Rudominer Rebecca, Saric Muhamed, Benenstein Ricardo, Skolnick Adam H
Department of Medicine, Leon H. Charney Division of Cardiology, NY University School of Medicine, New York, NY 10016, USA.
J Clin Ultrasound. 2013 Jul-Aug;41(6):392-3. doi: 10.1002/jcu.21948. Epub 2012 Jun 7.
A 55-year-old woman was diagnosed with endocarditis involving the aortic valve and resulting in moderate aortic insufficiency. Transesophageal and transthoracic echocardiography demonstrated an unusually accentuated diastolic anterior motion of the anterior mitral valve leaflet toward the interventricular septum. The anterior leaflet remained within a few millimeters of the septum throughout diastole, with a narrow jet of aortic insufficiency separating the anterior leaflet from the septum. We hypothesize that the particularly long anterior mitral leaflet was drawn toward the septum during diastole due to the Venturi effect of the aortic insufficiency jet within a narrow ventricular outflow tract. This accentuated diastolic anterior motion may be a diastolic correlate of systolic anterior motion of the mitral valve.
一名55岁女性被诊断为累及主动脉瓣的心内膜炎，并导致中度主动脉瓣关闭不全。经食管和经胸超声心动图显示二尖瓣前叶在舒张期朝向室间隔的异常明显的前向运动。整个舒张期，前叶与室间隔保持在几毫米的距离内，一股狭窄的主动脉瓣关闭不全血流束将前叶与室间隔分开。我们推测，由于狭窄的心室流出道内主动脉瓣关闭不全血流束的文丘里效应，特别长的二尖瓣前叶在舒张期被拉向室间隔。这种明显的舒张期前向运动可能是二尖瓣收缩期前向运动的舒张期对应表现。
