The aorta is the thickest large artery in the body, the pathway through which blood travels from the heart to the whole body. Under normal conditions, the aorta has a three-layer wall like a splint, which is strong and flexible enough to withstand the general flow of blood and the pressure of minor collisions. Aortic coarctation is a common and sudden disease of the aorta with rapid morbidity and high mortality due to blood entering the aortic wall through the tear in the aortic intima and causing separation between the originally tightly packed layers of the arterial wall. 1. What are the causes of aortic coarctation? The causes of aortic coarctation are not clear. According to the available medical data, the causes of aortic coarctation are mostly related to the following factors: (1) hypertension; (2) trauma (especially fall injuries and collisions); (3) transmissible and connective tissue diseases (Marfan syndrome, etc.); (4) congenital cardiovascular disorders (aortic valve malformation, aortic constriction, etc.); (5) aortitis (an (5) aortitis (an immune system disease); (6) atherosclerosis, etc. 2.Is aortic coarctation scary? Sudden acute aortic coarctation is very frightening and is a clinical emergency with a very high mortality rate, and many patients die suddenly before they reach the hospital. Once aortic dissection occurs, hemorrhagic shock or pericardial tamponade will occur and sudden death will occur. Doctors often say that “it cannot be resuscitated even at the door of the operating room”. 3.Why aortic coarctation may occur in late pregnancy? The possibility of aortic coarctation in late pregnancy is considered to be related to the hemodynamic changes during pregnancy (increase in systemic blood volume) and the endocrine changes in the body after pregnancy. 4.How to prevent the occurrence of aortic coarctation? Active control of blood pressure is the first priority, in addition to a light diet in general, avoid high-fat and high-sugar diet, appropriate outdoor exercise, control blood sugar, blood pressure and lipids, and maintain an optimistic attitude towards life.