Mean Glucose Slope – Principal Component Analysis Classification to Detect Insulin Infusion Set Failure
IFAC proceedings volumes(2011)
Abstract
The bivariate classification technique using the mean glucose slope (MGS) and the first component of the principal component analysis (PCA), is applied to insulin infusion set failure detection (IISF), a challenging problem faced by individuals with type 1 diabetes that are on continuous insulin infusion pump therapy. The objective of this study was to determine if the proposed approach could be used to distinguish between normal patient data and data from patients under IISF online, in a reasonably short period of time. The proposed approach was applied to simulated glucose concentrations for 10 patients, based on a nonlinear physiological model of insulin and glucose dynamics. Although it presents few false alarms, it was capable of detecting most drifting (ramp) infusion set failures before complete failure occurred.
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Key words
Artificial pancreas,biomedical systems,fault detection,multivariate analysis,type 1 diabetes
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