Surgery is required depending on various factors such as the location of the aortic dissection and if the aortic dissection causes the artery to leak blood, blocks the blood supply to the legs or to the vital organs in the abdomen, causes symptoms, is enlarging, or occurs in a person with connective tissue disorder. An aortic dissection repair involves surgically removing the largest possible area of dissected aorta, close to the false channel between the middle and outer layers of the aortic wall, and replacing it with a synthetic graft.