超声心动图诊断成人永存动脉干

Echocardiographic diagnosis of persistent truncus arteriosus in adult patients

采用超声心动图(UCG)检出永存动脉干3例,UCG特征为心底部仅有单根大动脉发出,骑跨于巨大缺损的室间隔上;诸切面观中不能探及右室流出道和肺动脉瓣.其中1例直接显示主肺动脉从大动脉干后侧壁发出.UCG还能检出合并的其他异常,如完全性房室通道和感染性心内膜炎.

Three male patients, aged 19,22 and 23 years respectively, were diagnosed by e-chocardiography as having persistent truncus arteriosus. The echocardiographic findings were characterized by a single great arterial trunk overriding the ventricular septum and the absence of substantial right ventricular outflow tract space and pulmonary leaflets. In one patient, the origin of a main pulmonary artery (MPA) from the truncus was directly visualized and the blood flow from truncus to MPA was clearly shown by color Doppler imaging. The concomitant abnormalities such as endocardial cushion defect and endocarditis were also detected during the echocardiographic examination.