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COMPARATIVE STUDY
JOURNAL ARTICLE
RANDOMIZED CONTROLLED TRIAL

Real-time continuous glucose monitoring during labour and delivery in women with Type 1 diabetes - observations from a randomized controlled trial

S Cordua, A L Secher, L Ringholm, P Damm, E R Mathiesen
Diabetic Medicine: a Journal of the British Diabetic Association 2013, 30 (11): 1374-81
23758126

AIMS: To explore whether real-time continuous glucose monitoring during labour and delivery supplementary to hourly self-monitored plasma glucose in women with Type 1 diabetes reduces the prevalence of neonatal hypoglycaemia.

METHODS: Women with Type 1 diabetes participating in a randomized controlled trial on the effect of real-time continuous glucose monitoring in pregnancy were included in this study. Twenty-seven of 60 (45%) women in the intervention arm used real-time continuous glucose monitoring during labour and delivery, supplementary to hourly self-monitored plasma glucose. Real-time continuous glucose monitoring glucose data covering the last 8 h prior to delivery were retrospectively evaluated, and maternal hypo- and hyperglycaemia were defined as glucose values ≤ 3.9 mmol/l and > 7.0 mmol/l, respectively. Women in the control arm (n = 59) solely used self-monitored plasma glucose. Neonatal hypoglycaemia was defined as a 2-h plasma glucose < 2.5 mmol/l.

RESULTS: In infants of women using real-time continuous glucose monitoring during labour and delivery, 10 (37%) developed neonatal hypoglycaemia vs. 27 (46%) infants in the control arm (P = 0.45). Among 10 infants with and 17 infants without neonatal hypoglycaemia within the real-time continuous glucose monitoring arm, median maternal self-monitored plasma glucose was 6.2 (range 4.2-7.8) vs. 5.6 (3.3-8.5) mmol/l (P = 0.26) during labour and delivery, with maternal hyperglycaemia present in 17 (0-94) vs. 4 (0-46)% of the time (P = 0.02), and birthweight was 4040 (3102-4322) vs. 3500 (1829-4320) g (P = 0.04). Maternal hypoglycaemia up to delivery was relatively rare.

CONCLUSIONS: The prevalence of neonatal hypoglycaemia was comparable between infants of women using real-time continuous glucose monitoring supplementary to self-monitored plasma glucose during labour and delivery and infants of women solely using self-monitored plasma glucose.

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