Postpartum Glucose Monitoring in Pregnant Women with Gestational Diabetes Mellitus: A Dual Center Experience.

Objective: Gestational diabetes mellitus (GDM) is known to be a predisposing factor in the development of type 2 diabetes mellitus in affected mothers and their offspring. Current guidelines recommend a two-hour postpartum glucose tolerance test (OGTT) in patients with a history of GDM. However, compliance rates for ordering and completion has been reported as suboptimal. The COVID-19 pandemic has had significant impact on healthcare systems, requiring the adaptation of novel strategies to manage patients. So far, there is a paucity of data on how this impacts compliance rates for the oral glucose tolerance test. We aimed to compare the compliance rate and impact of the pandemic on OGTT ordering and completion between a women's hospital and a community health center.

Methods: A dual center retrospective cohort study was carried out to compare the compliance for ordering and completion of the two-hour postpartum OGTT in women diagnosed with GDM between a women's hospital and community health center two years pre-COVID-19 (2018-2019) and during the COVID-19 pandemic (2020-2021).

Results: 2569 pregnancies were included during these time periods. Prior to the pandemic, the test ordering compliance at the women hospital was 30.2% vs 79.3% for the community health center. During the pandemic, the test ordering compliance at the women's hospital dropped to 24.8%, while it remained steady at the community center (80.8%). Correspondingly, there was a drop in test completion compliance rate at both centers during the pandemic when compared to rate before the pandemic.

Conclusion: Diagnosis of GDM increased during the pandemic, which may be attributed to factors like sedentary lifestyles, and restructuring of care models, among others. There was increased test ordering and test completion compliance at the community health center compared to the women's hospital, which can be attributed to routine follow-ups and other factors.