Grossmann Georg, Wöhrle Jochen, Kochs Matthias, Giesler Martin, Hombach Vintenz, Höher Martin
Department of Internal Medicine, University of Ulm, Germany.
Clin Cardiol. 2002 Nov;25(11):517-24. doi: 10.1002/clc.4960251108.
No dataexist to indicate whether transthoracic (TTE) and transesophageal echocardiography (TEE) are of comparable value for the detection and quantification of mitral regurgitation using the proximal flow convergence method.
The study was performed to compare the value of TTE and TEE for the detection and quantification of mitral regurgitation using this method.
The study included 57 patients with and 11 patients without mitral regurgitation. In all patients, the proximal flow convergence region was imaged by transthoracic and transesophageal color Doppler echocardiography, and proximal isovelocity surface area radii were determined. In 19 patients, monoplane TEE and in 49 patients multiplane TEE was performed. Thirty-one patients with mitral regurgitation underwent cardiac catheterization.
Both methods had a comparable sensitivity for the detection of mitral regurgitation. Proximal isovelocity surface area radii derived from TTE and TEE agreed moderately (mean difference -0.5 +/- 1.3 mm). TTE and TEE correlated significantly with the angiographic grade (rank correlation coefficients 0.83 and 0.81), and both differentiated mild to moderate from severe mitral regurgitation with an accuracy of 90%. Regurgitant volumes derived from both echocardiographic techniques and cardiac catheterization correlated moderately (correlation coefficients between 0.67 and 0.81).
TTE and TEE were of comparable value for the detection and quantification of mitral regurgitation using the proximal flow convergence method.
尚无数据表明经胸超声心动图（TTE）和经食管超声心动图（TEE）在使用近端血流会聚法检测和定量二尖瓣反流方面是否具有同等价值。
本研究旨在比较TTE和TEE在使用该方法检测和定量二尖瓣反流方面的价值。
本研究纳入了57例有二尖瓣反流的患者和11例无二尖瓣反流的患者。对所有患者均采用经胸和经食管彩色多普勒超声心动图对近端血流会聚区域进行成像，并测定近端等速表面积半径。19例患者接受了单平面TEE检查，49例患者接受了多平面TEE检查。31例二尖瓣反流患者接受了心导管检查。
两种方法在检测二尖瓣反流方面具有相当的敏感性。TTE和TEE得出的近端等速表面积半径中度一致（平均差值为-0.5±1.3mm）。TTE和TEE与血管造影分级显著相关（等级相关系数分别为0.83和0.81），且两者区分轻度至中度与重度二尖瓣反流的准确率均为90%。两种超声心动图技术和心导管检查得出的反流容积中度相关（相关系数在0.67至0.81之间）。
在使用近端血流会聚法检测和定量二尖瓣反流方面，TTE和TEE具有同等价值。
