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Coarctation of the aorta, or aortic narrowing (abbreviated as CoA), is a congenital condition whereby the aorta narrows in the area where the ductus arteriosus (ligamentum arteriosum after regression) inserts.: Coarctation (narrowing) of the aorta. 1:Inferior vena cava, 2:Right pulmonary veins, 3: Right pulmonary artery, 4:Superior vena cava, 5:Left pulmonary artery, 6:Left pulmonary veins, 7:Right ventricle, 8:Left ventricle, 9:Pulmonary artery, 10:Aorta.
The aorta is the main artery which arises from the heart and passes through the thorax (chest) and abdomen to carry oxygenated blood from the heart to other parts of the body. 1  Abdominal aortic aneurysm is an aneurysm occurring in the abdominal portion of the aorta.hen an arterial wall is damaged or injured due to any cause, the force exerted by the blood within the artery can easily push out the weakened wall and form an aneurysm. This may occur due to 1  : Old age. 2  Hypertension â high blood pressure.