An Evaluation of “I, Pancreas” Algorithm Performance In Silico

• Published in: Journal of diabetes science and technology Vol. 3; no. 4; pp. 857 - 862
• Main Authors: Wilinska, Malgorzata E., Nodale, Marianna
• Format: Journal Article
• Language: English
• Published: United States Diabetes Technology Society 01.07.2009
• Subjects: Algorithms; Blood Glucose - drug effects; Computer Simulation; Critical Illness; Diabetes Mellitus - drug therapy; Humans; Insulin - administration & dosage; Insulin - therapeutic use; Original
• ISSN: 1932-2968; 1932-3107
• DOI: 10.1177/193229680900300433

The objective of this study was to investigate the performance of a newly proposed insulin titrating algorithm to achieve tight glycemic control in the critically ill. A simulation environment with 10 critically ill virtual subjects was employed to evaluate the "I, Pancreas" algorithm proposed by Braithwaite et al. and described in an article in this issue of Journal of Diabetes Science and Technology. The algorithm was coded in MATLAB and was "plugged in" to a simulation environment to provide glucose control in a 48-hour-long simulated study. Mean blood glucose was 6.5 +/- 0.4 mmol/liter (118 +/- 7.8 mg/dl), percentage of time spent in the target glucose range was 38% (32-44%), and the hyperglycemic index was 0.6 (0.4 -1.0) mmol/liter [11.1 (7.7-18.1) mg/dl]. A single episode of mild hypoglycemia at 3.8 mmol/liter (69 mg/dl) was observed during 480 hours of glucose control. In this initial in silico evaluation, the "I, Pancreas" algorithm provided a safe control of glucose in the simulated study and achieved tight glycemic control 38% of the time.