Document Detail


A proposed mechanism for transient increases in arterial pressure and flow during angiographic injections.
MedLine Citation:
PMID:  711394     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
In a series of animal experiments, we have confirmed the observation that arterial pressure and flow increase distal to the injection site during power injections through non-obstructing catheters. Our data suggest that the phenomenon is secondary to the transient production of turbulence. Thus, for a given injection rate, catheters with smaller end holes create more fluid velocity, which increases the Reynolds number and causes augmentation of downstream pressure and flow. The addition of side holes decreases the fluid velocity of the injectate and minimizes the hemodynamic effects. The discussion deals with factors contributing to the generation of local turbulence, the magnitude of pressure and flow changes caused by the injections, and the clinical implications of these artifacts.
Authors:
G L Wolf; D D Shaw; H A Baltaxe; K Kilzer; L Kraft
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Publication Detail:
Type:  Comparative Study; Journal Article    
Journal Detail:
Title:  Investigative radiology     Volume:  13     ISSN:  0020-9996     ISO Abbreviation:  Invest Radiol     Publication Date:    1978 May-Jun
Date Detail:
Created Date:  1979-01-26     Completed Date:  1979-01-26     Revised Date:  2009-11-11    
Medline Journal Info:
Nlm Unique ID:  0045377     Medline TA:  Invest Radiol     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  195-9     Citation Subset:  IM    
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MeSH Terms
Descriptor/Qualifier:
Angiography / methods*
Animals
Blood Flow Velocity
Blood Pressure
Catheterization / instrumentation*
Contrast Media / administration & dosage
Dogs
Femoral Artery
Injections, Intravenous
Injections, Jet
Models, Biological
Chemical
Reg. No./Substance:
0/Contrast Media

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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