Video 31.10 Right aortic arch with a left descending aorta and a left ductus arteriosus. Echocardiogram in a transverse orientation
Right aortic arch with a left descending aorta and a left ductus arteriosus. Echocardiogram in a transverse orientation from a suprasternal notch window demonstrating the transverse aortic arch coursing to the right of the echo-bright trachea. The first branch off the arch is the left innominate artery, which is then seen to bifurcate into the left common carotid and left subclavian arteries. The second and third branches off the arch are the right common carotid and right subclavian arteries, respectively. Note that the transverse aortic arch courses not only posteriorly but also slightly leftwards and that the proximal descending aorta is positioned posterior to the trachea.