Approach to Using Trend Arrows in the FreeStyle Libre Flash Glucose Monitoring Systems in Adults

Area of Science:

• Endocrinology
• Diabetes Management
• Medical Technology

Background:

• Continuous glucose monitoring (CGM) use is increasing in diabetes care.
• Existing methods for insulin adjustment using CGM trend data exist for some systems (e.g., Dexcom G5).
• Guidance is lacking for FreeStyle Libre systems, which lack automatic alarms.

Purpose of the Study:

• Develop an approach for adjusting rapid-acting insulin doses using trend arrow data from FreeStyle Libre CGM systems.
• Address the unique features of FreeStyle Libre systems, including the absence of automatic alarms.
• Provide practical recommendations for individuals using multiple daily injections.

Main Methods:

• Convened an expert panel to review existing data and develop new recommendations.
• Expanded upon previous engagement and scanning recommendations.
• Incorporated pre-exercise planning considerations specific to FreeStyle Libre systems.
• Developed a method for discrete insulin unit adjustments based on insulin sensitivity and trend arrow directionality.

Main Results:

• The proposed approach provides specific insulin dose adjustments.
• Adjustments are tailored to individual insulin sensitivity and glucose trend direction.
• Recommendations focus on patients using multiple daily injections on intensive insulin therapy.

Conclusions:

• The developed approach offers a safe and practical method for using FreeStyle Libre trend arrow data.
• This guidance aims to improve insulin dose management for adults with diabetes using these specific CGM systems.
• The recommendations facilitate more informed insulin adjustments, enhancing diabetes self-management.