Quantitation of aortic valve area in aortic stenosis with multiplane transesophageal echocardiography: Comparison with monoplane transesophageal approach
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Cited by (58)
Three-dimensional imaging of the left ventricular outflow tract: Impact on aortic valve area estimation by the continuity equation
2012, Journal of the American Society of EchocardiographyThe role of echocardiography in the evaluation and management of aortic stenosis in the older adult
2012, International Journal of CardiologyCitation Excerpt :In older adults the prevalence of severely calcified valvular cusps which cause acoustic shadowing and interfere with visualization using 2DTEE in addition to anatomical variations caused by a dilated or obliquely placed aorta is increased [33]. Another limitation faced by 2DTEE is the inability to ensure that the imaging plane is aligned perpendicular to the plane of the orifice [34,35]. Since this depends on the relationship of the probe in the esophagus and the aortic root, which is fixed in a particular individual but variable from one person to another, it is technically difficult to ensure that the imaging plane is parallel to the plane of the orifice.
Aortic Stenosis Quantitation
2010, Dynamic EchocardiographyUnanticipated Mild-to-Moderate Aortic Stenosis During Coronary Artery Bypass Graft Surgery: Scope of the Problem and Its Echocardiographic Evaluation
2009, Journal of Cardiothoracic and Vascular AnesthesiaCitation Excerpt :However, there are limitations to the various echocardiographic techniques used for this purpose of which the echocardiographer should be aware.22 With the introduction of transesophageal echocardiography (TEE), the assessment of AVA by planimetry was found to be a quick and simple method of the assessment of AS severity.23-25 Initial attempts at the delineation of the AVA with planimetry were made by using a monoplane probe and then a multiplane transesophageal echocardiographic probe and showed acceptable correlations with invasive methods.26,27
Direct measurement of left ventricular outflow tract by transthoracic real-time 3D-echocardiography increases accuracy in assessment of aortic valve stenosis
2009, International Journal of CardiologyCitation Excerpt :In patients with impaired left ventricular function resulting in decreased validity of pressure gradient measurements, non-invasive determination of the degree of aortic valvular stenosis according to the continuity equation may be superior, especially since planimetric measurement of aortic valvular areas is affected by actual transvalvular flow [24–26]. Transesophageal echocardiography provides a good acoustic window and thus superior image resolution which allows accurate direct measurement in many patients by multiplane [27,28] and three-dimensional approach [29,30]. However, transesophageal approach is also subject to limitations like artifacts arising from severe calcification and the choice of the cut-plane which substantially influences the resulting aortic valvular orifice.
Aortic Stenosis
2009, Valvular Heart Disease: A Companion to Braunwalds Heart Disease Expert Consult - Online and Print