Hydrodynamic characteristics of artificial lungs

An artificial lung is used during cardiopulmonary bypass to oxygenate blood and to control blood temperature. The pressure drop-flow rate characteristics of the membrane compartment in three hollow fiber membrane oxygenators were determined in vitro to characterize design features. Results are prese...

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Bibliographic Details
Published inASAIO journal (1992) Vol. 46; no. 5; p. 532
Main Authors Dierickx, P W, De Somer, F, De Wachter, D S, Van Nooten, G, Verdonck, P R
Format Journal Article
LanguageEnglish
Published United States 01.09.2000
Subjects
Artificial Organs
Cardiopulmonary Bypass
Humans
Lung
Oxygenators, Membrane
Regression Analysis
Viscosity
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Summary:An artificial lung is used during cardiopulmonary bypass to oxygenate blood and to control blood temperature. The pressure drop-flow rate characteristics of the membrane compartment in three hollow fiber membrane oxygenators were determined in vitro to characterize design features. Results are presented in a unique dimensionless relationship between Euler number, N(Eu) (ratio of pressure drop to kinetic energy), and Reynolds number, N(Re) (ratio of inertial to viscous forces), and are a function of the device porosity, epsilon, and a characteristic device length, xi, defined as the ratio of the mean blood path and manifold length: [equation in text]. This dimensionless approach allows us (1) to compare oxygenators independently, and (2) to relate water tests to blood.
ISSN:1058-2916
DOI:10.1097/00002480-200009000-00004