| Pressure drop through generic lumens of hemodialysis catheters. | |
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MedLine Citation:
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PMID: 17667226 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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A unique, air-based system has been developed and implemented for rapid and accurate determination of pressure drop versus flow rate characteristics of generic catheter lumens; dimensionless scaling parameters can be effectively used to express these characteristics in units of blood flow used in the clinical setting. Theoretical models are compared with experimental data. For flow and geometric parameters of practical importance, the pronounced effect of developing flow in the lumen must be accounted for in calculation of the pressure drop along the lumen. That is, the theory of classical Poiseuille flow substantially underpredicts the pressure drop. Moreover, a side hole can induce significant, and in some cases large, values of pressure drop, even when the area of the hole exceeds the cross-sectional area of the lumen. |
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Authors:
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Zachary P Fricker; Donald O Rockwell |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: ASAIO journal (American Society for Artificial Internal Organs : 1992) Volume: 53 ISSN: 1538-943X ISO Abbreviation: ASAIO J. Publication Date: 2007 Jul-Aug |
Date Detail:
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Created Date: 2007-08-01 Completed Date: 2007-09-04 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9204109 Medline TA: ASAIO J Country: United States |
Other Details:
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Languages: eng Pagination: 428-33 Citation Subset: IM |
Affiliation:
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Department of Mechanical Engineering and Mechanics, Lehigh University, Bethlehem, Pennsylvania 18015, USA. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Catheterization* Equipment Design Flowmeters Humans Models, Theoretical* Pressure* Renal Dialysis / instrumentation* Rheology Transducers, Pressure |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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