Accuracy and reliability of non-invasive cardiac output: the future in cardiology?

Author

Faddy, S. ; Boland, J. ; Muller, Dwm

Author_Institution

St. Vincent´´s Hosp., Sydney, NSW, Australia

fYear

2003

fDate

21-24 Sept. 2003

Firstpage

251

Lastpage

253

Abstract

A new generation of non-invasive cardiac output monitors provides an alternative to using conventional invasive methods such as thermodilution and direct Fick. The Bioz.com measures changes in thoracic electrical bioimpedance (TEB) of the descending aorta. The Innocor uses the principle of inert gas rebreathing. Simultaneous TEB and thermodilution cardiac output measurements were taken from 27 patients undergoing right heart catheterisation. Linear regression analysis showed good correlation between thermodilution and TEB about the line y = 0.85x + 0.63 (r = 0.91, P<0.0001). Preliminary data from the Innocor suggest comparable accuracy, continuous monitoring, portability, ease of use and low cost for a variety of applications in cardiology.

Keywords

bioelectric phenomena; cardiovascular system; catheters; medical diagnostic computing; patient monitoring; regression analysis; Bioz.com; Innocor; aorta; cardiology; direct Fick; inert gas rebreathing; linear regression analysis; noninvasive cardiac output monitors; right heart catheterisation; thermodilution cardiac output measurements; thoracic electrical bioimpedance; Bioimpedance; Cardiology; Catheterization; Electric variables measurement; Heart; Hospitals; Instruments; Lungs; Patient monitoring; Regression analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

Computers in Cardiology, 2003

ISSN

0276-6547

Print_ISBN

0-7803-8170-X

Type

conf

DOI

10.1109/CIC.2003.1291138

Filename

1291138