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Brain ischemia is a condition in which there is insufficient bloodflow to the brain to meet metabolic demand. [ 1] This leads to poor oxygen supply or cerebral hypoxia and thus leads to the death of brain tissue or cerebral infarction / ischemic stroke. [ 2] It is a sub-type of stroke along with subarachnoid hemorrhage and intracerebral hemorrhage.
Cerebral edema is excess accumulation of fluid ( edema) in the intracellular or extracellular spaces of the brain. [ 1] This typically causes impaired nerve function, increased pressure within the skull, and can eventually lead to direct compression of brain tissue and blood vessels. [ 1] Symptoms vary based on the location and extent of edema ...
High-altitude cerebral oedema [ 1] (HACO) High-altitude cerebral edema ( HACE) is a medical condition in which the brain swells with fluid because of the physiological effects of traveling to a high altitude. It generally appears in patients who have acute mountain sickness and involves disorientation, lethargy, and nausea among other symptoms.
Reperfusion injury, 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 ...
The cerebral cortex is the outer covering of the surfaces of the cerebral hemispheres and is folded into peaks called gyri, and grooves called sulci. In the human brain, it is between 2 and 3-4 mm. thick, [ 8] and makes up 40% of the brain's mass. [ 2] 90% of the cerebral cortex is the six-layered neocortex whilst the other 10% made up of three ...
ambiguous meaning, write out "days" or "doses". D5LR. dextrose 5% in lactated Ringer's solution ( intravenous sugar solution ) D5NS. dextrose 5% in normal saline (0.9%) ( intravenous sugar solution ) D5W, D 5 W. dextrose 5% in water ( intravenous sugar solution ) D10W, D 10 W. dextrose 10% in water ( intravenous sugar solution )
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40% at 3,000 metres (10,000 ft) [ 1][ 2] Altitude sickness, the mildest form being acute mountain sickness ( AMS ), is a harmful effect of high altitude, caused by rapid exposure to low amounts of oxygen at high elevation. [ 1][ 2][ 3] People can respond to high altitude in different ways. Symptoms may include headaches, vomiting, tiredness ...