Salem B I, Pechacek L W, Leachman R D
Chest. 1979 Apr;75(4):513-5. doi: 10.1378/chest.75.4.513.
A 21-year-old man had acute aortic insufficiency three months after insertion of an aortic valve prosthesis. Chest roentgenography demonstrated abnormal orientation of the prosthesis. M-mode echocardiography showed dense, linear echoes from the prosthetic valve between the interventricular septum and the mitral valve, along with loss of normal poppet motion within the aortic root. At surgery, the prosthesis was found to be extensively disrupted, resulting in prolapse into the left ventricular outflow tract. Another valve replacement was performed with patient survival. Echocardiography appears to be a useful adjunct to established roentgenographic procedures in the diagnosis of major dehiscence of prosthetic aortic valves.
一名21岁男性在植入主动脉瓣假体三个月后出现急性主动脉瓣关闭不全。胸部X线检查显示假体方向异常。M型超声心动图显示在室间隔和二尖瓣之间的人工瓣膜处有密集的线性回声，同时主动脉根部内正常的瓣叶运动消失。手术中发现假体广泛破裂，导致脱垂至左心室流出道。进行了再次瓣膜置换，患者存活。超声心动图似乎是已确立的X线检查方法在诊断人工主动脉瓣严重裂开方面的有用辅助手段。
