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Cerebral hypoxia is a form of hypoxia (reduced supply of oxygen), specifically involving the brain; when the brain is completely deprived of oxygen, it is called cerebral anoxia. There are four categories of cerebral hypoxia; they are, in order of increasing severity: diffuse cerebral hypoxia (DCH), focal cerebral ischemia , cerebral infarction ...
Brain injury is likely if respiratory arrest goes untreated for more than three minutes, and death is almost certain if more than five minutes. Damage may be reversible if treated early enough. Respiratory arrest is a life-threatening medical emergency that requires immediate medical attention and management. To save a patient in respiratory ...
At low altitudes hypoxia is more likely to be associated with a medical problem or an unexpected contingency, and treatment is more likely to be provided to suit the specific case. It is necessary to identify persons who need oxygen therapy, as supplemental oxygen is required to treat most causes of hypoxia, but different oxygen concentrations ...
Cases of cerebral softening in infancy versus in adulthood are much more severe due to an infant's inability to sufficiently recover brain tissue loss or compensate the loss with other parts of the brain. Adults can more easily compensate and correct for the loss of tissue use and therefore the mortality likelihood in an adult with cerebral ...
An example of histotoxic hypoxia is cyanide poisoning.There is a profound drop in tissue oxygen consumption since the reaction of oxygen with cytochrome oxidase is blocked by the presence of cyanide.
Within a few minutes of anoxia onset in the turtle's brain there is decreased cerebral blood flow that eventually ceases. Meanwhile, glycolysis is stimulated to maintain a near optimum ATP production. [3] This compensatory stimulation of glycolysis occurs because, in the turtle's brain, cytochrome a and a 3 have a low affinity for oxygen. [13]
[1] [2] It has recently been proven to be the only medical intervention which reduces brain damage, and improves an infant's chance of survival and reduced disability. Hypoxic ischemic encephalopathy has many causes and is defined essentially as the reduction in the supply of blood or oxygen to a baby's brain before, during, or even after birth.
Anoxia means a total depletion in the level of oxygen, an extreme form of hypoxia or "low oxygen". The terms anoxia and hypoxia are used in various contexts: Anoxic waters, sea water, fresh water or groundwater that are depleted of dissolved oxygen; Anoxic event, when the Earth's oceans become completely depleted of oxygen below the surface levels