Using Simplified Meal Boluses Versus Carbohydrate Counting in Adolescents With Hybrid Closed Loop Systems

Description

The goal of this trial is to evaluate blood sugar control in patients with type 1 diabetes when using a simple meal bolus strategy (small, medium, large meals) compared to carbohydrate counting when on a hybrid closed loop system. The main question it aims to answer are: What is the blood sugar time in range when using simple meal boluses versus carbohydrate counting? Participants will: Use the simple meal bolus plan for 4 weeks. Do precise carbohydrate counting for 4 weeks. Provide their continuous glucose monitor and pump data Take surveys about the experience of meal bolusing during the study

Conditions

Type 1 Diabetes

Study Overview

Study Details

Study overview

The goal of this trial is to evaluate blood sugar control in patients with type 1 diabetes when using a simple meal bolus strategy (small, medium, large meals) compared to carbohydrate counting when on a hybrid closed loop system. The main question it aims to answer are: What is the blood sugar time in range when using simple meal boluses versus carbohydrate counting? Participants will: Use the simple meal bolus plan for 4 weeks. Do precise carbohydrate counting for 4 weeks. Provide their continuous glucose monitor and pump data Take surveys about the experience of meal bolusing during the study

Using Simplified Meal Boluses Versus Carbohydrate Counting in Adolescents With Hybrid Closed Loop Systems: A Randomized Crossover Trial

Using Simplified Meal Boluses Versus Carbohydrate Counting in Adolescents With Hybrid Closed Loop Systems

Condition
Type 1 Diabetes
Intervention / Treatment

-

Contacts and Locations

Aurora

Barbara Davis Center, Aurora, Colorado, United States, 80045

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

For general information about clinical research, read Learn About Studies.

Eligibility Criteria

  • * Clinical diagnosis of T1D of at least 1 year duration
  • * Using a commercial HCL system
  • * Willingness to not start any new non-insulin glucose-lowering agent during trial
  • * Willingness to participate in all study procedures
  • * Investigator has confidence that participant can successfully operate all study devices and adhere to protocol
  • * History of \>1 severe hypoglycemic event with seizure or loss of consciousness in the last 6 months or \>1 DKA event in the last 6 months not related to illness or infusion set failure
  • * History of chronic renal disease or currently on hemodialysis, adrenal insufficiency, hypothyroidism that is not adequately treated, use of oral or injectable steroids within the last 8 weeks, or known ongoing adhesive intolerance
  • * A condition, which in the opinion of the investigator or designee, would put the participant or study at risk
  • * Participation in another interventional trial at the time of enrollment
  • * Pregnancy

Ages Eligible for Study

14 Years to 26 Years

Sexes Eligible for Study

ALL

Accepts Healthy Volunteers

No

Collaborators and Investigators

University of Colorado, Denver,

Study Record Dates

2025-09-30