Predictive hyperglycemia and hypoglycemia minimization: In-home double-blind randomized controlled evaluation in...

Area of Science:

• Pediatric Endocrinology
• Biomedical Engineering
• Diabetes Technology

Background:

• Type 1 diabetes (T1D) management in children requires precise glucose control, especially overnight.
• Existing automated insulin delivery systems like predictive low glucose suspension (PLGS) aim to improve glycemic outcomes.
• Further optimization of overnight glucose control in pediatric T1D is crucial.

Purpose of the Study:

• To evaluate the feasibility, safety, and efficacy of a predictive hyperglycemia and hypoglycemia minimization (PHHM) system.
• To compare PHHM system performance against PLGS alone in optimizing overnight glucose control.
• To assess the impact on time in target glucose range and glycemic variability in children with T1D.

Main Methods:

• A randomized trial involving 28 children aged 6-14 years with T1D.
• Participants were assigned to either PHHM mode or PLGS-only mode for 42 nights.
• Primary outcome measured was the percentage of time in sensor-measured glucose range (70-180 mg/dL) overnight.

Main Results:

• The PHHM system significantly increased time in target glucose range from 66% to 76% (P<.001).
• Average morning blood glucose levels decreased from 176 mg/dL to 154 mg/dL (P<.001) with PHHM.
• No increase in hypoglycemia was observed with the PHHM system.

Conclusions:

• The PHHM system effectively optimizes overnight glycemic control in children with T1D.
• PHHM significantly improves time in target glucose range and lowers mean glucose levels.
• PHHM demonstrates a superior approach to overnight glucose management compared to PLGS alone.