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Changes in central venous pressure and pulmonary capillary wedge pressure do not indicate changes in right and left heart volume in patients undergoing coronary artery bypass surgery

Published online by Cambridge University Press:  16 August 2006

W. Buhre ,
A. Weyland ,
B. Schorn ,
M. Scholz ,
S. Kazmaier ,
A. Hoeft  and
H. Sonntag
W. Buhre
Affiliation:
Zentrum Anaesthesiologie, Rettungs-und Intensivmedizin, Universität Gottingen, Robert-Koch-Str. 40, D-37075 Göttingen, Germany
A. Weyland
Affiliation:
Zentrum Anaesthesiologie, Rettungs-und Intensivmedizin, Universität Gottingen, Robert-Koch-Str. 40, D-37075 Göttingen, Germany
B. Schorn
Affiliation:
Klinik und Poliklinik für Herz-, Thorax- und Gefässchirurgie der Universität Gottingen, Robert-Koch-Str. 40, D-37075 Göttingen, Germany
M. Scholz
Affiliation:
Klinik für Anästhesiologie und spezielle Intensivmedizin der Universität Bonn, Sigmund Freud Str. 25, D-53105 Bonn, Germany
S. Kazmaier
Affiliation:
Zentrum Anaesthesiologie, Rettungs-und Intensivmedizin, Universität Gottingen, Robert-Koch-Str. 40, D-37075 Göttingen, Germany
A. Hoeft
Affiliation:
Klinik für Anästhesiologie und spezielle Intensivmedizin der Universität Bonn, Sigmund Freud Str. 25, D-53105 Bonn, Germany
H. Sonntag
Affiliation:
Zentrum Anaesthesiologie, Rettungs-und Intensivmedizin, Universität Gottingen, Robert-Koch-Str. 40, D-37075 Göttingen, Germany
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Abstract

The value of pulmonary artery catheterization is a matter for discussion. Previous studies suggest that direct measurements of intravascular volume distribution and cardiac volume indices may be of greater relevance than central venous and pulmonary capillary wedge pressure. We therefore used a thermo-dye dilution technique for the quantification of central blood volume, right ventricular end-diastolic volume and left heart volume in patients undergoing coronary artery bypass surgery. Measurements were performed after the induction of anaesthesia as well as 1, 6 and 24 h after surgery. Central venous pressure was significantly increased at 1 and 6 h, whereas right ventricular end-diastolic volume was increased only at 6 h post-operatively. Pulmonary capillary wedge pressure showed a tendency to increase whereas left heart and central blood volume decreased significantly after surgery. The results of the present study suggest that changes in cardiac filling pressure do not indicate changes in indices of cardiac volume in patients after coronary bypass surgery.

Keywords

cardiac surgeryindicator dilution techniquecardiac volume indicescentral blood volume
Type
Original Article
Information
European Journal of Anaesthesiology , Volume 16 , Issue 1 , January 1999 , pp. 11 - 17
Copyright
1999 European Society of Anaesthesiology

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