Hyperemia Postischemic

**Postischemic hyperemia** is a pathology of peripheral vessels caused by prolonged or repeated disruption of the blood supply to tissues. As a result of hypoxia and ischemia, blood is redistributed in superficial and deep vessels, which leads to an increase in blood volume and an increase in blood pressure in arterioles and capillaries. Hyperemia usually occurs in response to hypoxia, which can be caused by various factors such as lung disease, anemia, cardiovascular disease, blood flow disorders and others.

In addition to disrupting blood flow, during hypoxia the body initiates protective mechanisms, such as increasing peripheral vascular resistance and dilating arteries, to ensure sufficient oxygen supply to tissues. However, often such expansion does not lead to an immediate improvement in blood circulation, and therefore hyperemia is called