Document Detail

Erroneous diagnosis of significant obstruction by Doppler in a patient with discrete subaortic membrane: correct diagnosis by 3D-transthoracic echocardiography.
MedLine Citation:
PMID:  18771551     Owner:  NLM     Status:  MEDLINE    
We report an adult with a discrete subaortic membrane in whom two-dimensional transthoracic Doppler echocardiography demonstrated peak and mean gradients of 64 and 33 mmHg, respectively in the left ventricular outflow tract (LVOT) and a calculated orifice area by continuity equation of 1.14 cm(2) consistent with significant obstruction. However, by direct en face visualization of the LVOT at the level of the membrane by live/real time three-dimensional transthoracic echocardiography (3D TTE), a larger orifice measuring 2.29 cm(2) was seen and was indicative of no significant obstruction. This finding was confirmed at cardiac catheterization, which showed insignificant obstruction.
Naveen Bandarupalli; Michael Faulkner; Navin C Nanda; Koteswara R Pothineni
Publication Detail:
Type:  Case Reports; Journal Article     Date:  2008-09-02
Journal Detail:
Title:  Echocardiography (Mount Kisco, N.Y.)     Volume:  25     ISSN:  1540-8175     ISO Abbreviation:  Echocardiography     Publication Date:  2008 Oct 
Date Detail:
Created Date:  2008-11-06     Completed Date:  2009-02-02     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8511187     Medline TA:  Echocardiography     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1004-6     Citation Subset:  IM    
Division of Cardiovascular Diseases, University of Alabama at Birmingham, Birmingham, Alabama 35249, USA.
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MeSH Terms
Aorta / ultrasonography*
Aortic Valve Stenosis / ultrasonography*
Diagnostic Errors / prevention & control*
Echocardiography / methods*
Echocardiography, Doppler / methods*
Echocardiography, Three-Dimensional / methods*

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