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Young Children Have Higher Variability of Insulin Requirements: Observations During Hybrid Closed-Loop Insulin

Klemen Dovc1,2, Charlotte Boughton1, Martin Tauschmann1,3

  • 1Wellcome Trust-MRC Institute of Metabolic Science, University of Cambridge, Cambridge, U.K.

Diabetes Care
|June 22, 2019
PubMed

Insights

Young children with type 1 diabetes exhibit greater insulin needs variability during closed-loop insulin delivery compared to adults and adolescents. This highlights the need for rapid clinical adoption of hybrid closed-loop systems for this population.

Area of Science:

  • Endocrinology
  • Pediatrics
  • Biomedical Engineering

Background:

  • Type 1 diabetes management requires precise insulin delivery.
  • Closed-loop insulin delivery systems aim to automate glucose control.
  • Understanding age-related insulin needs variability is crucial for optimizing closed-loop systems.

Purpose of the Study:

  • To quantify age-related differences in insulin requirements during day and night hybrid closed-loop insulin delivery.
  • To assess the variability of insulin needs across different pediatric age groups and adults with type 1 diabetes.

Main Methods:

  • Retrospective analysis of data from hybrid closed-loop studies.
  • Inclusion of participants aged 1-6 years (young children), 7-12 years (children), 13-17 years (adolescents), and adults (>18 years).
  • Quantification of insulin delivery variability using the coefficient of variation over 3 weeks of unrestricted-living hybrid closed-loop use.

Main Results:

  • Analysis included data from 114 participants (2,365 nights, 2,367 days).
  • Young children showed significantly higher variability in insulin delivery compared to adults (nighttime: 10.7 pp; daytime: 6.4 pp) and adolescents (nighttime: 10.2 pp; daytime: 7.0 pp).
  • Statistical significance was observed for all comparisons (P < 0.05).

Conclusions:

  • Diabetes management in young children is complicated by higher insulin requirement variability.
  • Findings support the expedited clinical implementation of closed-loop insulin delivery systems in young children with type 1 diabetes.
  • Optimized closed-loop strategies are needed to address the unique physiological needs of this vulnerable population.
Abstract

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