ADA has adopted the 2008 International Association of Diabetes and Pregnancy Study Groups (IADPSG) conference criteria based on the Hyperglycaemia and Adverse Pregnancy Outcome (HAPO) study. IADPSG criteria for GDM is including; 75 gr glucose tolerance test has been recommended as diagnostic test for GDM and a single abnormal value has been considered to be sufficient for diagnosis in this conference. The threshold values for glucose tolerance test are as following; for fasting glucose; 92 mg/dl (5.1 mmol/L), for 1.hour; 180 mg/dl (10 mmol/L), for 2 hour; 153 mg/dl (8.5 mmol/L). In this review, the modifications on GDM definition and the current diagnostic criteria for GDM were evaluated.