Type 1 Diabetes Mellitus Clinical Trial
Official title:
Early Feasibility Study of Adaptive Advisory/Automated (AAA) Control of Type 1 Diabetes
The purpose of this study is to use an Advisory/Automated Adaptive (AAA) or Closed-Loop Control (CLC) system for insulin delivery in adults with Type 1 Diabetes (T1DM) in an outpatient setting to evaluate the system's ability to significantly improve blood glucose levels. A component of this study evaluated AAA or CLC Control overnight only in 5 consecutive overnights in a cross-over trial with sensor-augmented pump therapy occurring prior to or following CLC overnight. Another component of this study planned evaluating if the AAA Control system run on the Diabetes Assistant (DiAs) system can prevent hypoglycemia during and following exercise more efficiently during a 40 hour trial this part of the trial was not conducted due to a preference for overnight only configuration in pilot testing. This protocol represents a culmination of prior clinical trials in development of this AAA system and benefits from the synthesis of those components.
The primary goal of this study is to test an Advisory/Automated Adaptive (AAA) or CLC Control system, which includes three interacting control modules: - Module 1 - Automated Safety Supervision (SSM) responsible for prevention of hypoglycemia, which can be adapted (individualized) with prior data for each subject; - Module 2 - Advisory Module (AM) responsible for pre-meal boluses and postprandial corrections, which can be adapted (individualized) with prior data for each subject; - Module 3 -- Automated Basal Rate Module (BRM) responsible for augmentation of basal rate to compensate for changes in insulin sensitivity, particularly overnight (e.g. dawn phenomenon), which can be adapted with prior data for each subject. Daytime control (40hour studies) includes all 3 modules (n=36 were not recruited). Overnight only closed loop control (5 consecutive overnights) includes Module 1 and 3 (n=5-7). ;
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