Wrist pulse determination using electrical impedance measurements [articol]

Abstract

The present paper presents the results of a study to determine the feasibility of the determination of pulse at the wrist level using electrical impedance measurement method. In the cross section of the hand at wrist level the pulsating artery was modeled by a generic unit area conductivity change. The dipole model of the electric field change by a unit area of increased conductivity was used for a 2D electric field simulation. The field changes by geometry deformation and shifting bone position in the cross section as a result of hand motion is shown to be on the same order of magnitude as the blood related changes. The electric simulation data are encouraging for practical application of the method. More research is necessary to reliably separate motion artifacts from pulse data.