A New Definition for an Old Entity: Improved Definition of Mitral Valve Prolapse Using Three-Dimensional Echocardiography and Color-Coded Parametric Models

被引:21
作者
Addetia, Karima [1 ]
Mor-Avi, Victor [1 ]
Weinert, Lynn [1 ]
Salgo, Ivan S. [2 ]
Lang, Roberto M. [1 ]
机构
[1] Univ Chicago, Chicago, IL 60637 USA
[2] Philips Med Syst, Andover, MA USA
关键词
Mitral valve; Prolapse; Billowing; Three-dimensional echocardiography; MULTIPLANE TRANSESOPHAGEAL ECHOCARDIOGRAPHY; VALVULAR HEART-DISEASE; CARDIOVASCULAR-ANESTHESIOLOGISTS; DIAGNOSTIC-ACCURACY; REGURGITANT DEFECTS; AMERICAN SOCIETY; TASK-FORCE; RECOMMENDATIONS; GUIDELINES; IDENTIFICATION;
D O I
10.1016/j.echo.2013.08.025
中图分类号
R5 [内科学];
学科分类号
1002 ; 100201 ;
摘要
Background: Differentiating between mitral valve (MV) prolapse (MVP) and MV billowing (MVB) on two-dimensional echocardiography is challenging. The aim of this study was to test the hypothesis that color-coded models of maximal leaflet displacement from the annular plane into the atrium derived from three-dimensional transesophageal echocardiography would allow discrimination between these lesions. Methods: Three-dimensional transesophageal echocardiographic imaging of the MV was performed in 50 patients with (n = 38) and without (n = 12) degenerative MV disease. Definitive diagnosis of MVP versus MVB was made using inspection of dynamic three-dimensional renderings and multiple two-dimensional cut planes extracted from three-dimensional data sets. This was used as a reference standard to test an alternative approach, wherein the color-coded parametric models were inspected for integrity of the coaptation line and location of the maximally displaced portion of the leaflet. Diagnostic interpretations of these models by two independent readers were compared with the reference standard. Results: In all cases of MVP, the color-coded models depicted loss of integrity of the coaptation line and maximal leaflet displacement extending to the coaptation line. MVB was depicted by preserved leaflet apposition with maximal displacement away from the coaptation line. Interpretation of the 50 color-coded models by novice readers took 5 to 10 min and resulted in good agreement with the reference technique (kappa = 0.81 and kappa = 0.73 for the two readers). Conclusions: Three-dimensional color-coded models provide a static display of MV leaflet displacement, allowing differentiation between MVP and MVB, without the need to inspect multiple planes and while taking into account the saddle shape of the mitral annulus.
引用
收藏
页码:8 / 16
页数:9
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