Continuous glucose monitoring in pregnant women with pregestational type 2 diabetes: a narrative review

Abstract

Background: Type 2 diabetes (T2DM) in pregnancy is associated with poor perinatal outcomes; however, there are limited data on outcomes of continuous glucose monitoring (CGM) use in this population. Objective: We reviewed the literature on studies reporting CGM outcomes in pregnant women with T2DM. We aimed to synthesise in a narrative review, the effects of CGM on glycaemic and perinatal outcomes as well as current research gaps. Results: Of 34 articles screened, three reported CGM outcomes in T2DM pregnancies compared to self-monitoring of blood glucose (SMBG). Other feasibility and mixed population studies were also reviewed. CGM in T2DM has good feasibility, acceptability, and improved glycaemic control beyond SMBG. There were limited data to draw conclusions on its effect on maternal and fetal outcomes. Conclusion: Further studies of perinatal outcomes in pregnant women with T2DM are required to determine the impact of improved glycaemia with CGM.