How long a person with aortic stenosis lives depends on the severity of the symptoms and complications, and whether or not the patient is treated in a timely manner. Aortic stenosis causes an increase in blood flow to the proximal part of the heart, which raises blood pressure in the brain and makes it susceptible to cerebral hemorrhage, while a decrease in blood flow to the distal part of the heart, which is the lower end of the stenosis, leads to ischemic symptoms, such as weakness in the lower extremities or intermittent claudication. Prolonged aortic stenosis may cause cerebral aneurysm, high blood pressure, heart failure, aneurysm formation and other serious complications. Life expectancy will be reduced if these relatively serious complications occur, and even death if the aneurysm ruptures, so life expectancy will depend on the severity of the symptoms and complications, as well as on whether or not the patient is treated in a timely manner. Once detected, the stenosis needs to be completely removed surgically, blood pressure needs to be controlled with antihypertensive medication, and the narrowed aorta needs to be reconstructed by removing the narrowed portion and restoring it to its normal internal diameter or interventional procedures such as balloon angioplasty can be performed in high-risk patients and adults. With prompt treatment, symptoms and complications are relieved and life expectancy is relatively longer.