Hematocrit measurement by dielectric spectroscopy

Author

Treo, E.F. ; Cervantes, D.O. ; Felice, C.J. ; Tirado, M. ; Valentinuzzi, M.E.

Author_Institution

Departamento de Bioingenieria, Univ. Nacional de Tucuman, Argentina

Volume

2

fYear

2002

fDate

2002

Firstpage

1750

Abstract

A new method to measure hematocrit (HTC) in extra-corporeal blood systems is presented based on permittivity changes. Human blood samples were tested at different hematocrit levels pairing the values of permittivity (obtained with a commercial impedance analyzer) with the traditional centrifugation results. The comparison yielded a high correlation (R=0.98) while theoretical simplifications suggest that the method is independent of possible changes in the conductivities of the intra- and extra-cellular compartments.

Keywords

artificial organs; bioelectric phenomena; biomedical measurement; blood; cellular biophysics; permittivity measurement; spectroscopy; commercial impedance analyzer; extracellular compartment; extracorporeal blood systems; healthy voluntary donors; human blood samples; intracellular compartment; permittivity changes; traditional centrifugation results; Biomembranes; Blood; Cells (biology); Conductivity; Dielectric measurements; Electrochemical impedance spectroscopy; Frequency; Humans; Impedance measurement; Permittivity measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Engineering in Medicine and Biology, 2002. 24th Annual Conference and the Annual Fall Meeting of the Biomedical Engineering Society EMBS/BMES Conference, 2002. Proceedings of the Second Joint

ISSN

1094-687X

Print_ISBN

0-7803-7612-9

Type

conf

DOI

10.1109/IEMBS.2002.1106634

Filename

1106634