Ultrasonic Diagnosis of Fetal Pulmonary Atresia with Ventricular Septal Defect

YU Jinhua; GAO Wenjuan; HUANG Jin; FU Shiwen; MIAO Wei; WANG Junhua; YANG Fengxia; DAI Peifeng

Abstract：Objective To explore the clinical value of prenatal ultrasound for diagnosis of fetal pulmonary atresia with ventricular septal defect ( PA-VSD) . Methods Echocardiography data of 15 fetuses with pulmonary atresia along with ventricular septal defect ( PA-VSD) confirmed by autopsy were analyzed retrospectively, and the characteristics of their abnormal ultrasound images were sum-marized. Result 15 cases of PA-VSD all showed ventricular septal defect and broadening of aorta straddling on ventricular septal, in which the straddles rate was about 40%. Diameters of primary pulmonary artery of 9 cases were smaller than those of aorta. Primary pul-monary artery of 6 cases didn’t show. Left and right pulmonary arteries were fused. 6 branches developed well, while 9 branches of left and right pulmonary artery developed poorly. Four-chamber view of 12 cases with PA-VSD was symmetrical, while that of 3 cases was asymmetrical because of cardiac malformations. Three blood vessels and trachea view were abnormal. Reverse flow of arterial duct of all cases with PA-VSD were detected by Color Doppler flow imaging. Conclusion Pulmonary atresia with ventricular septal defect can be diagnosed accurately by prenatal echocardiography. Development of pulmonary artery trunk and its branches can be observed to as-sess development of pulmonary artery, which is helpful to provide important clinical information for selective termination of pregnancy and postpartum surgery of fetuses.