Background: The purpose of this study was to compare treatment satisfaction among people with type 1 and type 2 diabetes after switching from insulin lispro to insulin aspart in continuous subcutaneous insulin infusion (CSII). Efficacy of glycemic control between treatments was also investigated.
Methods: Subjects using CSII with insulin lispro for 6 months or longer continued this therapy over a 4-week period and then switched to insulin aspart in CSII for 12 weeks. The Diabetes Treatment Satisfaction Questionnaire (DTSQ) and Insulin Treatment Satisfaction Questionnaire (ITSQ) were administered immediately prior to the switch and again at the end of 12 weeks of therapy with insulin aspart. Hemoglobin A(1c)(A1C) and fasting blood glucose (FBG) levels, insulin dose, and body weight were recorded at the same time points.
Results: Although average overall DTSQ score did not change significantly, average overall ITSQ score was significantly improved following the insulin aspart treatment. There was a small but statistically significant reduction in mean A1C and FBG following 12 weeks of CSII using insulin aspart.
Conclusions: Both insulin aspart and insulin lispro are appropriate for CSII. ITSQ improvements suggest that aspects of CSII therapy with insulin aspart positively impact treatment satisfaction.