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Reperfusion injury plays a major part in the biochemistry of hypoxic brain injury in stroke. Similar failure processes are involved in brain failure following reversal of cardiac arrest; [3] control of these processes is the subject of ongoing research.
This reperfusion results in inflammatory injury through three overlapping mechanisms. Some complimentary combination of, first, mitochondrial damage and, second, endothelial activation , causes a release of reactive oxygen species (ROS), which initiates and/or exacerbates a pathophysiological inflammatory response.
Ischemia-reperfusion (IR) tissue injury is the resultant pathology from a combination of factors, including tissue hypoxia, followed by tissue damage associated with re-oxygenation. IR injury contributes to disease and mortality in a variety of pathologies, including myocardial infarction , ischemic stroke , acute kidney injury , trauma ...
[5] [6] It is a reperfusion injury that appears after the release of the crushing pressure. The mechanism is believed to be the release into the bloodstream of muscle breakdown products—notably myoglobin , potassium and phosphorus —that are the products of rhabdomyolysis (the breakdown of skeletal muscle damaged by ischemic conditions).
About 30% of people have atypical symptoms. [8] Women more often present without chest pain and instead have neck pain, arm pain or feel tired. [11] Among those over 75 years old, about 5% have had an MI with little or no history of symptoms. [12] An MI may cause heart failure, an irregular heartbeat, cardiogenic shock or cardiac arrest. [3] [4]
reperfusion [7] of previously ischemic tissue that is associated with reperfusion-related diseases, [8] such as myocardial infarction, stroke (cerebral infarction), shock-resuscitation, replantation surgery, frostbite, burns, and organ transplantation. Micrograph of testis showing hemorrhagic infarction. H&E stain.
Cerebral hyperperfusion syndrome, also known as reperfusion syndrome, is a dysregulated state of cerebral blood flow following the restoration of arterial blood flow to the brain, usually following treatment of carotid artery stenosis. [1]
Reperfusion is the restoration of blood flow to an organ or tissue after having been blocked, and may refer to: Reperfusion injury , tissue damage caused when blood supply returns to the tissue Reperfusion therapy , the medical treatment that restores blood flow through blocked arteries, typically after a heart attack