1. Glycaemic patterns during breastfeeding with postpartum use of closed-loop insulin delivery in women with type 1 diabetes.
- Author
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Donovan LE, Bell RC, Feig DS, Lemieux P, Murphy HR, Sigal RJ, Ho J, Virtanen H, Crawford S, and Yamamoto JM
- Subjects
- Humans, Female, Adult, Pregnancy, Hypoglycemic Agents administration & dosage, Hypoglycemic Agents therapeutic use, Blood Glucose Self-Monitoring, Glycemic Control methods, Glycated Hemoglobin metabolism, Glycated Hemoglobin analysis, Infant, Newborn, Infant, Diabetes Mellitus, Type 1 drug therapy, Diabetes Mellitus, Type 1 blood, Breast Feeding, Blood Glucose metabolism, Blood Glucose drug effects, Blood Glucose analysis, Insulin administration & dosage, Insulin therapeutic use, Postpartum Period, Insulin Infusion Systems
- Abstract
Aims/hypothesis: This study aimed to describe the relationship between breastfeeding episodes and maternal glucose levels, and to assess whether this differs with closed-loop vs open-loop (sensor-augmented pump) insulin therapy., Methods: Infant-feeding diaries were collected at 6 weeks, 12 weeks and 24 weeks postpartum in a trial of postpartum closed-loop use in 18 women with type 1 diabetes. Continuous glucose monitoring (CGM) data were used to identify maternal glucose patterns within the 3 h of breastfeeding episodes. Generalised mixed models adjusted for breastfeeding episodes in the same woman, repeat breastfeeding episodes, carbohydrate intake, infant age at time of feeding and early pregnancy HbA
1c . This was a secondary analysis of data collected during a randomised trial (ClinicalTrials.gov registration no. NCT04420728)., Results: CGM glucose remained above 3.9 mmol/l in the 3 h post-breastfeeding for 93% (397/427) of breastfeeding episodes. There was an overall decrease in glucose at nighttime within 3 h of breastfeeding (1.1 mmol l-1 h-1 decrease on average; p=0.009). A decrease in nighttime glucose was observed with open-loop therapy (1.2 ± 0.5 mmol/l) but was blunted with closed-loop therapy (0.4 ± 0.3 mmol/l; p<0.01, open-loop vs closed-loop)., Conclusions/interpretation: There is a small decrease in glucose after nighttime breastfeeding that usually does not result in maternal hypoglycaemia; this appears to be blunted with the use of closed-loop therapy., (© 2024. The Author(s).)- Published
- 2024
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