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Updated: Dec 30, 2025

Improving IV Insulin Administration in a Community Hospital
Published on: June 11, 2012
10-Day structured initiation protocol from multiple daily injection to hybrid closed-loop system in children and
Goran Petrovski1, Fawziya Al Khalaf2, Judith Campbell2
1Division of Endocrinology and Diabetes, Department of Pediatric Medicine, Sidra Medicine, HB 6E 219, Al Luqta Street, Education City North Campus, PO Box 26999, Doha, Qatar. gpetrovski@sidra.org.
Insights
The 10-day initiation protocol for the MiniMed 670G hybrid closed-loop (HCL) system effectively improved glycemic control in children with type 1 diabetes on multiple daily injections (MDI). This concise protocol led to significant reductions in HbA1c and increased time in range without severe hypoglycemia.
Area of Science:
- Endocrinology
- Pediatric Diabetes Management
- Medical Device Technology
Background:
- Type 1 diabetes (T1D) management in children on multiple daily injections (MDI) often presents challenges in achieving optimal glycemic control.
- Hybrid closed-loop (HCL) systems offer a potential solution, but efficient initiation protocols are crucial for successful adoption.
Purpose of the Study:
- To evaluate the efficacy of a structured 10-day initiation protocol for the MiniMed 670G HCL system in pediatric T1D patients previously on MDI.
- To assess the system's ability to achieve desirable glycemic control within this short initiation period.
Main Methods:
- An open-label, single-arm study involving 30 children (aged 7-18 years) with T1D on MDI.
- A 10-day protocol included system assessment, training, Manual Mode use, and transition to Auto Mode.
- Participants used the HCL system for 84 days in Auto Mode.
Main Results:
- Mean HbA1c decreased significantly from 8.2% at baseline to 6.7% after 84 days in Auto Mode (p=0.017).
- Time in glycemic range (70-180 mg/dL) increased from 46.9% to 75.6% (p<0.001).
- No severe hypoglycemia or diabetic ketoacidosis (DKA) events were reported.
Conclusions:
- The 10-day initiation protocol for the MiniMed 670G HCL system is effective for children and adolescents with T1D transitioning from MDI.
- This concise protocol facilitates successful adoption of HCL technology, leading to improved glycemic outcomes.
Aim:
The aim of this study was to evaluate the 10-day initiation protocol for MiniMed 670G hybrid closed-loop (HCL) system in individuals with type 1 diabetes on multiple daily injection (MDI) in achieving desirable glycemic control.
Methods:
An open-label single-arm, single-center, clinical investigation in children aged 7-18 years on MDI following a structured protocol: 2 days, HCL system assessment; 5 days, HCL system training (2-h sessions on 5 consecutive days with groups of 3-5 participants and families); 3 days, Manual Mode use of HCL system; 84 days, Auto Mode use of the HCL system, cumulating in 10 days from MDI to Auto Mode activation.
Results:
A total of 30 children (age 10.24 ± 2.6 years) were enrolled in the study, and all completed the planned 84 days on Auto Mode. The participants used the sensor for a median of 92% of the time and spent a median of 89% in Auto Mode. The mean HbA1c decreased from 8.2 ± 1.4% (66 ± 15.3 mmol/mol) at baseline to 6.7 ± 0.5% (50 ± 5.5 mmol/mol) at the end of the study (p = 0.017). Time in range (70-180 mg/dL) increased from 46.9 ± 18.5% at baseline to 75.6 ± 6.9% in Auto Mode (p < 0.001). This was achieved while spending 2.8% of the time below 70 mg/dL and without any severe hypoglycemia or DKA.
Conclusion:
Children and adolescents with type 1 diabetes on MDI therapy can successfully initiate the HCL system, using a concise structured 10-day protocol.
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