Mapping the cardiogenic impedance signal on the thorax

Author

Patterson, R. ; Wang, L. ; Raza, B. ; McVeigh, G. ; Burns, R.

Author_Institution

Minnesota Univ., Minneapolis, MN, USA

fYear

1989

fDate

9-12 Nov 1989

Firstpage

1237

Abstract

The cardiogenic electrical impedance signal was mapped on the anterior surface of the thorax. Using spot electrodes to pick up the impedance signal between the suprasternal notch and a point 10 cm below, stroke volume (SV) was measured with postural change and during 50-W bicycle exercise. The mapping showed that approximately 80% of the signal comes from the upper thorax. The impedance SV measured with spot electrodes showed poor agreement with results obtained with the dye dilution method during position change and exercise. The results suggest that the signal has multiple origins and that spot electrodes cannot simply be used to replace band electrodes without great care

Keywords

bioelectric phenomena; biomechanics; biomedical measurement; cardiology; anterior surface; bicycle exercise; cardiogenic electrical impedance signal; dye dilution method; mapping; postural change; spot electrodes; stroke volume; suprasternal notch; upper thorax; Bicycles; Biomedical electrodes; Cardiology; Impedance measurement; Neck; Position measurement; Signal mapping; Surface impedance; Thorax; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Engineering in Medicine and Biology Society, 1989. Images of the Twenty-First Century., Proceedings of the Annual International Conference of the IEEE Engineering in

Conference_Location

Seattle, WA

Type

conf

DOI

10.1109/IEMBS.1989.96172

Filename

96172