Background: Hybrid closed-loop (HCL) systems have revolutionized the treatment of diabetes, enabling doctors to cope with challenging conditions that were previously almost impossible to manage or were very risky and difficult.

Aims: To assess the efficacy and safety of a hybrid closed-loop (HCL) system during Ramadan fasting in a pediatric cohort with type 1 diabetes (T1D).

Research Design And Methods: Glucose control outcomes in older children and adolescents aged 8-16 years with automated insulin delivery for T1D were analyzed during Ramadan and 1 month before Ramadan. Participants on MiniMed standard HCL (670G) or advanced HCL (780G) systems of Medtronic were categorized as fasting or nonfasting.

Results: The average age of the 19 participants (8 and 11 were on standard and advanced HCL systems, respectively) was 11.35 ± 2 years. Eleven patients fasted during Ramadan. Pump setup and sensor statistics were the same during Ramadan and the month before; no significant difference was found between the two groups in terms of insulin and glucose control metrics, with practically the same coefficient of variation, time in range (TIR) and time spent in hypoglycemia, maintained within the international recommended targets. Total daily doses were paradoxically higher in patients who fasted during Ramadan (p = 0.01), without repercussions on glucose control metrics.

Conclusions: Standard and advanced HCL use during Ramadan were safe and were associated with a maintained optimum TIR (>70 %) and no significant hypoglycemia in adolescents and older children with T1D.

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http://dx.doi.org/10.1016/j.diabres.2023.110867DOI Listing

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