Portable impedance cardiography system for real-time noninvasive cardiac output measurement

Author

Chiang, Chia-Yin ; Hu, Wei-Chih ; Shyu, Liang-Yu

Author_Institution

Dept. of Biomed. Eng., Chung Yuan Christian Univ., Chung Li, Taiwan

Volume

5

fYear

1997

fDate

1997

Firstpage

2072

Abstract

A portable impedance cardiography (ICG) system has been developed. It is battery powered, small size, and in-expensive. Only one 9.6 V Ni/Cd battery is needed to operate the system for one and half hours, continuously. In addition, a digital signal processing (DSP) chip (TMS320C50, National Instrumentation Co.) is used for real-time signal processing, event detection, and stroke volume (SV) calculation. Information such as SV, cardiac output (CO), heart rate (HR) and left ventricular ejection time (LVET) are displayed on a 128*64 dot matrix LCD and updated after each heart beat. This system is also capable of storing the above information in the internal SRAM that can be transmitted to the personal computer through an RS232 interface for further analysis, after monitoring

Keywords

bioelectric phenomena; biomedical electronics; biomedical equipment; electric impedance measurement; medical signal processing; 9.6 V; Ni-Cd; Ni/Cd battery; RS232 interface; TMS320C50; cardiac output; event detection; heart rate; left ventricular ejection time; medical instrumentation; personal computer; portable impedance cardiography system; real-time noninvasive cardiac output measurement; real-time signal processing; stroke volume calculation; Batteries; Cardiography; Digital signal processing chips; Event detection; Heart beat; Heart rate; Impedance; Instruments; Random access memory; Real time systems;

fLanguage

English

Publisher

ieee

Conference_Titel

Engineering in Medicine and Biology Society, 1997. Proceedings of the 19th Annual International Conference of the IEEE

Conference_Location

Chicago, IL

ISSN

1094-687X

Print_ISBN

0-7803-4262-3

Type

conf

DOI

10.1109/IEMBS.1997.758757

Filename

758757