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Assessment of cardiac preload by indicator dilution and transoesophageal echocardiography

Published online by Cambridge University Press:  16 August 2006

W. Buhre ,
K. Buhre ,
S. Kazmaier ,
H. Sonntag  and
A. Weyland
W. Buhre
Affiliation:
Rheinisch Westfälische Technische Hochschule Aachen, Georg-August-Universität Göttingen Germany
K. Buhre
Affiliation:
Zentrum Anaesthesiologie Rettungs-und Intensivmedizin, Georg-August-Universität Göttingen Germany
S. Kazmaier
Affiliation:
Zentrum Anaesthesiologie Rettungs-und Intensivmedizin, Georg-August-Universität Göttingen Germany
H. Sonntag
Affiliation:
Zentrum Anaesthesiologie Rettungs-und Intensivmedizin, Georg-August-Universität Göttingen Germany
A. Weyland
Affiliation:
Klinik für Anä sthesie und Intensivmedizin, Städtische Kliniken Oldenburg, Germany
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Abstract

Background and objective Assessment of cardiac preload is of major importance in the management of critically ill patients. Echocardiographic determined left ventricular end-diastolic area and indicator dilution derived intrathoracic blood volume are used as surrogates for cardiac preload. However, no controlled comparison studies on the relationship between induced changes in end-diastolic area and intrathoracic blood volume and concomitant changes in stroke volume index are available.

Methods The effects of a change in body position on these variables were investigated in 10 anaesthetized patients.

Results Intrathoracic blood volume and end-diastolic area decreased by 18 ± 11% and 27 ± 13% respectively. Stroke volume index concomitantly decreased by 19 ± 11%. Correlation analysis revealed a close relation between stroke volume index and intrathoracic blood volume (r = 0.75) and end-diastolic area (r = 0.76).

Conclusions Within the observed range of data, intrathoracic blood volume and end-diastolic area are equivalent indices of cardiac preload.

Keywords

echocardiographyDopplerhaemodynamicscardiac outputcardiac volumestroke volumeindicator dilution techniques
Type
Original Article
Information
European Journal of Anaesthesiology , Volume 18 , Issue 10 , October 2001 , pp. 662 - 667
Copyright
2001 European Society of Anaesthesiology

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