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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.
Diseases that result in acute or chronic respiratory distress can result in hypoxia. These diseases can be acute in onset (such as obstruction by inhaling something or a pulmonary embolus) or chronic (such as chronic obstructive pulmonary disease). Cirrhosis can be complicated by refractory hypoxemia due to high rates of blood flow through the ...
The most immediate injury caused by asphyxia is hypoxia, which can in turn cause acute lung injury or acute respiratory distress syndrome as well as damage to the circulatory system. The most severe injury associated with asphyxiation is cerebral hypoxia and ischemia , in which the brain receives insufficient oxygen or blood, resulting in ...
Brain injury as a result of oxygen deprivation either due to hypoxic or anoxic mechanisms are generally termed hypoxic/anoxic injuries (HAI). Hypoxic ischemic encephalopathy ( HIE ) is a condition that occurs when the entire brain is deprived of an adequate oxygen supply, but the deprivation is not total.
Prolonged hypoxia induces neuronal cell death via apoptosis, resulting in a hypoxic brain injury. [34] [35] Oxygen deprivation can be hypoxic (reduced general oxygen availability) or ischemic (oxygen deprivation due to a disruption in blood flow) in origin. Brain injury as a result of oxygen deprivation is generally termed hypoxic injury.
Chronic wounds may take years to heal or, in some cases, may never heal, causing significant physical and emotional stress for patients and placing a financial burden on healthcare systems. [7] Acute and chronic wounds are part of a spectrum, with chronic wounds requiring prolonged and complex care compared to acute wounds.
Left alone, Nash said, veterans with moral injury either conclude that “none of this is my fault,” or “it’s all my fault.” Neither can be totally true. “In your heart of hearts, you know you were the one who pulled the trigger. You can’t unring the bell, can’t undo what was done. And that’s a time bomb,” he said.
Cell damage (also known as cell injury) is a variety of changes of stress that a cell suffers due to external as well as internal environmental changes. Amongst other causes, this can be due to physical, chemical, infectious, biological, nutritional or immunological factors. Cell damage can be reversible or irreversible.