<unk> , sometimes called ischemia-reperfusion injury (IRI) or reoxygenation injury, is the tissue damage caused when blood supply returns to tissue (re- + perfusion) after a period of ischemia or lack of oxygen (anoxia or hypoxia). The absence of oxygen and nutrients from blood during the ischemic period creates a condition in which the restoration of circulation results in inflammation and oxidative damage through the induction of oxidative stress rather than (or along with) restoration of normal function.<unk>  is distinct from cerebral hyperperfusion syndrome (sometimes called<unk>  syndrome"), a state of abnormal cerebral vasodilation.
Reperfusion injury
Ischemic cascade
Warfarin necrosis
Ischemia
Distributive shock
Second-impact syndrome
Crush injury
Myelonecrosis