Real-time monitoring of the hydration level by multi-frequency bioimpedance spectroscopy

Allegri, Daniele and Vaca, David and Ferreira, Denis and Rogantini, Marco and Barrettino, Diego (2017) Real-time monitoring of the hydration level by multi-frequency bioimpedance spectroscopy. UNSPECIFIED. In: 2017 IEEE International Instrumentation and Measurement Technology Conference (I2MTC), 22.05.2017-25.05.2017, Turin, Italy.

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Abstract

This paper presents a system designed to monitor at real-time the hydration index of patients suffering from renal diseases and that are forced to undergo regular dialysis sessions. The system comprises the smart electrode (SE)-skin interface and the SE stimulation and readout electronics. This medical system combines the tetra polar multi-frequency bioimpedance analysis with the four-electrode focused impedance measurement (FIM). When compared to the Keysight E4980A, the SE is able to measure impedances with 3% of maximal relative error. Measurements obtained by monitoring patients during dialysis sessions show the close correlation between the removed fluid and the hydration index H.

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