Document Detail

The relationship between dialysis graft pressure and stenosis.
MedLine Citation:
PMID:  1582817     Owner:  NLM     Status:  MEDLINE    
RATIONALE AND OBJECTIVES: Pressure measurements during dialysis have been used to screen for venous outlet stenosis, but the relationship between the degree of stenosis and pressure has not been defined. METHODS: To determine this relationship, failing or failed dialysis grafts (n = 34) were studied with angiography and pressure measurements from the segment of the graft near the arterial anastomosis. RESULTS: By linear regression, the relationship between the highest grade stenosis in or central to the graft and pressure was as follows: percent stenosis = 55 systolic graft pressure/systolic blood pressure+13 (r = 0.75). CONCLUSIONS: There is a positive correlation between the severity of stenosis and graft pressure, confirming the use of this measurement in screening for stenosis. It is hypothesized that this relationship is the result of progressive elimination of the normal pressure drop between the artery and arterial limb of the graft as the degree of stenosis increases.
K L Sullivan; A Besarab; S Dorrell; M J Moritz
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Investigative radiology     Volume:  27     ISSN:  0020-9996     ISO Abbreviation:  Invest Radiol     Publication Date:  1992 May 
Date Detail:
Created Date:  1992-06-17     Completed Date:  1992-06-17     Revised Date:  2010-03-24    
Medline Journal Info:
Nlm Unique ID:  0045377     Medline TA:  Invest Radiol     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  352-5     Citation Subset:  IM    
Department of Radiology, Thomas Jefferson University Hospital, Jefferson Medical College, Philadelphia, Pennsylvania 19107.
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MeSH Terms
Arteriovenous Shunt, Surgical* / statistics & numerical data
Blood Vessel Prosthesis* / statistics & numerical data
Graft Occlusion, Vascular / epidemiology,  physiopathology*,  radiography
Regression Analysis
Renal Dialysis* / statistics & numerical data
Venous Pressure / physiology*

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