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Neural Network Incorporating Meal Information Improves Accuracy of Short-Time Prediction of Glucose Concentration

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5 Author(s)
Chiara Zecchin ; Department of Information Engineering, University of Padova, 35137 Padova, Italy ; Andrea Facchinetti ; Giovanni Sparacino ; Giuseppe De Nicolao
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Diabetes mellitus is one of the most common chronic diseases, and a clinically important task in its management is the prevention of hypo/hyperglycemic events. This can be achieved by exploiting continuous glucose monitoring (CGM) devices and suitable short-term prediction algorithms able to infer future glycemia in real time. In the literature, several methods for short-time glucose prediction have been proposed, most of which do not exploit information on meals, and use past CGM readings only. In this paper, we propose an algorithm for short-time glucose prediction using past CGM sensor readings and information on carbohydrate intake. The predictor combines a neural network (NN) model and a first-order polynomial extrapolation algorithm, used in parallel to describe, respectively, the nonlinear and the linear components of glucose dynamics. Information on the glucose rate of appearance after a meal is described by a previously published physiological model. The method is assessed on 20 simulated datasets and on 9 real Abbott FreeStyle Navigator datasets, and its performance is successfully compared with that of a recently proposed NN glucose predictor. Results suggest that exploiting meal information improves the accuracy of short-time glucose prediction.

Published in:

IEEE Transactions on Biomedical Engineering  (Volume:59 ,  Issue: 6 )