When the aorta does not develop completely in the area of the arch. As a result, the aorta is divided into two parts that are not connected to each other, preventing blood flow through the aorta.
Interrupted aortic arch is a very rare heart defect in which the aorta is not completely developed. There is a gap between the ascending and descending thoracic aorta. Almost all patients also have other cardiac anomalies.