Effects of Skin Blood Flow Fluctuations on Non-Invasive Glucose Measurement and a Feasible Blood Flow Control Method

被引：0
作者：
Ge, Qing [1 ]
Han, Tongshuai [1 ]
Liu, Xueying [1 ]
Chen, Jiayu [1 ]
Liu, Wenbo [1 ]
Liu, Jin [1 ]
Xu, Kexin [2 ]
机构：
[1] Tianjin Univ, State Key Lab Precis Measurement Technol & Instru, Tianjin 300072, Peoples R China
[2] Sunrise Technol Co Ltd, Tianjin 300192, Peoples R China
来源：
SENSORS | 2025年 / 25卷 / 04期
关键词：
near-infrared spectroscopy; non-invasive blood glucose measurement; blood flow pre-stimulation; blood flow background interference; NITRIC-OXIDE; INSULIN-SECRETION; SIGNAL; VASODILATION; TEMPERATURE; CALIBRATION; RELEASE; LIGHT;
D O I：
10.3390/s25041162
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
In non-invasive blood glucose measurement (NBGM) based on near-infrared spectroscopy, fluctuations in blood flow represent a primary source of interference. This paper proposes a local blood flow pre-stimulation method in which the local skin is heated to dilate blood vessels and increase blood flow. This approach aims to mitigate the impact of environmental temperature variations, emotional fluctuations, and insulin secretion on blood flow, thereby enhancing the accuracy of glucose measurement. To evaluate the effectiveness of this method, a blood flow interference experiment was conducted to compare the stability of the measured spectra with and without blood flow pre-stimulation. The results demonstrated that the pre-stimulation method presents good anti-interference capabilities. Furthermore, 45 volunteers underwent oral glucose tolerance tests (OGTTs) as a part of the validation experiments. In these tests, the forearm skin blood flow of 24 volunteers was pre-stimulated using elevated temperature, while the skin of the remaining 21 subjects was maintained at a natural temperature level without stimulation. The results indicate that compared to the non-stimulated condition, the correlation between the optical signal at 1550 nm and blood glucose levels was significantly enhanced under the pre-stimulation condition. Furthermore, the root mean square error (RMSE) of the linear prediction model was reduced to just 0.92 mmol/L. In summary, this paper presents a feasible blood flow control strategy that effectively stabilizes internal blood flow, thereby improving the accuracy of NBGM.
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页数：17
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