For patients with hypertension, if blood pressure suddenly drops, there will be ischemia and reperfusion injury adverse consequences in the aorta, cerebral artery, coronary artery, cerebrovascular and cardiovascular, and in severe cases, there will be microcirculatory dysfunction and dysfunction in the peripheral circulation capillaries and internal circulation. In particular, it will cause ischemia and reperfusion disorders in the corresponding target tissues, such as the brain, cardiomyocytes, kidneys, etc. Patients will experience different degrees of dizziness, headache, nausea, vomiting, chest tightness, shortness of breath, palpitations, precordial discomfort, oliguria, etc. In severe cases, sudden cerebral infarction, cerebral embolism, acute myocardial ischemia, acute renal insufficiency, and other symptoms may also occur. All of these conditions are caused by a sudden drop in blood pressure in patients with hypertension, resulting in insufficient blood supply to the capillaries and insufficient blood and oxygen supply to the large arteries, which leads to adverse consequences.