Study on How Fiasp® Can Influence Blood Sugar Levels of type1 Diabetic Patients in Their Daily Lives, With the Help of the Freestyle Libre® Device

The purpose of this study is to collect information about Fiasp® to evaluate how effective Fiasp® is in treating elevated blood sugar in patients with type 1 diabetes, compared with the participant's previous insulin treatment. The study will also assess how satisfied the participants are with the treatment with Fiasp® and the impact of the treatment on quality of life. The study has also been set up to learn more about how effective Fiasp® is in controlling the glucose levels during the day and night. The duration of the study is expected to be approximately 2 years. The participation is expected to be approximately 6-8 months for each patient.