早孕期胎儿法洛四联症的超声诊断特征

Prenatal ultrasonic diagnostic features of tetralogy of Fallot in early pregnancy

目的探讨早孕期胎儿法洛四联症的超声诊断特征。方法回顾性分析2019年9月22日于莱州市妇幼保健院超声科行产前超声检查,并经病理解剖证实为法洛四联症的1例14周胎儿的产前超声资料,并文献复习。结果胎儿心脏超声声像图表现:四腔心切面显示心轴异常,三尖瓣反流,左心室流出道切面显示膜周部室间隔缺损,主动脉增宽且骑跨于室间隔之上,彩色多普勒血流显像显示收缩期左心室血流与右心室经室间隔缺损的血流共同进入主动脉,呈彩色“y”征,右心室流出道切面显示肺动脉细窄。病理解剖证实为法洛四联症。结论法洛四联症是最常见的圆锥动脉干畸形之一,超声检查无创,方法简单易行,可为法洛四联症产前早期诊断提供影像学依据。

Objective To investigate the prenatal ultrasonic diagnostic features of tetralogy of Fallot(TOF)in early pregnancy.Methods The prenatal ultrasound data of a case of 14-week-old fetus with TOF,who was confirmed by pathological anatomy in the Ultrasound Department of Laizhou Maternity and Child Healthcare Hospital on September 22,2019 were retrospectively analyzed,and literatures were reviewed.Results The prenatal echocardiography of TOF showed abnormal cardiac axis and tricuspid regurgitation in four chamber view.Perimembranous ventricular septal defect,widened aorta straddling the interventricular septum were showed in left ventricular outflow tract.Color Doppler flow imaging showed the color“y”sign,which was formed by left ventricular blood flow and right ventricular blood flow through ventricular septal which entered the aortic in systole together.Narrowed pulmonary artery was showed in right ventricular outflow tract.Pathological anatomy confirmed the diagnosis of TOF.Conclusion s TOF is a common conotruncal defect.Ultrasonic examination is noninvasive and simple,which can provide imaging evidence for prenatal diagnosis of TOF.