单侧肺动脉异常起源于动脉导管的产前超声心动图特征分析

目的 总结单侧肺动脉异常起源于动脉导管的产前超声图像特征。方法 回顾性分析我院胎儿超声心动图检查发现的4例单侧肺动脉异常起源于动脉导管胎儿的声像图资料，随访新生儿超声心动图、心脏CTA检查资料及引产儿尸检报告，总结其产前超声图像表现。结果 4例单侧肺动脉异常起源于动脉导管胎儿中，左位主动脉弓、右肺动脉起源于动脉导管3例，右位主动脉弓、左肺动脉起源于动脉导管1例；产前肺动脉分叉切面仅见一侧肺动脉，另一侧缺如；无名动脉冠状切面显示患侧远端肺动脉通过动脉导管连接无名动脉根部。3例继续妊娠，出生后超声心动图未显示患侧肺动脉，心脏CTA示肺动脉缺如、无名动脉根部囊状憩室；1例终止妊娠，引产后尸检显示左位主动脉弓、右肺动脉通过动脉导管连接无名动脉根部。结论 应用产前胎儿超声心动图可准确诊断单侧肺动脉异常起源于动脉导管，出生后患侧动脉导管即收缩闭锁，产前诊断具有重要的临床价值。

Prenatal ultrasonic characteristics of unilateral pulmonary artery of ductal origin

Objective To summarize the prenatal ultrasonic characteristics of unilateral pulmonary artery of ductal origin. Methods Fetal echocardiography data from 4 fetuses with unilateral pulmonary artery of ductal origin were retrospectively analyzed, Neonatal echocardiography, cardiac CTA examination data and autopsy reports of induced infants were followed up, and the prenatal echocardiography characteristics are summarized Results Among the 4 fetuses with unilateral pulmonary artery of ductal origin, there were 3 cases with left aortic arch and right pulmonary artery originating from arterial ducts, and 1 case with right aortic arch and left pulmonary artery originating from arterial ducts; The prenatal pulmonary artery bifurcation view showed only one pulmonary artery ,with the other side absent; The coronal view of the anomalous artery revealed the distal pulmonary artery on the affected side connected to the root of the anomalous artery through arterial duct. 3 cases chose to continue the pregnancy, and postnatal echocardiography did not show the affected pulmonary artery, Cardiac CTA revealed pulmonary artery agenesis and a cystic diverticulum in the root of the unnamed artery; In one case, the pregnancy was terminated, and autopsy findings after induction of labor showed right pulmonary artery connected to the root of the anomalous artery through the arterial duct. Conclusion Prenatal fetal echocardiography can accurately diagnose unilateral pulmonary artery of ductal origin. The ductus arteriosus on the affected side will constrict and become atretic after birth. Prenatal diagnosis holds significant clinical value.