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Critical Reviews™ in Biomedical Engineering
SJR: 0.207 SNIP: 0.376 CiteScore™: 0.79

ISSN Imprimer: 0278-940X
ISSN En ligne: 1943-619X

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Critical Reviews™ in Biomedical Engineering

DOI: 10.1615/CritRevBiomedEng.v24.i4-6.30
pages 353-466

Bioelectrical Impedance Techniques in Medicine
Part II: Monitoring of Physiological Events by Impedance

Max E. Valentinuzzi
Laboratorio de Bioengenieria, Facultad de Ciencias Exactas y Tecnologia, Universidad Nacional de Tucuman & Instituto Superior de Investigaciones Biologicas (INSIBIO), cc 327, 4000 Tucuman, Argentina
Jean-Pierre Morucci
Institut National de la Sante et de la Recherche Medicale—INSERM U305, Recherche et Transfert Industriel en Technologie Biomedicale, Centre Hospitalier Hotel Dieu, 31052 Toulouse Cedex, France
Carmelo J. Felice
Laboratorio de Bioengenieria, Facultad de Ciencias Exactas y Tecnologia, Universidad Nacional de Tucuman & Institute Superior de Inverstigaciones Biologicas (INSIBIO), cc 327, 4000 Tucuman, Argentina

RÉSUMÉ

The measurement of a physiological event caused by a change in dimension, conductivity, or permittivity can be easily carried out by the impedance technique, requiring only the application of two or more electrodes, which are easy to apply. In some cases, the impedance is transformed into its resistive and reactive components, in others the total impedance is measured. In certain cases only a change in impedance, with or without separation into its components, contains enough information to be correlated to the physiological event. Recent measurements of physiological data by impedance techniques have reemphasized the value of the painless and harmless acquisition from human and animal subjects in such diverse domains as manned spacecraft, nutrition, and electrical impedance imaging. This part attempts to present all the numerous experiments performed on humans to estimate changes in volume, orientation, and distribution of fluids and tissues accompanying physiological activity. The main sections concern the respiratory system, the cardiovascular system, the brain, the total body impedance, muscle and skin impedance, and bacteriometry.


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