Bất thường này thường liên kết với còn ống động mạch. Tăng gấp đôi động mạch chủ vòm tạo ra một vòng mạch máu xung quanh khí quản và thực quản. xem chiếc nhẫn cũng mạch máu. | 220 Glossary limbs join to form a single descending aorta. There are several forms such as widely open right and left arches or hypoplasia atresia of one arch usually the left . This anomaly is commonly associated with patent ductus arteriosus. Double aortic arch creates a vascular ring around the trachea and the esophagus. see also vascular ring. persistent 5th aortic arch. Double-lumen aortic arch with both lumina on the same side of the trachea. Degree of lumen patency varies from full patency of both lumina to complete atresia of one of them. Seen in some patients with coarctation of the aorta or interruption of the aortic arch. interrupted aortic arch. Complete discontinuation between the ascending and descending thoracic aorta. - Type A interruption distal to the subclavian artery that is ipsilateral to the second carotid artery. - Type B interruption between second carotid artery and ipsilateral subclavian artery. - Interruption between carotid arteries. aortic-left ventricular defect tunnel Vascular connection between the aorta and the left ventricle resulting in left ventricular volume overload due to regurgitation from the aorta via the tunnel to the left ventricle. aortic override see tetralogy of Fallot. aortic valve-sparing ascending aortic replacement see David operation. aorto-pulmonary collateral Abnormal arterial vessel arising from the aorta providing blood supply to the pulmonary arteries. May be single or multiple and small or large see also MAPCA . May be associated with tetralogy of Fallot pulmonary atresia or other complex cyanotic congenital heart disease. aorto-pulmonary septal defect see aorto-pulmonary window. aorto-pulmonary window A congenital connection between the ascending aorta and main pulmonary artery which may be contiguous with the semi-lunar valves or less often separated from them. Simulates the physiology of a large PDA but requires a more demanding repair. syn. aorto-pulmonary septal defect. arterial switch operation see .
