Time Spent in Hypoglycemia According to Age and Time of Day: Observations During Closed-Loop Insulin Delivery

Heba Alwan, Julia Ware, Charlotte K Boughton, Malgorzata E Wilinska, Janet M Allen, Rama Lakshman, Munachiso Nwokolo, Sara Hartnell, Lia Bally, Carine de Beaufort, Rachel E J Besser, Fiona M Campbell, Nikki Davis, Louise Denvir, Mark L Evans, Elke Fröhlich-Reiterer, Atrayee Ghatak, Sabine E Hofer, Thomas M Kapellen, Lalantha LeelarathnaJulia K Mader, Parth Narendran, Birgit Rami-Mehrar, Martin Tauschmann, Hood Thabit, Ajay Thankamony, Roman Hovorka

Research output: Contribution to journalArticlepeer-review

Abstract

Objective: We aimed to assess whether percentage of time spent in hypoglycemia during closed-loop insulin delivery differs by age group and time of day. Methods: We retrospectively analyzed data from hybrid closed-loop studies involving young children (2-7 years), children and adolescents (8-18 years), adults (19-59 years), and older adults (≥60 years) with type 1 diabetes. Main outcome was time spent in hypoglycemia <3.9 mmol/L (<70 mg/dL). Eight weeks of data for 88 participants were analyzed. Results: Median time spent in hypoglycemia over the 24-h period was highest in children and adolescents (4.4% [interquartile range 2.4-5.0]) and very young children (4.0% [3.4-5.2]), followed by adults (2.7% [1.7-4.0]), and older adults (1.8% [1.2-2.2]); P < 0.001 for difference between age groups. Time spent in hypoglycemia during nighttime (midnight-05:59) was lower than during daytime (06:00-23:59) across all age groups. Conclusion: Time in hypoglycemia was highest in the pediatric age group during closed-loop insulin delivery. Hypoglycemia burden was lowest overnight across all age groups.

Original languageEnglish
Pages (from-to)485-491
Number of pages7
JournalDiabetes technology & therapeutics
Volume25
Issue number7
Early online date13 Jun 2023
DOIs
Publication statusPublished - 1 Jul 2023

Keywords

  • Adolescent
  • Aged
  • Child
  • Child, Preschool
  • Humans
  • Blood Glucose
  • Cross-Over Studies
  • Diabetes Mellitus, Type 1/drug therapy
  • Hypoglycemia/chemically induced
  • Hypoglycemic Agents/therapeutic use
  • Insulin/adverse effects
  • Insulin Infusion Systems
  • Insulin, Regular, Human/therapeutic use
  • Retrospective Studies
  • Treatment Outcome
  • Young Adult
  • Adult
  • Middle Aged

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