Quantification of mitral regurgitation by live three-dimensional transthoracic echocardiographic measurements of vena contracta area
Quantification of mitral regurgitation by live three-dimensional transthoracic echocardiographic measurements of vena contracta area
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DOI：
10.1111/j.0742-2822.2004.40027.x
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发表时间：
2004-11-01
影响因子：
1.5
通讯作者：
Misra, VK
中科院分区：
文献类型：
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作者：
Khanna, D;Vengala, S;Misra, VK
我们评估了44名连续患者，他们接受了标准二维（2D）和实时三维OD）经胸超声心动图（TTE），以及左心导管插入术和左心室造影术。通过系统和顺序裁剪采集的3D TTE数据集，通过3D TTE获得二尖瓣反流缩脉面积（VCA）。通过心室造影术评估二尖瓣返流（MR）与通过3D TTE测量的VCA和MR射流面积与左心房面积（RJA/LAA）、单独RJA、收缩静脉宽度（VCW）和计算的VCA的2D TTE测量进行比较。3D TTE的VCA与血管造影分级密切相关（r（s）= 0.88），重叠很少。血管造影显示VCA为0.4 cm（2）伴重度MR。血管造影分级也与RJA/LAA（r（s）= 0.79）和单独RJA（r（s）= 0.76）的2D TTE测量结果相关性良好，但重叠较多。通过2D TTE评估的VCW和计算的VCA与心室造影最不一致（分别为r（s）= 0.51和r（s）= 0.55）。VCA的实时3D TTE彩色多普勒测量可用于MR的定量评估，与心室造影评估相当。
We evaluated 44 consecutive patients who underwent standard two-dimensional (2D) and live three-dimensional OD) transthoracic echocardiogrophy (TTE), as well as left heart catheterization with left ventriculography. Mitral regurgitant vena contracta area (VCA) was obtained by 3D TTE by systematic and sequential cropping of the acquired 3D TTE data set. Assessment of mitral regurgitation (MR) by ventriculography was compared to measurements of VCA by 3D TTE and to 2D TTE measurements of MR jet area to left atrial area (RJA/LAA), RJA alone, vena contracta, width (VCW), and calculated VCA. VCA from 3D TTE closely correlated with angiographic grading (r(s), = 0.88) with very little overlap. VCA of 0.4 cm(2) with severe MR by angiography. Ventriculographic grading also correlated well with 2D TTE measurements of RJA/LAA (r(s) = 0.79) and RJA alone (r(s) = 0.76) but with more overlap. Assessment of VCW and calculated VCA by 2D TTE agreed least with ventriculography (r(s), = 0.51 and r(s), = 0.55, respectively). Live 3D TTE color Doppler measurements of VCA can be used for quantitative assessment of MR and is comparable to assessment by ventriculography.