Document Detail

A proposed mechanism for transient increases in arterial pressure and flow during angiographic injections.
MedLine Citation:
PMID:  711394     Owner:  NLM     Status:  MEDLINE    
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.
G L Wolf; D D Shaw; H A Baltaxe; K Kilzer; L Kraft
Related Documents :
20427974 - Extracorporeal fluid removal in heart failure patients.
902494 - Relation between lowered colloid osmotic pressure, respiratory failure, and death.
11086774 - Resuscitation of severe thermal injury with hypertonic saline dextran: effects on perip...
3976794 - Peripartum colloid osmotic pressure changes: effects of controlled fluid management.
20167874 - Upper esophageal sphincter during transient lower esophageal sphincter relaxation: effe...
8054774 - Hepatic regeneration following right lobectomy: estimation of regenerative capacity.
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    
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Angiography / methods*
Blood Flow Velocity
Blood Pressure
Catheterization / instrumentation*
Contrast Media / administration & dosage
Femoral Artery
Injections, Intravenous
Injections, Jet
Models, Biological
Reg. No./Substance:
0/Contrast Media

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

Previous Document:  A simple method to measure mesenteric arteriovenous shunt flow during arteriography.
Next Document:  Transcatheter embolization with microfibrillar collagen in swine.