Morganroth J, Mardelli T J, Naito M, Chen C C
Chest. 1981 Jan;79(1):23-8. doi: 10.1378/chest.79.1.23.
In light of the nonspecificity of left ventricular angiography and physical examination, and the limitations of M-mode echocardiography to define the presence of mitral valve prolapse syndrome, we evaluated left ventricular longitudinal and apical four-chamber tomographic views of cross sectional echocardiography in 19 subjects with normal left ventricular cineangiography and in 5 patients with congestive cardiomyopathy. None had auscultatory findings suggestive of mitral valve prolapse syndrome. In all 24 control subjects, the apical view demonstrated the coaptation point and the leaflets of the mitral valve to lie inside the left ventricular cavity. A retrospective analysis of 900 consecutive cross sectional echocardiographic studies revealed 105 subjects with no evidence of structural heart disease other than the presence of the mitral valve leaflets in the left atrium in systole defining the existence of idiopathic mitral valve prolapse syndrome. Both mitral leaflets were prolapsed in 90 percent of the involved populations, and the apical tomographic cross sectional echocardiographic view was superior to the left ventricular longitudinal view for the detection of anterior leaflet prolapse. These data suggest that the apical cross sectional view may be the single best technique to define the presence of idiopathic mitral valve prolapse syndrome.
鉴于左心室血管造影和体格检查的非特异性，以及M型超声心动图在定义二尖瓣脱垂综合征存在方面的局限性，我们对19例左心室电影血管造影正常的受试者和5例充血性心肌病患者进行了横断面超声心动图的左心室纵向和心尖四腔断层图像评估。所有人听诊均未发现提示二尖瓣脱垂综合征的表现。在所有24例对照受试者中，心尖视图显示二尖瓣的瓣叶对合点和瓣叶位于左心室内。对900例连续横断面超声心动图研究的回顾性分析显示，105例受试者除了在收缩期二尖瓣叶位于左心房提示特发性二尖瓣脱垂综合征存在外，没有结构性心脏病的证据。在90%的受累人群中，二尖瓣的两个瓣叶均脱垂，并且心尖断层横断面超声心动图视图在检测前叶脱垂方面优于左心室纵向视图。这些数据表明，心尖横断面视图可能是定义特发性二尖瓣脱垂综合征存在的最佳单一技术。
