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1. Pressure drop, shear stress, and activation of leukocytes during cardiopulmonary bypass: A comparison between hollow fiber and flat sheet membrane oxygenators

Author

Gu, YJ, Boonstra, PW, Graaff, R, Rijnsburger, AA, Mungroop, H, van Oeveren, W, and Faculteit Medische Wetenschappen/UMCG

Subjects
oxygenator, leukocytes, ADHESION MOLECULE EXPRESSION, BUBBLE, elastase, LONG PERFUSIONS, REPERFUSION, cardiopulmonary bypass, shear stress, NEUTROPHILS, pressure drop
Abstract

The membrane oxygenator is known to be superior to the bubble oxygenator, but little information is available about the difference between the hollow fiber and flat sheet membrane oxygenators with regard to pressure drop, shear stress, and leukocyte activation. In this study, we compared these 2 types of membrane oxygenators in patients undergoing cardiopulmonary bypass (CPB) surgery with special focus on leukocyte activation and pressure drop across the oxygenators. Plasma concentration of elastase, a marker indicating leukocyte activation, increased to 593 +/- 68% in the flat sheet oxygenator group versus 197 +/- 42% in the hollow fiber oxygenator group (p

Published
2000

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