Title: A study on the feasibility of wrist pulse determination using electrical impedance measurement

Authors: Patricia-Lidia Cevei; Mariana-Lidia Cevei

Addresses: Faculty of Electronics and Telecommunications, Politehnica University of Timisoara, Bd. Vasile Parvan, No. 2, 300223, Timisoara, Romania. ' Medicine and Pharmacy Faculty, Oradea University, Piata 1 Decembrie, No. 10, 410073 Oradea, Romania

Abstract: The results presented in the present paper are concentrated on the determination of pulse using electrical impedance method at the wrist level. The electric field distribution in an arm segment was estimated by simulation of the electric field changes due to conductivity modifications determined by pulse. It was found that the motion induced conductivity changes, due to arm geometry deformation, are similar in magnitude with the blood related changes. The simulation data was validated in an experiment using a simple test circuit. The data ranges of pulse induced changes of conductivity prove the feasibility of the application of the method in practice. Additional work is necessary to device a method to eliminate motion artefacts by appropriate digital signal processing.

Keywords: wrist pulse determination; electrical impedance; feasibility; simulation; conductivity changes; arm geometry deformation; digital signal processing; DSP.

DOI: 10.1504/IJNBM.2011.045883

International Journal of Nano and Biomaterials, 2011 Vol.3 No.4, pp.360 - 366

Available online: 14 Mar 2012 *

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