A constriction of this aorta. During the point of coarctation, the edges of this aorta seem to be pushed together. Blood circulation pressure is increased over the constriction, and flow of blood is impeded underneath the standard of the constriction. Warning signs may possibly not be obvious at birth but could develop when 1st week after birth, with congestive heart failure or high blood pressure that demand very early surgery. The outlook after surgery is usually favorable. Some instances of coarctation associated with aorta have been treated with balloon angioplasty.