Pregnant women with type 1 diabetes who used a continuous glucose monitoring system were half as likely to have a large baby compared with those using standard finger prick blood glucose measurements. Only 15% of infants needed intensive care admissions due to low blood glucose in the continuous glucose monitoring group, compared with 28% born to mothers in the standard finger prick control group.
Pregnant women using continuous monitoring spent 7% more time in the target glucose range than those on standard measurements. However, their HbA1c levels, which indicate diabetic control over 12 weeks, only improved slightly. This may be unsurprising because HbA1c results are less reliable in pregnancy and women found it hard to stick to the continuous monitoring protocol.
Strict control of blood glucose levels during pregnancy reduces the risk for women with type 1 diabetes, and their babies are less likely to be large or need treatment for low blood glucose. Continuous monitoring provides many readings but requires the user to deliver insulin accordingly. Motivated women may find continuous monitoring helps them manage their glucose levels more closely during pregnancy and reduce both antenatal and postnatal complications.
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