Why low blood pressure can cause stroke

We know that a major stroke and vascular diseases related. Cerebrovascular normal blood pressure in a certain area with its own regulatory role. When a cerebral vascular lesions, vascular self-regulatory function should be at a higher blood pressure can play a role within the framework. Low blood pressure, cerebral vascular expansion not only does not, it will happen spasm, resulting in brain tissue ischemia, hypoxia, the infarct. In addition, low blood pressure, slow brain blood circulation in the blood platelets, cholesterol and fibrin deposition easy to increased blood viscosity, formation of thrombus and stroke.
Low blood pressure occurred when most of ischemic stroke, arteriosclerosis it is the people, especially the elderly, should be taken to avoid low blood pressure; antihypertensive therapy in patients with hypertension, we should pay attention to fast buck not excessive.
In short, high blood pressure and low blood pressure in the elderly are not numb thinking, we should adopt effective measures and actively prevent the occurrence of stroke.