孕妇,39岁,G2P1,孕22周。胎儿心脏超声提示:单心室,主动脉发育不良(图1)。胎儿尸检解剖所见:心脏位置偏右,心尖朝向左侧;于心底可见两根大动脉从单心室发出,细者(主动脉)位于右后,向上行走,并依次发出头臂干及左颈总动脉,左颈总动脉与降主动脉连续性中断,由一狭细纤维条索与降主动脉相连通(图2)。左锁骨下 Pregnant woman, 39 years old, G2P1, pregnant 22 weeks. Fetal heart ultrasound tips: single ventricle, aorta dysplasia (Figure 1). Fetal autopsy findings: the right heart position, apex toward the left; seen in the bottom of the heart of two major arteries issued from the single ventricle, thinner (aorta) is located in the right, upward walk, and in turn issued a brachiocephalic trunk and left neck total Arteries, left common carotid artery and descending aorta continuity interrupted by a narrow fiber cord connected with the descending aorta (Figure 2). Left subclavian