Aguilar J A, Summerson C
Servicio de Cardiología, Hospital General Regional No.20 IMSS, Tijuana B.C. México.
Arch Inst Cardiol Mex. 1996 Jan-Feb;66(1):44-50.
An asymptomatic 15-year-old woman was studied because of a systolic ejection murmur. The echocardiogram showed a mobile, leaflet-like structure attached to the ventricular surface of the anterior mitral leaflet, chordae tendineae and papillary muscle. This structure moved to the left ventricular outflow tract during systole occupying the subaortic area. Conventional Doppler examination revealed left ventricular outflow obstruction caused by the accessory mitral valve tissue that produced a pressure gradient of 25 mmHg between the aorta and left ventricle. The diagnosis was not obvious clinically and was based on the echocardiographic data.
一名15岁无症状女性因收缩期喷射性杂音接受检查。超声心动图显示一个可移动的、类似小叶的结构附着于二尖瓣前叶、腱索和乳头肌的心室表面。该结构在收缩期移至左心室流出道，占据主动脉下区域。传统多普勒检查显示，二尖瓣附属组织导致左心室流出道梗阻，在主动脉和左心室之间产生25 mmHg的压力阶差。临床诊断不明显，基于超声心动图数据确诊。
