Enhancing user experience with an automated insulin delivery system by upgrading to a next generation sensor

Background The evaluation of user satisfaction with an automated insulin delivery (AID) system is crucial. The aim was to assess the change in user satisfaction after upgrading from a previous to a next generation sensor integrated in the same AID system. Methods A prospective intervention study was conducted. Type 1 diabetes subjects simultaneously upgraded from Guardian-Sensor®4 to Simplera-Sync TM , integrated in the MiniMed TM -780G system. User satisfaction was evaluated at baseline and after 3 months of use of Simplera-Sync TM by the Glucose Monitoring Experience Questionnaire (GME-Q), a validated questionnaire designed to evaluate the experience with a glucose monitoring system. Glucose control and use of the system were also compared. Results Ninety-one subjects were included (age: 38 ± 15 years-old, 59% female). GME-Q global score increased from 3.84 ± 0.49 to 4.40 ± 0.46. All subscales, effectiveness, convenience, and intrusiveness also improved. Sensor use increased from 93% [91, 95] to 98% [96, 99] and time in automode from 94% [92, 97] to 100% [97, 100], with 50% of the subjects achieving 100% of time in automode. A reduction in time in moderate hypoglycaemia and the number of hypoglycaemia episodes was observed. Conclusion Upgrading to a new sensor, as part of an AID system, can improve user satisfaction and allow for increased sensor use and time in automation.