Subcutaneous Catheter Type and Wear Duration in Automated Insulin Delivery Systems: Associations with Glycemic Control in Patients Living with Type 1 Diabetes
Authors' conclusion
Infusion set type, cannula length, and wear duration were not significantly associated with glycemic outcomes among patients using tubed pumps in real-life AID use. Wear duration was associated with anthropometric parameters and insulin requirements.
Study context
- Population
- Adults with T1D using an automated insulin delivery (AID) system; infusion set analyses restricted to tubed pump users; 51% female, mean age 48 ± 15.1 years, diabetes duration 25 ± 13.3 years, mean body mass index (BMI) 27 ± 4.9 kg/m²279 using tubed pumps
- Participants
- 321 adults
- Exposure
- Perpendicular vs angled catheters; cannula lengths; wear duration
- Outcome
- Catheter type, cannula length, wear duration and continuous glucose monitoring (CGM)-derived glycemic outcomes
Methodological detailssingle-center
- Single-center
Main finding
As reported in the abstract
CGM-derived glycemic outcomes by catheter type, cannula length and wear duration
- Mean wear duration, longer than recommended, not associated with poorer glycemic control
- 4.6 ± 2.0 days
Observational data: associations, not effects.
Further findings
Glycemic control of the cohort
- Mean TIR
- 70% ± 16.2
- TBR
- 2% ± 2.5
- CV
- 34% ± 7.1
Wear duration vs anthropometrics and insulin dose
- Wear duration inversely correlated with body weight, BMI and total daily insulin dose, particularly for perpendicular catheters
Original publication
Subcutaneous Catheter Type and Wear Duration in Automated Insulin Delivery Systems: Associations with Glycemic Control in Patients Living with Type 1 Diabetes. Diabetes Technol Ther. Published 11 February 2026. doi:10.
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