Comparison of measurements of cardiac output by bioimpedance and thermodilution in severely ill surgical patients

Critical Care Medicine
P L AppelW C Shoemaker

Abstract

In order to evaluate a new thoracic electrical bioimpedance (TEB) system for measurement of stroke volume based on the Sramek-Bernstein equation, 391 paired values of cardiac output were measured simultaneously with the standard thermodilution method. These values were obtained from 16 patients selected for having the most severe illness during a 6-month period; the intent was to evaluate the bioimpedance method in the worst possible situations. The correlation coefficient (r) was 0.83, slope was 0.87, intercept was 1.53, and the mean difference between the two methods was 16.2 +/- 11.8 (SD)% in the total series. In 285 paired samples where satisfactory conditions were met, r was 0.90, slope was 0.98, intercept was 0.34, and the mean difference was 11.8 +/- 8.9%. The data indicate satisfactory correlations between these two methods. When the TEB waveform is satisfactory, the agreement between TEB and thermodilution is as good as the agreement between serial thermodilution methods. Difficulties may arise with dysrhythmias, tachycardia (heart rate greater than 150 beat/min), metal in the chest or chest wall, sepsis, hypertension, and extremely oily skin. Mechanical ventilation did not appear to be a problem.

Citations

Jan 1, 1992·European Journal of Clinical Pharmacology·S H ThomasS E Smith
Jan 1, 1993·European Journal of Applied Physiology and Occupational Physiology·A Concu, C Marcello
Sep 1, 1991·Clinical Autonomic Research : Official Journal of the Clinical Autonomic Research Society·J S KoonerC J Mathias
Jan 1, 1989·Annals of Biomedical Engineering·R W GotshallD S Miles
Jan 1, 1989·Annals of Biomedical Engineering·J H NagelN Schneiderman
Oct 1, 1990·Canadian Journal of Anaesthesia = Journal Canadien D'anesthésie·R J MartineauK A Hull
Apr 1, 1993·Canadian Journal of Anaesthesia = Journal Canadien D'anesthésie·P J AndrewsM M Juneja
Jul 2, 2011·Clinical Research in Cardiology : Official Journal of the German Cardiac Society·Frederik TrinkmannJoachim Saur
Sep 1, 1994·International Journal of Bio-medical Computing·A C van OppenH W Bruinse
Dec 15, 1994·Journal of the Autonomic Nervous System·P A LowM Camilleri
Jan 12, 2002·Kidney International·John KyriazisIrene Grimani
Jul 9, 1999·Critical Care Medicine·E RaaijmakersR M Heethaar
Nov 9, 2005·Critical Care Medicine·Günter LucknerBarbara Friesenecker
Apr 11, 2008·The Journal of Trauma·George C KramerCharles E Mitchell
Jun 1, 1997·Acta Anaesthesiologica Scandinavica·B J van der MeerP M de Vries
Aug 26, 2004·Kidney International·John KyriazisEkaterini Liolia
Jul 1, 1993·Pacing and Clinical Electrophysiology : PACE·I Ovsyshcher, S Furman
Jul 22, 2011·Anesthesiology Research and Practice·Allison J LeeJ Sudharma Ranasinghe
Jul 1, 2005·Critical Care : the Official Journal of the Critical Care Forum·Ronny Otero, A Joseph Garcia
Dec 7, 2014·Best Practice & Research. Clinical Anaesthesiology·Djordje G JakovljevicGuy A MacGowan
Oct 1, 1996·Intensive Care Medicine·B J van der MeerP M de Vries
Jan 1, 1990·Canadian Journal of Anaesthesia = Journal Canadien D'anesthésie·R TorrielliJ M Mene
Jan 1, 1996·Clinical and Experimental Hypertension : CHE·M A JonesP Sharpstone
Nov 24, 1998·The Journal of Physiology·M J PerkoN H Secher
Sep 1, 1989·American Journal of Obstetrics and Gynecology·D I MasakiJ G Ouzounian
Jan 1, 1990·Psychophysiology·A SherwoodL J van Doornen

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