Document Detail

Comparison of Left Ventricular Outflow Geometry and Aortic Valve Area in Patients With Aortic Stenosis by 2-Dimensional Versus 3-Dimensional Echocardiography.
MedLine Citation:
PMID:  22440128     Owner:  NLM     Status:  Publisher    
The present study sought to elucidate the geometry of the left ventricular outflow tract (LVOT) in patients with aortic stenosis and its effect on the accuracy of the continuity equation-based aortic valve area (AVA) estimation. Real-time 3-dimensional transesophageal echocardiography (RT3D-TEE) provides high-resolution images of LVOT in patients with aortic stenosis. Thus, AVA is derived reliably with the continuity equation. Forty patients with aortic stenosis who underwent 2-dimensional transthoracic echocardiography (2D-TTE), 2-dimensional transesophageal echocardiography (2D-TEE), and RT3D-TEE were studied. In 2D-TTE and 2D-TEE, the LVOT areas were calculated as π × (LVOT dimension/2)(2). In RT3D-TEE, the LVOT areas and ellipticity ([diameter of the anteroposterior axis]/[diameter of the medial-lateral axis]) were evaluated by planimetry. The AVA is then determined using planimetry and the continuity equation method. LVOT shape was found to be elliptical (ellipticity of 0.80 ± 0.08). Accordingly, the LVOT areas measured by 2D-TTE (median 3.7 cm(2), interquartile range 3.1 to 4.1) and 2D-TEE (median 3.7 cm(2), interquartile range 3.1 to 4.0) were smaller than those by 3D-TEE (median 4.6 cm(2), interquartile range 3.9 to 5.3; p <0.05 vs both 2D-TTE and 2D-TEE). RT3D-TEE yielded a larger continuity equation-based AVA (median 1.0 cm(2), interquartile range 0.79 to 1.3, p <0.05 vs both 2D-TTE and 2D-TEE) than 2D-TTE (median 0.77 cm(2), interquartile range 0.64 to 0.94) and 2D-TEE (median 0.76 cm(2), interquartile range 0.62 to 0.95). Additionally, the continuity equation-based AVA by RT3D-TEE was consistent with the planimetry method. In conclusion, RT3D-TEE might allow more accurate evaluation of the elliptical LVOT geometry and continuity equation-based AVA in patients with aortic stenosis than 2D-TTE and 2D-TEE.
Takeji Saitoh; Maiko Shiota; Masaki Izumo; Swaminatha V Gurudevan; Kirsten Tolstrup; Robert J Siegel; Takahiro Shiota
Related Documents :
24332668 - Impact of pre-stage ii hemodynamics and pulmonary artery anatomy on 12-month outcomes i...
23643478 - Nonaneurysmal subarachnoid hemorrhage after udenafil intake.
761108 - Pulmonary atelectasis and other respiratory complications after cardiopulmonary bypass ...
24497808 - Time-of-flight magnetic resonance angiography for follow-up of coil embolization with e...
19943568 - Vagal paraganglioma: imaging versus intraoperative findings.
24963308 - Stent underexpansion in angiographic guided percutaneous coronary intervention, despite...
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-3-20
Journal Detail:
Title:  The American journal of cardiology     Volume:  -     ISSN:  1879-1913     ISO Abbreviation:  -     Publication Date:  2012 Mar 
Date Detail:
Created Date:  2012-3-23     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0207277     Medline TA:  Am J Cardiol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2012 Elsevier Inc. All rights reserved.
Cedars-Sinai Heart Institute, Cedars-Sinai Medical Center, and UCLA, Los Angeles, California.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms

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

Previous Document:  Recessively Inherited Severe Aortic Aneurysm Caused by Mutated EFEMP2.
Next Document:  Effect of Type of Atrial Fibrillation on Prognosis in Acute Myocardial Infarction Treated Invasively...