Document Detail


Duplex Doppler ultrasound examination of the portal venous system: an emerging novel technique for the estimation of portal vein pressure.
MedLine Citation:
PMID:  19629688     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
PURPOSE: Measurement of portal venous pressure in patients with portal hypertension is important to assess efficacy of beta blockers in patients with esophageal varices. Currently, the gold standard for measurement of portal venous pressure is the estimation of hepatic venous pressure gradient (HVPG). Being an invasive technique, serial measurements of HVPG are not feasible in clinical practice. In this respect, duplex Doppler ultrasound (DDUS) examination is an upcoming non-invasive technique for the estimation of portal venous and splanchnic hemodynamics. The aim of the present review is to analyze the current literature focusing on how the two techniques compare to each other in terms of assessing the portal pressure and assessing pitfalls in the current technique. RESULTS: Duplex Doppler ultrasound (DDUS) currently has limitations in measuring the portal pressure in a non-invasive way. Hemodynamic venous and arterial indices measured on DDUS correlate with the HVPG. The technique has been refined, however, there is no uniform surrogate marker that can be used in clinical practice. CONCLUSIONS: More studies are needed in order to remove the shortcomings in the current technique. The target is to be able to measure the actual portal pressure or at least derive an ideal venous or arterial hemodynamic surrogate marker having close correlation with the HVPG.
Authors:
Ashwani K Singal; Masood Ahmad; Roger D Soloway
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Publication Detail:
Type:  Journal Article; Review     Date:  2009-07-23
Journal Detail:
Title:  Digestive diseases and sciences     Volume:  55     ISSN:  1573-2568     ISO Abbreviation:  Dig. Dis. Sci.     Publication Date:  2010 May 
Date Detail:
Created Date:  2010-05-04     Completed Date:  2010-06-17     Revised Date:  2010-07-07    
Medline Journal Info:
Nlm Unique ID:  7902782     Medline TA:  Dig Dis Sci     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1230-40     Citation Subset:  AIM; IM    
Affiliation:
Division of Gastroenterology, Department of Internal Medicine, University of Texas Medical Branch, 301 Univ Blvd, Galveston, TX 77555-0764, USA. aksingal@utmb.edu
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MeSH Terms
Descriptor/Qualifier:
Catheterization
Hemodynamics
Humans
Hypertension, Portal / physiopathology,  ultrasonography*
Portal System / physiopathology,  ultrasonography*
Ultrasonography, Doppler, Duplex*
Comments/Corrections
Erratum In:
Dig Dis Sci. 2010 Jun;55(6):1808

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


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