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Gonzalo de la Morena, Daniel Saura, María J. Oliva, Federico Soria, Josefa González, Miguel García, Victoria Moreno, Juan C. Bonaque, Mariano Valdés, Real-time three-dimensional transoesophageal echocardiography in the assessment of aortic valve stenosis, European Journal of Echocardiography, Volume 11, Issue 1, January 2010, Pages 9–13, https://doi.org/10.1093/ejechocard/jep154
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Abstract
To determine the feasibility of real-time three-dimensional transoesophageal echocardiography (3D-TOE) in the evaluation of aortic valve stenosis, to study its reliability, and to test the concordance of this new method when compared with transthoracic two-dimensional echocardiography (2D-TTE) as the diagnostic standard.
Fifty-nine consecutive patients with moderate-to-severe aortic valve stenosis were assessed by means of 2D-TTE and 3D-TOE by independent blinded observers. Aortic valve planimetry was possible in 94.9% of patients. Inter-observer intraclass correlation coefficients (ICC) were 0.892 (CI 95% 0.818–0.936; P < 0.001), and 0.871 (CI 95% 0.780–0.925; P < 0.001) for 2D-TTE and 3D-TOE, respectively. Bland-Altman plot showed a mean difference in aortic valve area (AVA) of 0.040 cm 2 , with 2D-TTE yielding larger values than 3D-TOE. ICC of both methods was 0.724 (CI 95% 0.530–0.839; P < 0.001).
Assessment of AVA by means of 3D-TOE is feasible in most patients with aortic valve stenosis. Reliability of the measurement is good. However, there is some disagreement with standard 2D-TTE that needs further investigation.