Published in:
01-02-2013 | Images in Pediatric Cardiology
Prenatal Images of the Truncus Arteriosus With an Interrupted Aortic Arch
Published in: Pediatric Cardiology | Issue 2/2013
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A 31-year-old primigravida was referred to our unit due to suspicion of a cardiac anomaly on obstetric screening ultrasound at 28 weeks of gestation. Although fetal echocardiography in the four-chamber view showed atrioventricular concordance and normal cardiac size, an outflow tract abnormality was noted. A single large vessel arising from the left and right ventricles and a ventriculoseptal defect (VSD) were identified (Fig. 1a; Movie 1). The main pulmonary trunk was not detected, and bilateral pulmonary arteries arose from opposite sides of the single large vessel. This unique outflow tract was therefore identified as a truncus arteriosus (TA).
Fig. 1
Fetal echocardiography at 28 weeks gestation. a Fetal echocardiography showing a single large vessel arising from both the left and right ventricles. b, c Sagittal views of fetal echocardiography showing a hypoplastic ascending aorta with interruption between the left subclavian artery and the descending aorta arising from the ductus arteriosus. LV left ventricle, RV right ventricle, TA truncus arteriosus, AAo ascending aorta, IA innominate artery, LCCA left common carotid artery, LSA left subclavian artery, DA ductus arteriosus, DAo descending aorta
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