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Abstract
BACKGROUND: Glycemic control is particularly challenging for toddlers and preschoolers with type 1 diabetes (T1D), and data on the use of closed-loop systems in this age range is limited.MATERIALS AND METHODS: We studied use of a modified investigational version of the Tandem t:slim X2 Control-IQ system in children aged 2 to 5 years during 48 hours in a supervised outpatient hotel (SH) setting followed by 3 days of home use to examine the safety of this system in young children. Meals and snacks were not restricted and boluses were estimated per parents' usual routine. At least 30 minutes of daily exercise was required during the SH phase. All participants were remotely monitored by study staff while on closed-loop in addition to monitoring by at least one parent throughout the study.RESULTS: Twelve participants diagnosed with T1D for at least three months with mean age 4.7±1.0 years (range 2.0-5.8 years) and HbA1c of 7.3±0.8% were enrolled at three sites. With use of Control-IQ, the percentage of participants meeting our prespecified goals of less than 6% time below 70 mg/dL and less than 40% time above 180 mg/dL increased from 33% to 83%. Control-IQ use significantly improved percent time in range (70-180 mg/dL) compared to baseline (71.3±12.5 vs. 63.7±15.1, p=0.016). All participants completed the study with no adverse events.CONCLUSIONS: In this brief pilot study, use of the modified Control-IQ system was safe in 2-5 year-old children with T1D and improved glycemic control.
View details for DOI 10.1089/dia.2020.0507
View details for PubMedID 33226837