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Study Shows Glucose Monitoring Boosts Pregnancy Safety in Diabetic Women

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A new study recently published in the journal Diabetes Care sheds new light on the critical role of continuous glucose monitoring (CGM) in managing preexisting diabetes during pregnancy. This research explores the association between various CGM metrics and pregnancy outcomes, offering new insights for both patients and healthcare professionals.

CGM is a method that tracks glucose levels in real-time, offering a more comprehensive picture of blood sugar trends throughout the day. This is especially crucial for pregnant women with preexisting diabetes, where stable glucose levels are vital for the health of both mother and baby.

The retrospective cohort study analysed data from pregnant patients with type 1 or type 2 diabetes, who used CGM and delivered at a US tertiary centre between 2018 and 2021. Key metrics evaluated included time in range (TIR), time above range (TAR), time below range (TBR), glucose variability, average glucose, and glucose management indicators.

The study’s results were revealing. It found that all CGM metrics, except TBR, were significantly associated with neonatal morbidity. A noteworthy discovery was the optimal TIR of 66–71%, which aligns with the American Diabetes Association’s recommendation of over 70% TIR. This finding underscores the importance of maintaining glucose levels within a specific range for the best pregnancy outcomes.

The analysis showed that for each five-percentage point increase in TIR, there was a 28% reduction in the odds of neonatal morbidity. These findings highlight the effectiveness of CGM in managing diabetes during pregnancy and its potential to improve neonatal outcomes significantly.

This study provides robust evidence supporting the use of CGM in pregnant women with preexisting diabetes. The clear association between CGM metrics and pregnancy outcomes emphasises the need for healthcare providers to focus on achieving optimal glucose levels through continuous monitoring and tailored treatment plans.

While the study offers promising insights, it also acknowledges the challenges in managing diabetes during pregnancy. Achieving the recommended TIR can be complex, and individual patient circumstances must be considered. The study also suggests the need for further research to understand how different diabetes types might impact these outcomes.

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