The median gestational age at echocardiographic exam was 32 weeks in both fetuses who needed BAS and who didn’t. 6 of them received the urgent BAS within 3 days after birth. We also focused on the shape of the foramen ovale.Īmong all 22 cases, 12 were included as TGA with intact ventricular septum or small VSD. Regarding the analysis of the atrial septum, we measured the maximal angle of flap of the foramen ovale and calculated the ratio of the maximal bulging of the foramen ovale towards the left atrial wall to the left atrial width, as well as the ratio of the foramen ovale length to the atrial septal length.
We measured the diameter of the ductus arteriosus and reviewed the Doppler flow pattern. We assessed their ductus arteriosus and foramen ovale on the basis of the past several studies.
We reviewed the echocardiograms of the fetuses prenatally diagnosed as TGA and managed at our institution between January 2012 and December 2018, retrospectively. We aimed to identify the prenatal echocardiographic features that may predict the need for urgent BAS.
In such cases, immediate balloon atrial septostomy (BAS) is needed in order to improve mixing of the pulmonary and systemic circulation. However, some neonates, especially who have intact ventricular septum or small ventricular septal defect (VSD), show severe hypoxemia soon after birth and even die in preoperative period. Prenatal diagnosis of transposition of the great arteries (TGA) has been progressing, and the surgical outcome from the arterial switch operation is usually successful. National Cerebral and Cardiovascular Center, Pediatric Cardiology, Osaka-Japan 2 National Cerebral and Cardiovascular Center, Perinatology, Osaka-Japan 1
Obstetrics - Fetal echocardiography and Congenital Heart Diseases E1060 - PRENATAL ECHOCARDIOGRAPHIC FINDINGS IN FETUSES WITH TRANSPOSITION OF THE GREAT ARTERIES TO PREDICT THE NEED FOR BALLOON ATRIAL SEPTOSTOMY
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