- •The dichotomy of the COVID-19 gestational diabetes screening criteria does not address the diversity of cases and the effects on health-care systems in Canada.
- •In this report, we propose a middle-ground screening criteria that can be used if there are moderate disruptions to testing for and treatment of gestational diabetes.
- •This suggests screening only high-risk women with a 50 g challenge followed by a 75 g oral glucose tolerance test using the same glucose thresholds recommended in the Diabetes Canada 2018 clinical practice guidelines.
- Yamamoto J.
- Donovan L.
- Feig D.
- Berger H.
Early Pregnancy Screening for Overt Diabetes
Regular Screening (24 to 28 Weeks’ Gestation)
Option 1: No change to GDM screening
Option 2: Screen only high-risk women
- 1.Previous diagnosis of GDM.
- 2.Prepregnancy or early pregnancy body mass index ≥30 kg/m2.
- 3.Maternal age ≥40 years.
- 4.Being in a high-risk ethnic group (African, Arab, Asian, Hispanic, Indigenous or South Asian).
Option 3: Screen with an A1C and random plasma glucose only
- •All pregnant women without pre-existing diabetes will be screened with A1C and nonfasting, random plasma glucose.
- •Women with an A1C of <5.7% and a random plasma glucose of <11.1 mmol/L require no further testing or treatment.
- •Those with an A1C of ≥5.7% or a random plasma glucose of ≥11.1 mmol/L are identified as having GDM and should be referred to the interprofessional diabetes and pregnancy health-care team.
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