孕妇,25岁。孕39~(+5)周,阵发性宫缩痛3h来院.超声检查:宫内单活胎,胎头位于耻上,胎动好,双顶径89 mm,头围319 mm,腹围310 mm,股骨长67 mm。胎心率142次/min,律齐,脐动脉S/D:2.3。胎盘附着于后壁厚约35 mm,Ⅱ级。羊水指数92 mm。胎儿心脏四腔心结构异常,十字交叉消失,可见一组房室瓣飘动,呈单心房单心室结构,右侧可见残余心腔结构(图1),两条大血管平 Pregnant woman, 25 years old. Pregnancy 39 ~ (+5) weeks, paroxysmal uterine contractions pain 3h to hospital .Ultrasonography: intrauterine single live fetus, fetal head in shame, fetal movement, biparietal diameter 89 mm, head circumference 319 mm, abdominal circumference 310 mm, femur length 67 mm. Fetal heart rate 142 beats / min, Law Qi, umbilical artery S / D: 2.3. Placenta attached to the posterior wall thickness of about 35 mm, Ⅱ level. Amniotic fluid index 92 mm. Fetal heart four-chamber heart structure abnormalities, cross disappeared, we can see a series of atrioventricular flap flutter, was single-ventricular single ventricular structure, the right can be seen residual heart chamber structure (Figure 1), two large vascular smooth