stridor in a newborn with double aortic arch-a case report

Introduction: double aortic arch (daa) is a congenital anomaly of the aortic arch. it is the most common type of complete vascular ring. when it occurs, the connected segment of the aortic arch and its branches encircle the trachea and esophagus, leading to symptoms related to these two structures. case report: we present a case of a newborn baby who developed biphasic stridor immediately after a normal vaginal delivery. endoscopic assessment of the trachea revealed a pulsatile narrowing at the level of the thoracic trachea, suggestive of an external compression. a contrast-enhanced computed tomography scan of the thorax with three-dimensional reconstruction confirmed the diagnosis of daa with compression of the trachea and esophagus. conclusion: clinicians should strongly consider the possibility of a congenital vascular ring compression should an infant with a normal upper airway present with stridor. a precise diagnosis can be made by radiological examination.