The Brazilian Gestational Diabetes Study evaluated the ADA and WHO diagnostic criteria against pregnancy outcomes in an observational cohort study of nearly 5,000 women. Using the 2-hour 75-g OGTT criteria proposed by the ADA, the incidence of GDM was 2.4% (95% CI 2.0-2.9). The incidence of GDM using the WHO criteria was 7.2% (6.5-7.9). Both the ADA and WHO criteria predicted an increased risk of macrosomia, preeclampsia, and perinatal death. However, this increase was not statistically significant for macrosomia by the ADA criteria or for perinatal death by the WHO criteria. This study concluded that, although the WHO criteria identified more cases of GDM, both the ADA and WHO criteria are valid options for the diagnosis of GDM and the prediction of adverse pregnancy outcomes.6
The World Health Organization (WHO) diagnostic criteria, which are used in many countries outside of North America, are based on a 2-hour 75-g OGTT. GDM is diagnosed by WHO criteria if either the fasting glucose is > 126 mg/dl or the 2-hour glucose is > 140 mg/dl. Table 1 summarizes ADA and WHO criteria for the diagnosis of GDM.
The Brazilian Gestational Diabetes Study evaluated the ADA and WHO diagnostic criteria against pregnancy outcomes in an observational cohort study of nearly 5,000 women. Using the 2-hour 75-g OGTT criteria proposed by the ADA, the incidence of GDM was 2.4% (95% CI 2.0-2.9). The incidence of GDM using the WHO criteria was 7.2% (6.5-7.9). Both the ADA and WHO criteria predicted an increased risk of macrosomia, preeclampsia, and perinatal death. However, this increase was not statistically significant for macrosomia by the ADA criteria or for perinatal death by the WHO criteria. This study concluded that, although the WHO criteria identified more cases of GDM, both the ADA and WHO criteria are valid options for the diagnosis of GDM and the prediction of adverse pregnancy outcomes.6The World Health Organization (WHO) diagnostic criteria, which are used in many countries outside of North America, are based on a 2-hour 75-g OGTT. GDM is diagnosed by WHO criteria if either the fasting glucose is > 126 mg/dl or the 2-hour glucose is > 140 mg/dl. Table 1 summarizes ADA and WHO criteria for the diagnosis of GDM.
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