Key result
Three-dimensional transesophageal echocardiography measurement of vena contracta area showed high inter- and intra-observer reproducibility (0.92 and 0.97, respectively) for grading severe aortic regurgitation.
Why the study?
Does three-dimensional transesophageal echocardiography measurement of vena contracta area accurately assess the severity of aortic regurgitation compared to standard methods?
Observational (n=62)
Does three-dimensional transesophageal echocardiography measurement of vena contracta area accurately assess the severity of aortic regurgitation compared to standard methods?
3D TEE measurement of vena contracta area demonstrates high reproducibility and offers a valuable alternative for assessing aortic regurgitation severity when standard TTE is insufficient.
May support 3D TEE vena contracta area when TTE is inadequate; leaves open accuracy versus reference standards.
PURPOSE: Transthoracic echocardiography (TTE) provides noninvasively quantitative assessment of aortic regurgitation (AR) severity, but its diagnostic accuracy depends on image quality. Two-dimensional transesophageal echocardiography (TEE) is a semi-invasive procedure that is excellent in evaluating AR mechanism. However, quantitative assessment may be challenging due to restrictions in probe manipulation. This study aimed to investigate the diagnostic value of three-dimensional TEE to measure the vena contracta area (3DVCA) of AR. METHODS: The subjects comprised 62 patients (age, 65 ± 16 years) whose AR was evaluated using TEE. The 3DVCA and semi-quantitative TEE parameters, such as the ratio of AR jet width to left ventricular outflow tract (jet/LVOT) and the vena contracta width (VCW) of AR jet, were compared using angiography grade and quantitative TTE measurements including regurgitant volume (RVol) and effective regurgitant orifice area (EROA). The diagnostic accuracy was determined using receiver operating characteristic (ROC) analysis, and the reproducibility of 3DVCA was also evaluated. RESULTS: for grading severe AR. Inter- and intra-observer reproducibility of 3DVCA were .92 and .97, respectively. CONCLUSIONS: The 3DVCA method using TEE showed high diagnostic accuracy and reproducibility. 3DVCA deserves use in accurately assessing AR severity, especially in patients who present difficulty in quantitative Doppler assessment using TTE.
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Yanagi et al. (2021) conducted an observational in Aortic regurgitation (n=62). Three-dimensional transesophageal echocardiography (3D TEE) vena contracta area (3DVCA) measurement vs. Angiography grade and quantitative TTE measurements was evaluated on Diagnostic accuracy and reproducibility for grading severe aortic regurgitation. Three-dimensional transesophageal echocardiography measurement of vena contracta area showed high inter- and intra-observer reproducibility (0.92 and 0.97, respectively) for grading severe aortic regurgitation.
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