| Effect of flow on the resistance of modelled femoral artery stenoses. | |
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MedLine Citation:
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PMID: 8813786 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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An accurate model of the pressure-flow relationship of a stenosis is necessary for the correct interpretation of haemodynamic measurements. Modelled femoral artery stenoses were tested in vitro and the pressure drop: flow ratio (resistance) was most accurately represented by a fixed component (Rf) combined with a variable component (Rv) that increased linearly with flow (Q) such that Rv = SvQ. For stenoses of 68-94 per cent area, Rf increased from 3.2 to 77.7 milliperipheral resistance units (mPRU), while Sv increased from 0.009 to 0.578 mPRU ml-1 min and Rv was dominant for physiological flow rates. It was concluded that the approximation of a significant stenosis to a fixed resistance is incorrect. |
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Authors:
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S R Dodds; N K Bourne; A D Chant |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: The British journal of surgery Volume: 83 ISSN: 0007-1323 ISO Abbreviation: Br J Surg Publication Date: 1996 Jul |
Date Detail:
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Created Date: 1996-10-22 Completed Date: 1996-10-22 Revised Date: 2004-11-17 |
Medline Journal Info:
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Nlm Unique ID: 0372553 Medline TA: Br J Surg Country: ENGLAND |
Other Details:
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Languages: eng Pagination: 957-61 Citation Subset: AIM; IM |
Affiliation:
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Department of Vascular Surgery, Royal South Hants Hospital, Southampton, UK. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Blood Flow Velocity Blood Pressure / physiology Constriction, Pathologic / physiopathology Femoral Artery / physiopathology* Humans Models, Biological Peripheral Vascular Diseases / pathology, physiopathology Vascular Resistance / physiology* |
| Comments/Corrections | |
Comment In:
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Br J Surg. 1997 Feb;84(2):279-81
[PMID:
9052458
]
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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