What is interrupted aortic arch?
Interrupted aortic arch is a very rare heart defect that occurs when the aorta does not develop normally while the baby is in the mother’s womb. It comprises about 1% of all congenital heart defects. It usually occurs along with other heart problems such as truncus arteriosus, ventricular septal defect, transposition of the great arteries, and aortic stenosis. The aorta is the large blood vessel that arises from the left side of the normal heart and takes red blood out to the body. The first part of the aorta, called the ascending aorta (1) arises upwards. It then curves leftward forming the aortic arch (2). The aorta then curves downward towards the lower body, and this part is called the descending aorta (3). Three blood vessels exit from the aortic arch and supply the head and arms with red blood. These vessels are called the innominate artery (4), the left carotid artery (5), and the left subclavian artery (6). In babies with interrupted aortic arch, there is a complete blockage be
