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Year : 2020  |  Volume : 25  |  Issue : 2  |  Page : 61-66

Screening for gestational diabetes in pregnancy in Northwestern Ontario

1 Sioux Lookout Local Education Group, Sioux Lookout, Canada
2 Sioux Lookout Meno Ya Win Health Centre, Sioux Lookout, Canada
3 Northern Ontario School of Medicine, Sioux Lookout, ON, Canada
4 Northwest Health Alliance, Thunder Bay, ON, Canada

Correspondence Address:
MD, M Clin Sci, FCFP, FRRM Len Kelly
Sioux Lookout Meno Ya Win Health Centre, Sioux Lookout
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/CJRM.CJRM_51_19

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Introduction: We estimate the screening and prevalence of gestational diabetes mellitus (GDM) in a primarily first nations obstetrical population in Northwestern Ontario. Methods: The study is an 8-year retrospective analysis of all gestational glucose challenge and tolerance tests performed at the Sioux Lookout Meno Ya Win Health Centre (SLMHC) laboratory from 1 January, 2010 to 31 December, 2017. Test, gestational timing and completion rate of screening were recorded, and GDM prevalence was calculated on the tested population. Screening completion rates were recorded for the subset of women who delivered at SLMHC from 2014 to 2017. Results: The average annual GDM prevalence was 12%, double the Ontario rate. Over the 8-year period, 513 patients were diagnosed with GDM among the 4298 patients screened. Patients were screened with the 2-step (90%) or the 1-step (10%) protocol. Screening occurred <20 weeks in 3%; 54% occurred in <28 weeks and 40% >28 weeks. Seventy percent of the tests were from remote nursing stations. The screening completion rate for women delivering at SLMHC in 2017 was 80.8%. Conclusion: The prevalence of GDM in Northwestern Ontario is twice the provincial rate. Most screening used the 2-step protocol; early screening was underused. Improvements in screening programming are underway and future research may match surveillance rates and results to GDM outcomes.

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