35-PUB: Effect of Structured HCP-Supervised Use of isCGM on Glycemic Management in Children with Type 1 Diabetes during a Summer Camp

Introduction and Objective: Diabetes camps provide a unique semi-controlled environment to evaluate diabetes technologies and structured education in children with type 1 diabetes (T1D). While real-time CGM (rtCGM) has demonstrated benefits in prior camp studies, evidence regarding intermittently scanned CGM (isCGM) combined with structured healthcare professional (HCP) intervention remains limited. To determine whether structured HCP-supervised use of isCGM improves short-term glycemic management during a pediatric T1D summer camp and to assess accuracy and user satisfaction. Methods: In this prospective single-arm observational study, 21 children with T1D (age 3-17 years) participated in a 3-day residential camp in 2025. isCGM sensors were applied 6 days before the camp. CGM metrics during the camp were compared with the 6-day pre-camp period. Multidisciplinary HCPs supervised glucose monitoring using an isCGM and delivered structured education. Primary outcome was change in CGM glycemic indices during the camp. Secondary outcomes included user satisfaction survey and analytical accuracy. Results: TIR significantly increased from 54.7 ± 21.8% (off camp) to 65.7 ± 18.5% (on camp) (p=0.031). TAR level 2 (> 250 mg/dL) decreased from 18.7 ± 18.7% to 8.8 ± 12.4% (p=0.049). TBR levels remained unchanged, indicating improved glycemia without increased hypoglycemia. Sensor accuracy was stable (MARD ~13%), and 75-88% of paired values were within Parkes/Clarke Zone A and 100% within Zones A+B. Satisfaction scores were high among both campers and HCPs, particularly for trend interpretation and usability. Conclusion: Structured HCP-supervised use of isCGM significantly improved short-term glycemic management during a pediatric T1D camp without increasing hypoglycemia. isCGM demonstrated reliable accuracy and high user acceptance. These findings support the incorporation of supervised CGM-based educational programs into pediatric diabetes care to enhance safety, engagement, and real-world glycemic outcomes. Disclosure T. Kondo: None. Funding The Japan Diabetes Foundation/Costco Research Grant (2023-04)