Evaluation of Extended Infusion Set Wear Using Medtronic Extended Wear Sof-set Infusion Set
Phase 1
Completed
- Conditions
- Type 1 Diabetes
- Interventions
- Registration Number
- NCT02687256
- Lead Sponsor
- Stanford University
- Brief Summary
This is a blinded cross-over study to see if extended wear insulin infusion sets can prolong insulin infusion set wear up to 7 days in adults with Type 1 Diabetes.
- Detailed Description
This is a double blinded cross-over study. Subjects will be asked to wear infusion set either a standard infusion set or an extended wear infusion set. They will wear each infusion set twice, and the order of infusion set wear will be randomized with the first infusion set wear and then alternated over 4 weeks. By performing a cross over study using both experimental infusion sets and standard infusion sets, the investigators hope to see whether there is a benefit to using an extended wear infusion set.
Recruitment & Eligibility
- Status
- COMPLETED
- Sex
- All
- Target Recruitment
- 24
Inclusion Criteria
- Clinical diagnosis of type 1 diabetes for at least one year and using an insulin pump for at least 12 months
- The diagnosis of type 1 diabetes is based on the investigator's judgment; C-peptide level and antibody determinations are not needed.
- Age 18 to 55 years
- Hemoglobin A1c level less than or equal to 8.5%
- Willing to use Novolog insulin while they are participating in the study
- Total daily insulin dose is at least 0.3 units/kg/day
- For females, not currently known to be pregnant
- An understanding of and willingness to follow the protocol and sign the informed consent
- Willingness to wear the experimental insulin infusion sets throughout the study
- Must be able to understand spoken and written English
Exclusion Criteria
- Diabetic ketoacidosis in the past 3 months
- blood urea nitrogen (BUN), Creatinine, or liver function test (ALT or AST) more than three times the upper limit of normal, or thrombocytopenia
- Severe hypoglycemia resulting in seizure or loss of consciousness in the 3 months prior to enrollment
- Pregnant or lactating females
- Known tape allergies
- Current treatment for a seizure disorder
- Cystic fibrosis
- Active infection
- A known medical condition that in the judgment of the investigator might interfere with the completion of the protocol such as the following examples:
- Inpatient psychiatric treatment in the past 6 months for either the subject or the subject's primary care giver (i.e., parent or guardian)
- Presence of a known adrenal disorder
- If on antihypertensive, thyroid, anti-depressant or lipid lowering medication, lack of stability on the medication for the past 2 months prior to enrollment in the study
- Abuse of alcohol
- Dialysis for renal failure
Study & Design
- Study Type
- INTERVENTIONAL
- Study Design
- CROSSOVER
- Arm && Interventions
Group Intervention Description Protocol 2 (Part 1): Sequence 2 Standard Infusion set Participants will wear the Extended Wear infusion set with heparin at 40 IU (week 1), 80 IU (week 2), 120 IU (week 3), and 200 IU (week 4), then the control (standard) infusion set (week 5). Protocol 1: Standard then Extended Set Standard Infusion set Participants will wear the control (standard) infusion set for 1 week, then switch to the experimental Extended Wear infusion set in combination with Heparin 400 IU for 1 week, then will repeat the cycle for a total of 4 weeks. Protocol 1: Extended then Standard Set Extended Wear infusion set Participants will wear the experimental Extended Wear infusion set in combination with Heparin 400 IU for 1 week, then switch to the control (standard) infusion set for 1 week, then will repeat the cycle for a total of 4 weeks. Protocol 2 (Part 1): Sequence 1 Standard Infusion set Participants will wear the control (standard) infusion set for 1 week, then the Extended Wear infusion set with heparin at 40 IU (week 1), 80 IU (week 2), 120 IU (week 3), and 200 IU (week 4). Protocol 1: Standard then Extended Set Extended Wear infusion set Participants will wear the control (standard) infusion set for 1 week, then switch to the experimental Extended Wear infusion set in combination with Heparin 400 IU for 1 week, then will repeat the cycle for a total of 4 weeks. Protocol 2 (Part 1): Sequence 3 Standard Infusion set Participants will wear the Extended Wear infusion set with heparin at 80 IU (week 1), 120 IU (week 2), and 200 IU (week 3), then the control (standard) infusion set (week 4), then the Extended Wear infusion set with heparin at 40 IU (week 5). Protocol 2 (Part 1): Sequence 4 Extended Wear infusion set Participants will wear the Extended Wear infusion set with heparin at 120 IU (week 1), and 200 IU (week 2), then the control (standard) infusion set (week 3), then the Extended Wear infusion set with heparin at 40 IU (week 4), and 80 IU (week 5). Protocol 2 (Part 1): Sequence 4 Heparin Participants will wear the Extended Wear infusion set with heparin at 120 IU (week 1), and 200 IU (week 2), then the control (standard) infusion set (week 3), then the Extended Wear infusion set with heparin at 40 IU (week 4), and 80 IU (week 5). Protocol 1: Extended then Standard Set Standard Infusion set Participants will wear the experimental Extended Wear infusion set in combination with Heparin 400 IU for 1 week, then switch to the control (standard) infusion set for 1 week, then will repeat the cycle for a total of 4 weeks. Protocol 2 (Part 1): Sequence 3 Extended Wear infusion set Participants will wear the Extended Wear infusion set with heparin at 80 IU (week 1), 120 IU (week 2), and 200 IU (week 3), then the control (standard) infusion set (week 4), then the Extended Wear infusion set with heparin at 40 IU (week 5). Protocol 2 (Part 1): Sequence 5 Heparin Participants will wear the Extended Wear infusion set with heparin at 200 IU (week 1), then the control (standard) infusion set (week 2), then the Extended Wear infusion set with heparin at 40 IU (week 3), 80 IU (week 4), and 80 IU (week 5). Protocol 2 (Part 2): Standard then Extended Set Extended Wear infusion set Participants will wear the control (standard) infusion set for 1 week, then switch to the experimental Extended Wear infusion set in combination with Heparin 80 IU for 1 week, then will repeat the cycle for a total of 4 weeks. Protocol 2 (Part 2): Standard then Extended Set Heparin Participants will wear the control (standard) infusion set for 1 week, then switch to the experimental Extended Wear infusion set in combination with Heparin 80 IU for 1 week, then will repeat the cycle for a total of 4 weeks. Protocol 2 (Part 1): Extended then Standard Set Extended Wear infusion set Participants will wear the experimental Extended Wear infusion set in combination with Heparin 80 IU for 1 week, then switch to the control (standard) infusion set for 1 week, then will repeat the cycle for a total of 4 weeks. Protocol 2 (Part 1): Extended then Standard Set Standard Infusion set Participants will wear the experimental Extended Wear infusion set in combination with Heparin 80 IU for 1 week, then switch to the control (standard) infusion set for 1 week, then will repeat the cycle for a total of 4 weeks. Protocol 2 (Part 1): Sequence 1 Extended Wear infusion set Participants will wear the control (standard) infusion set for 1 week, then the Extended Wear infusion set with heparin at 40 IU (week 1), 80 IU (week 2), 120 IU (week 3), and 200 IU (week 4). Protocol 2 (Part 1): Sequence 2 Extended Wear infusion set Participants will wear the Extended Wear infusion set with heparin at 40 IU (week 1), 80 IU (week 2), 120 IU (week 3), and 200 IU (week 4), then the control (standard) infusion set (week 5). Protocol 2 (Part 1): Sequence 5 Standard Infusion set Participants will wear the Extended Wear infusion set with heparin at 200 IU (week 1), then the control (standard) infusion set (week 2), then the Extended Wear infusion set with heparin at 40 IU (week 3), 80 IU (week 4), and 80 IU (week 5). Protocol 2 (Part 1): Sequence 4 Standard Infusion set Participants will wear the Extended Wear infusion set with heparin at 120 IU (week 1), and 200 IU (week 2), then the control (standard) infusion set (week 3), then the Extended Wear infusion set with heparin at 40 IU (week 4), and 80 IU (week 5). Protocol 2 (Part 2): Standard then Extended Set Standard Infusion set Participants will wear the control (standard) infusion set for 1 week, then switch to the experimental Extended Wear infusion set in combination with Heparin 80 IU for 1 week, then will repeat the cycle for a total of 4 weeks. Protocol 2 (Part 1): Sequence 5 Extended Wear infusion set Participants will wear the Extended Wear infusion set with heparin at 200 IU (week 1), then the control (standard) infusion set (week 2), then the Extended Wear infusion set with heparin at 40 IU (week 3), 80 IU (week 4), and 80 IU (week 5). Protocol 1: Standard then Extended Set Heparin Participants will wear the control (standard) infusion set for 1 week, then switch to the experimental Extended Wear infusion set in combination with Heparin 400 IU for 1 week, then will repeat the cycle for a total of 4 weeks. Protocol 1: Extended then Standard Set Heparin Participants will wear the experimental Extended Wear infusion set in combination with Heparin 400 IU for 1 week, then switch to the control (standard) infusion set for 1 week, then will repeat the cycle for a total of 4 weeks. Protocol 2 (Part 1): Sequence 1 Heparin Participants will wear the control (standard) infusion set for 1 week, then the Extended Wear infusion set with heparin at 40 IU (week 1), 80 IU (week 2), 120 IU (week 3), and 200 IU (week 4). Protocol 2 (Part 1): Sequence 2 Heparin Participants will wear the Extended Wear infusion set with heparin at 40 IU (week 1), 80 IU (week 2), 120 IU (week 3), and 200 IU (week 4), then the control (standard) infusion set (week 5). Protocol 2 (Part 1): Sequence 3 Heparin Participants will wear the Extended Wear infusion set with heparin at 80 IU (week 1), 120 IU (week 2), and 200 IU (week 3), then the control (standard) infusion set (week 4), then the Extended Wear infusion set with heparin at 40 IU (week 5). Protocol 2 (Part 1): Extended then Standard Set Heparin Participants will wear the experimental Extended Wear infusion set in combination with Heparin 80 IU for 1 week, then switch to the control (standard) infusion set for 1 week, then will repeat the cycle for a total of 4 weeks.
- Primary Outcome Measures
Name Time Method Time to an infusion set failure due to an occlusion within 1 week Glucose \>250 mg/dL with failure of a correction dose to lower the glucose by 50 mg/dL, or ketones \> or = 0.6 mg/dL with a glucose reading of \>250 mg/dL (in the absence of illness), or a pump occlusion alarm
- Secondary Outcome Measures
Name Time Method signs of infection at insulin infusion site 1 week erythema or induration of \> 1cm in diameter at injection site
Trial Locations
- Locations (1)
Stanford University
🇺🇸Palo Alto, California, United States