Associations between insulin pump self-management and HbA1c in type 1 diabetes

Area of Science:

• Endocrinology
• Diabetes Management
• Medical Technology

Background:

• Insulin pump therapy is a cornerstone of type 1 diabetes management.
• Effective self-management of insulin pumps is crucial for achieving optimal glycemic control.
• Glycated hemoglobin (HbA1c) is a key indicator of long-term glycemic outcomes.

Purpose of the Study:

• To investigate the associations between various insulin pump self-management behaviors and HbA1c levels in adults with type 1 diabetes.
• To identify specific self-management factors that contribute to improved glycemic control.

Main Methods:

• A cross-sectional online survey was administered to adult insulin pump users with type 1 diabetes (n=770).
• Data on self-management practices (infusion set change frequency, meal bolus timing, pump setting adjustments) were collected.
• HbA1c values were obtained from national registries, and statistical analyses (backward selected linear regression) were performed.

Main Results:

• Changing infusion sets every 0-4 days was associated with a lower HbA1c compared to changing every 5-10 days (-5 mmol/mol).
• Rarely missing meal boluses was linked to significantly lower HbA1c (-6 mmol/mol) compared to frequent omissions.
• Self-adjusting pump settings demonstrated the strongest association with reduced HbA1c (-6 mmol/mol) compared to relying on healthcare professionals for all adjustments.

Conclusions:

• Key self-management strategies, including timely infusion set changes, consistent meal bolus delivery, and proactive adjustment of pump settings, are associated with improved glycemic control (lower HbA1c).
• Empowering individuals to self-manage their insulin pump settings appears to be a critical factor in optimizing type 1 diabetes outcomes.