PMID: 9662161Jul 14, 1998Paper

Sensitivity distributions of impedance cardiography using band and spot electrodes analyzed by a three-dimensional computer model

Annals of Biomedical Engineering
P KauppinenJ Malmivuo

Abstract

Impedance cardiography (ICG) offers a safe, noninvasive, and inexpensive method to track stroke volume estimates over long periods of time. Several modified ICG measurement configurations have been suggested where for convenience or improved performance the standard band electrodes are replaced with electrocardiogram electrodes. This report assesses the sensitivity of the conventional and three modified ICG methods in detecting regional conductivity changes in the simulated human thorax. The theoretical analyses of the measurement sensitivity employ the reciprocity theorem and the lead field theory with a highly detailed, anatomically accurate, three-dimensional computer thorax model. This model is based on the finite-difference element method and the U.S. National Library of Medicine's Visible Human Man anatomy data. The results obtained indicate that the conventional four-band ICG is not specifically sensitive to detect conductivity changes in the region of the heart, aortas, and lungs. Analyzed modified electrode configurations do not reproduce exactly the measurement sensitivity distribution of the conventional four-band ICG. Thus, although the signals measured with modified spot arrangements may appear similar to the four-...Continue Reading

Citations

Feb 27, 2008·Annals of Biomedical Engineering·Fei Yang, Robert P Patterson
Mar 26, 2010·Annals of Biomedical Engineering·Ming-Xing KuangAi-Rong Hu
Nov 27, 1999·Medical Engineering & Physics·P K KauppinenJ Malmivuo
Mar 15, 2005·Acta Obstetricia Et Gynecologica Scandinavica·Kati TihtonenJukka Uotila
Apr 14, 2000·IEEE Transactions on Bio-medical Engineering·D A HettrickD C Warltier
May 11, 2004·Physiological Measurement·Andres Belalcazar, Robert P Patterson
Jul 27, 2006·Physiological Measurement·G CotterY Moshkovitz
Mar 31, 2005·Physiological Measurement·Sungbo Cho, Hagen Thielecke
Mar 31, 2005·Physiological Measurement·Andres Belalcazar, Robert Patterson
Jun 6, 2014·Physiological Measurement·Mark UlbrichMarian Walter
Oct 3, 2006·Current Opinion in Anaesthesiology·T Kööbi
Aug 26, 2020·Journal of Medical Engineering & Technology·Vu Duy HaiChu Quang Dan
Jan 1, 2013·Journal of Medical Engineering·Fei YangRobert Patterson
Dec 20, 2018·Annals of Biomedical Engineering·Sanna HalonenJari Hyttinen
Jan 11, 2000·Journal of Medical Engineering & Technology·P KauppinenJ Malmivuo
Jun 8, 2002·Physiological Measurement·A E HoetinkR M Heethaar

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