Cited by 77Diabetes Management and ResearchDiabetes Management and EducationPancreatic function and diabetes

An Integrated Multivariable Artificial Pancreas Control System

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Turksoy, Kamuran, Quinn, Lauretta T., Littlejohn, Elizabeth, Cinar, Ali·2014·Journal of Diabetes Science and Technology

Abstract

Objective: The objective was to develop a closed-loop (CL) artificial pancreas (AP) control system that uses continuous measurements of glucose concentration and physiological variables, integrated with a hypoglycemia early alarm module to regulate glucose concentration and prevent hypoglycemia. Materials and Methods: Eleven open-loop (OL) and 9 CL experiments were performed. A multivariable adaptive artificial pancreas (MAAP) system was used for the first 6 CL experiments. An integrated multivariable adaptive artificial pancreas (IMAAP) system consisting of MAAP augmented with a hypoglycemia early alarm system was used during the last 3 CL experiments. Glucose values and physical activity information were measured and transferred to the controller every 10 minutes and insulin suggestions were entered to the pump manually. All experiments were designed to be close to real-life conditions. Results: Severe hypoglycemic episodes were seen several times during the OL experiments. With the MAAP system, the occurrence of severe hypoglycemia was decreased significantly ( P < .01). No hypoglycemia was seen with the IMAAP system. There was also a significant difference ( P < .01) between OL and CL experiments with regard to percentage of glucose concentration (54% vs 58%) that remained within target range (70-180 mg/dl). Conclusions: Integration of an adaptive control and hypoglycemia early alarm system was able to keep glucose concentration values in target range in patients with type 1 diabetes. Postprandial hypoglycemia and exercise-induced hypoglycemia did not occur when this system was used. Physical activity information improved estimation of the blood glucose concentration and effectiveness of the control system.

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Crossref · 10.1177/1932296814524862

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Authors
Turksoy, K., Quinn, L. T., Littlejohn, E., & Cinar, A.
Affiliations
  • Illinois Institute of Technology (US)
  • University of Illinois Chicago (US)
  • University of Chicago (US)
  • Department of Biomedical Engineering, Illinois Institute of Technology, Chicago, IL, USA
Venue
Journal of Diabetes Science and Technology
Published
2014-04-07
Volume
8
Issue
3
Pages
498-507
ISSN
1932-2968 (ISSN-L)
OpenAlex
W2120973917
Cited by
77
References
38
Citations by year
2026: 1 · 2025: 2 · 2024: 1 · 2023: 1 · 2022: 2 · 2021: 1 · 2020: 5 · 2019: 12 · 2018: 13 · 2017: 14 · 2016: 11 · 2015: 13 · 2014: 1
FWCI
10.46
Type
journal article
Language
en
Open access
Locations
  • Journal of Diabetes Science and Technology (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
National Institute of Diabetes and Digestive and Kidney Diseases (R01DK085611)
Topics
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Diabetes Management and Research
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Diabetes Management and Education
  • Health Sciences › Medicine › Surgery › Pancreatic function and diabetes
Keywords
artificial pancreas, type 1 diabetes, hypoglycemia prevention, multivariable adaptive control, physical activity, postprandial hypoglycemia, exercise-induced hypoglycemia, continuous glucose monitoring
MeSH terms
Adolescent, Adult, Algorithms, Blood Glucose, Diabetes Mellitus, Type 1, Equipment Design, Female, Humans, Hypoglycemia, Hypoglycemic Agents, Insulin, Insulin Infusion Systems, Male, Materials Testing, Predictive Value of Tests, Signal Processing, Computer-Assisted, Time Factors, Blood Glucose Self-Monitoring, Multivariate Analysis, Systems Integration, Pancreas, Artificial, Young Adult, Clinical Alarms

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