Document Detail


Pressure drop through generic lumens of hemodialysis catheters.
MedLine Citation:
PMID:  17667226     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
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.
Authors:
Zachary P Fricker; Donald O Rockwell
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Publication Detail:
Type:  Journal Article    
Journal Detail:
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:
Created Date:  2007-08-01     Completed Date:  2007-09-04     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9204109     Medline TA:  ASAIO J     Country:  United States    
Other Details:
Languages:  eng     Pagination:  428-33     Citation Subset:  IM    
Affiliation:
Department of Mechanical Engineering and Mechanics, Lehigh University, Bethlehem, Pennsylvania 18015, USA.
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MeSH Terms
Descriptor/Qualifier:
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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