European Journal of Anaesthesiology



Original Article
(RD) Surgery

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


W. Buhre a1c1, A. Weyland a1, B. Schorn a2, M. Scholz a3, S. Kazmaier a1, A. Hoeft a3 and H. Sonntag a1
a1 Zentrum Anaesthesiologie, Rettungs-und Intensivmedizin, Universität Gottingen, Robert-Koch-Str. 40, D-37075 Göttingen, Germany
a2 Klinik und Poliklinik für Herz-, Thorax- und Gefässchirurgie der Universität Gottingen, Robert-Koch-Str. 40, D-37075 Göttingen, Germany
a3 Klinik für Anästhesiologie und spezielle Intensivmedizin der Universität Bonn, Sigmund Freud Str. 25, D-53105 Bonn, Germany

Article author query
buhre w   [PubMed][Google Scholar] 
weyland a   [PubMed][Google Scholar] 
schorn b   [PubMed][Google Scholar] 
scholz m   [PubMed][Google Scholar] 
kazmaier s   [PubMed][Google Scholar] 
hoeft a   [PubMed][Google Scholar] 
sonntag h   [PubMed][Google Scholar] 

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.

(Published Online August 16 2006)
(Accepted July 1998)


Key Words: cardiac surgery; indicator dilution technique; cardiac volume indices; central blood volume.

Correspondence:
c1 Correspondence: W. Buhre.