产前超声诊断胎儿法洛四联症

目的 探讨产前超声诊断胎儿法洛四联症的临床价值。方法 回顾性分析15例经胎儿超声检查诊断为法洛四联症的超声资料与随访结果，分析总结胎儿心脏各切面异常声像图特点。结果13例胎儿经尸体解剖或产后手术证实为法洛四联症，2例胎儿产后超声和手术诊断为单纯室间隔缺损；胎儿法洛四联症的主要声像图特征是室间隔缺损、主动脉骑跨和肺动脉狭窄；主动脉根部内径增宽和肺动脉与主动脉内径比值减小亦有助于产前诊断。结论 超声心动图产前诊断胎儿法洛四联症具有重要的临床意义，但在检查时应注意多种影响因素。

Prenatal echocardiographic diagnosis of fetal tetralogy of Fallot

Objective To investigate the clinical value of prenatal diagnosis of fetal tetralogy of Fallot with fetal echocardiography.Methods The data of 15 fetuses diagnosed as tetralogy of Fallot by fetal echocardiography were reviewed and the abnormal echocardiographic features in various sonographic views were analyzed.Results Thirteen fetuses were confirmed to be tetralogy of Fallot by autopsy or operation after birth and two fetuses just simple ventricular septal defect verified by post echocardiography and surgery.The key echocardiographic features of tetralogy of Fallot were uniformly demonstrated to ventricular septal defect ,overriding aorta and subpulmonary stenosis.The leftward deviation of the cardiac apex,aortic root dilation and abnormal ratio of pulmonary artery to aorta were helpful to the prenatal diagnosis of fetal tetralogy of Fallot.Conclusions Fetal tetralogy of Fallot can be detected by echocardiography,but some affected factors should be noted in fetal heart examination.