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Blood-Air Interface during Cardiopulmonary Bypass

Heartcenter Ludwigshafen, Cardiac Surgery, Klinikum Ludwigshafen, Germany

For reprint information contact: Arndt-H Kiessling, Tel: 49 621 503 4050, Fax: 49 621 503 4060, Email: kiesslia{at}klilu.de Klinik für Herzchirurgie, Herzzentrum Ludwigshafen, Bremserstr. 79, 67063 Ludwigshafen, Germany.

The aim of this study was to compare the systemic blood activation with open and closed perfusion management during cardiopulmonary bypass. In 30 patients undergoing coronary artery bypass grafting, we prospectively studied systemic blood activation, blood loss and the need for donor blood. In 15 patients we used an open venous reservoir consisting of a hard shell venous reservoir with an integrated cardiotomy filter. In another 15 patients we used a totally closed venous reservoir consisting of a collapsible venous reservoir, no coronary suction, modified vent and cell saver. Venous blood samples were collected pre, post and 24 hours postoperatively. Sex, age and perfusion times were identical in both groups. There were no statistically significant differences in concentrations of FXIIa and C3a, amount of blood loss and need for donor blood. Interleukin-6 and Elastase levels showed trends toward a lesser inflammatory reaction in closed venous reservoir patients. Modification of perfusion management with optimized air management does not seem to be an effective strategy in reducing the inflammatory response and influencing the coagulation system in this small cohort.

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