Document Detail


Echo/Doppler evaluation of hemodynamics after aortic valve replacement: principles of interrogation and evaluation of high gradients.
MedLine Citation:
PMID:  20223428     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Echocardiography/Doppler is the standard clinical tool for the assessment of hemodynamics after aortic valve replacement. Analysis can include mean and peak transvalvular gradients, dimensionless valve index, effective orifice area from the continuity equation, geometric orifice area from planimetry, and energy loss coefficient. High gradients after aortic valve replacement can be, but are not necessarily, caused by left ventricular outflow obstruction; and not all left ventricular outflow obstruction after aortic valve replacement is due to prosthesis dysfunction. Understanding the methods by which echocardiography and Doppler are used to noninvasively assess aortic valve hemodynamics, and the caveats associated with those methods, can help the clinician distinguish obstructive from nonobstructive causes of high gradients, and prosthesis dysfunction from other causes of obstruction.
Authors:
David S Bach
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Publication Detail:
Type:  Journal Article; Review    
Journal Detail:
Title:  JACC. Cardiovascular imaging     Volume:  3     ISSN:  1876-7591     ISO Abbreviation:  JACC Cardiovasc Imaging     Publication Date:  2010 Mar 
Date Detail:
Created Date:  2010-03-12     Completed Date:  2010-06-10     Revised Date:  2011-10-24    
Medline Journal Info:
Nlm Unique ID:  101467978     Medline TA:  JACC Cardiovasc Imaging     Country:  United States    
Other Details:
Languages:  eng     Pagination:  296-304     Citation Subset:  IM    
Copyright Information:
Copyright 2010 American College of Cardiology Foundation. Published by Elsevier Inc. All rights reserved.
Affiliation:
Department of Internal Medicine, Division of Cardiovascular Medicine, University of Michigan, Ann Arbor, Michigan 48109-5853, USA. dbach@umich.edu
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MeSH Terms
Descriptor/Qualifier:
Algorithms
Aortic Valve / physiopathology,  surgery*,  ultrasonography*
Echocardiography, Doppler*
Heart Valve Prosthesis
Heart Valve Prosthesis Implantation* / adverse effects,  instrumentation
Hemodynamics*
Humans
Models, Cardiovascular
Predictive Value of Tests
Prosthesis Failure
Time Factors
Treatment Outcome
Comments/Corrections
Erratum In:
JACC Cardiovasc Imaging. 2011 Sep;4(9):1052

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


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