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Ann Thorac Surg 2008;85:530-535. doi:10.1016/j.athoracsur.2007.08.050
© 2008 The Society of Thoracic Surgeons
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Michel Carrier
Michel Pellerin
Denis Bouchard
Louis P. Perrault
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Original Articles: Cardiovascular

Effect of Pericardial Blood Processing on Postoperative Inflammation and the Complement Pathways

Bertrand Marcheix, MD, MS, Michel Carrier, MD*, Catherine Martel, MS, Mariève Cossette, MD, Michel Pellerin, MD, Denis Bouchard, MD, Louis P. Perrault, MD, PhD

Departments of Cardiovascular Surgery and Biostatistics, Biomedical Laboratory, Montreal Heart Institute and University of Montreal, Montreal, Quebec, Canada

Accepted for publication August 22, 2007.

* Address correspondence to Dr Carrier, Department of Surgery, Montreal Heart Institute, 5000 Belanger Street, Montreal, PQ H1T 1C8, Canada (Email: michel.carrier{at}icm-mhi.org).

Background: The objective of the present study was to determine the effect of processing of pericardial blood with a cell-saving device (CS) and vacuum-assisted cardiopulmonary bypass (VACPB) on reduction of postoperative inflammation.

Methods: One hundred patients who underwent on-pump coronary artery bypass grafting surgery were included in a prospective randomized study. Patients were randomly assigned into four groups of 25 patients, each in a two-by-two factorial design: group A had no CS and no VACPB, group B had VACPB alone, group C had CS alone, and group D had CS and VACPB. The complement factors C4a, C3a, and C5a, and the terminal complex sC5b-9, MBL (mannose-binding lectin), and Bb were measured in plasma preoperatively and at 30 and 240 minutes after termination of CPB.

Results: Mean age, CPB, and aortic cross-clamping times were similar in all groups. At 30 and 240 minutes after CPB, C3a, sC5b-9, and Bb were increased and C5a and MBL levels were decreased compared with preoperative levels in all groups. At 240 minutes, Bb levels were lower in patients with CS (p = 0.0002).

Conclusions: The present study shows that contemporary CPB remains associated with a striking activation of all complement pathways and its terminal component. The use of CS decreases the activation of the complement alternative pathway.






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