Aortic dissection is the tearing of the aorta into the inner and outer layers due to local tearing of the aorta. That is, the aorta consists of three layers of hard shells, which suddenly tear in the aorta's inner skin, causing a large amount of blood from the heart to flow between the torn aortic shells, which is a very rapid and serious disease. Handsome in men and frequent in the 50s and 60s. The triggers include high blood pressure, Marfan's syndrome, arteriosclerosis, and heart disease (aortic annulus dilatation, retroarticular aortic valve, aortic constriction), and chest trauma.

The most common symptom of aortic dissection is severe chest pain, which is usually a severe pain that appears to be torn, occurring in front of the chest in ascending aortic dissection and between the dorsal scapula in descending thoracic aortic dissection. Severe chest pain and several low-volume shocks can occur, especially acute aortic valve insufficiency caused by complications of aortic dissection, pericardial piezoelectricity, and myocardial infarction caused by pressing the coronary arteries. In addition, cerebral blood vessel involvement can cause stroke symptoms, and intercostal arteries can involve lower limb paralysis.
 
 In case of invading the ascending aorta based on the anatomical location and extent of the aortic dissection, emergency surgery is required. In the case of involvement of only the descending thoracic aorta, the principle of medication is the priority. Aortic dissection is a very fatal disease that can cause sudden death, so it is difficult to accurately determine the overall survival rate, but if left untreated, the 1-month survival rate is less than 10%, especially in the ascending aorta. Disease.