TITLE

Comparison of the inflammatory response between miniaturized and standard CPB circuits in aortic valve surgery

AUTHOR(S)
Bical, Olivier M.; Fromes, Yves; Gaillard, Didier; Fischer, Marc; Ponzio, Olivier; Deleuze, Philippe; Gerhardt, Marie-Françoise; Trivin, François
PUB. DATE
May 2006
SOURCE
European Journal of Cardio-Thoracic Surgery;May2006, Vol. 29 Issue 5, p699
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Abstract: Objective: One of the complications of CPB is the systemic inflammatory response syndrome (SIRS). Recent developments tend to minimize the biological impact of CPB in using miniaturized closed circuit with reduced priming volume and less blood–air interface. The benefit of these miniaturized closed circuits in terms of inflammatory response has been proved in coronary surgery. However, in open heart surgery, the CPB circuit is no more closed and the benefit of the miniaturized set-up could disappear. The aim of the study is to compare the SIRS between standard and miniaturized circuits in aortic surgery. Methods: Forty patients who underwent singular aortic valve replacement were randomly assigned either to a standard CPB (group A, n =20) or to a miniaturized CPB (group B, n =20). Pertinent clinical and surgical data were collected. Hematological parameters (leukocyte and neutrophil counts) and biochemical parameters (C-reactive protein, cytokine tests) were determined pre-, on and post-CPB. Results: There were an increase in leukocyte and neutrophil counts and a decline in hematocrit in both groups. In both groups, there was a raise after CPB, in C-reactive protein, IL-6, TNF-α, neutrophil elastase, and IL-10. However, the raises of elastase and TNF-α were significantly lower after the weaning of miniaturized CPB (116±46ng/ml and 10±4pg/ml, respectively) compared to standard CPB (265±120ng/ml, P =0.01 and 18±7pg/ml, P =0.03). The raise of IL-10 is also lower with miniaturized circuit (15±6pg/ml) compared to standard circuit (51±26, P =0.004). Conclusions: This study demonstrates in aortic surgery, the lesser inflammatory response of a miniaturized CPB compared to a standard CPB. However, there is always some inflammation after CPB and a small bio-reactive free perfusion circuit is still to be found in open heart surgery.
ACCESSION #
20623223

 

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