Wu Qingyu, Zhang Lufeng, Zhu Rui
Heart Center, First Hospital of Tsinghua University, Beijing, China.
Ann Thorac Surg. 2008 May;85(5):1789-91. doi: 10.1016/j.athoracsur.2007.11.069.
We successfully operated on a patient with a rare complication of left ventricular outflow tract obstruction after mitral valve replacement. In a 57-year-old woman with previous mitral valve replacement, transthoracic echocardiography showed left ventricular outflow tract obstruction as a result of anterior displacement of the mitral prosthesis and local thickening of the interventricular septum. Cardiac surgery verified this rare lesion. During the operation, the anterior half of the prosthesis ring was cut away from hyperplastic tissue and sutured to the natural mitral annulus. Subaortic hyperplastic tissue was excised to enlarge the left ventricular outflow tract. The patient had an uneventful postoperative recovery, and left ventricular outflow tract obstruction disappeared on postoperative transthoracic echocardiography.
我们成功地为一名二尖瓣置换术后出现左心室流出道梗阻这一罕见并发症的患者进行了手术。在一名曾接受二尖瓣置换术的57岁女性患者中，经胸超声心动图显示二尖瓣人工瓣膜向前移位以及室间隔局部增厚导致左心室流出道梗阻。心脏外科手术证实了这一罕见病变。手术过程中，将人工瓣膜环的前半部分从增生组织上切除并缝合至天然二尖瓣环。切除主动脉下增生组织以扩大左心室流出道。患者术后恢复顺利，术后经胸超声心动图显示左心室流出道梗阻消失。
