What is hyperoxic anoxia?
955296
There are a number of terms that are used to describe this type of brain injury. In the clinical and research literature the total deprivation of oxygen is called anoxia. Diminished, but not total lack of oxygen to the brain is termed hypoxia. Where there is evidence of a combination of reduced blood flow (i.e. ischemia) and oxygen, the term hypoxic-ischemic insult is often used. Hypoxic-ischemic encephalopathy (HIE) is a term often used by neonatologists and pediatricians to describe a condition that is seen in both full term and low birth weight infants who often have a variety of medical and neurological problems associated with pre, post or perinatal events(please see section following on "Anoxic Injury in the Newborn"). In this section the term anoxia will be used to describe either a condition of reduced or total deprivation of oxygen to the brain. \n\nNormal brain metabolism requires both oxygen and glucose. Oxygen metabolizes glucose which in turn, provides energy for living cells. The brain represents approximately 2% of the body's total weight yet accounts for 20% of the body's total oxygen utilization and 65% of it's glucose needs (Lundgren, 1986). Anoxia damages nerve cells in the cortex where cells originate (as compared to the damage to the axons and white matter fiber pathways that are affected in TBI). Loss of consciousness occurs within 10-15 seconds of cardio-pulmonary arrest. Irreversible brain damage can occur within 5 minutes. Different brain structures have different metabolic needs. The gray matter of the brain, particularly the frontal lobes have the highest metabolic requirements. The metabolic rates of the occipital, parietal, and temporal lobes along with the basal ganglia and cerebellum are lower. The brainstem has the lowest metabolic need. An example of how diminished metabolism in the frontal lobes impacts an individual: consider the published reports of experienced high altitude mountain climbers who make uncharacteristic errors in judgment (part of the role of frontal lobe functioning). Errors in judgement and problem solving are common symptoms of mild anoxic events. When there is a severe lack of oxygen to the brainstem function, regulation of breathing, heart rate, etc may stay relatively preserved (brainstem has the lowest metabolic requirements) but cortical, basal ganglia and cerebellum functions may be severely compromised. A discussion of the neurological and general physiological mechanisms of anoxia is beyond the scope of this discussion. Please see Perkin and Ashwal (1999) for a detailed description of hypoxic-ischemic brain damage in infants and older children.
279584
Hyperventilation or hyperpnea is the state of breathing faster or deeper than usual. This usually depletes or reduces the amount of carbon dioxide in the blood leading to respiratory alkalosis. This causes various symptoms such as numbness or tingling in the hands, feet and lips, lightheadedness, dizziness, headache, chest pain, slurred speech and sometimes fainting. In normal breathing, both the depth and frequency of breaths is varied by the neural system in order to supply appropriate levels of oxygen to the body's tissues. This is mainly done by measuring the carbon dioxide content of the blood; normally, a high carbon dioxide concentration signals a low oxygen concentration, as we breathe in oxygen and breathe out carbon dioxide at the same time, and the body's cells use oxygen to burn fuel molecules to carbon dioxide.\n\nThe gasses in the alveoli of the lungs are nearly in equilibrium with the gasses in the blood. Normally, less than 10% of the gas in the alveoli is replaced each breath. Deeper or quicker breaths exchange more of the alvolar gas with air and have the net effect of drawing more carbon dioxide out of the body, since the carbon dioxide concentration in normal air is very low.\n\nThe resulting low concentration of carbon dioxide in the blood is known as hypocapnia. Since carbon dioxide is held in the blood mostly in the form of carbonic acid, hypocapnia results in the blood becoming alkaline, i.e. the blood pH value rises. (In the normal person, this alkalosis would automatically be countered by reduced breathing, but for various reasons this doesn't happen when the causes of hyperventilation mentioned above are present.)\n\nIf carbon dioxide levels are high, the body assumes that oxygen levels are low, and accordingly the brain's blood vessels dilate, to assure sufficient blood flow and supply of oxygen. Conversely, low carbon dioxide levels (e.g. from hyperventilation) cause the brain's blood vessels to constrict, resulting in reduced blood flow to the brain and lightheadedness. Doctors sometimes artificially induce hyperventilation after head injury to reduce the pressure in the skull, though the treatment has obvious risks
239929
Hct is the proportion of blood volume that is occupied by red blood cells.  Conditions that raise it may be a chronic state of hypoxia, where the body grows more rbc's, such as high altitude, and lung problems, even sever dehydration.  Lower hct is typically anemia or bloodloss.
12221
Carbon monoxide keeps hemoglobin in the blood from carrying oxygen.
663852
you can give this a try :)\n\nwww.aarc.org/headlines/home_oxygen_issue/letter.html
608644
aerobic is with oxygen. anerobic is without.
668013
http://www.edgesystem.net/oxymax.html\nhttp://www.diamondskin.com/DiamondSkin_Oxygen_Therapy.html\nhttp://www.asseenontv.com/prod-pages/oxygen_facial_system.html\nhttp://www.promolife.com/products/oxybar.htm
381289
you get two oxygen free radicals
519170
if there is too much oxygen, that will over excite the fish and they can die. That is the case with everything. even if we are exposed to excess oxygen, we can die
140778
Oxygen Sensor - an electronic device that measures the proportion of oxygen in the gas.
534827
Dissolved oxygen levels usually range from 6 to 14 mg/L. \n\nRemember, ambient temperature will have a significant impact on your readings, because the solubility of oxyden in water falls with a rise in temperature. So you'll need to take that into consideration while writing up your findings. \n\nI suggest that you take some readings at different times of the day, to establish a baseline. \n\nHope that helps.
672620
2. An oxygen molecule moving at 560 meters/second.
249172
i think that is oxygen depravation
446201
Hypervenilating removes extra carbon dioxide from the blood.  Our urge to breathe is not driven by lack of oxygen, but by extra CO2 building up; this also affects blood pH, as it forms carbonic acid, so low pH stimulates breathing, too.\n\nThus, the person can hold their breath longer, after hyperventilating.  he / she will not be forced to surface to breathe, to relieve the urge to remove more CO2.\n\nHowever, they will have disturbed their blood pH, which can cause the brain to malfunction, leading to loss of muscular control, and to drowning.\n\nThey might get low on oxygen, too.  Normally, we carry plenty of oxygen in our bodies; even the air we breathe out has plenty of oxygen in it, and can be forced into the lungs of an unconscious person, in "mouth to mouth resuscitation".  IRC the proper name for this is "expired air resuscitation" but I am not sure.
598955
not drowning and suffocating...you will feel drowsy and come to a never ending sleep...\n\nCO, binds to the haemogloin in blood which is responsible for carry oxygen throughout the body...\n\nCO has higher affinity to Haemoglobin than O2, so it binds faster and blocks the binding of O2. its like someones smothering you but u cant feel it.
737154
Oxygen gets you high. In a catastrophic emergency, you're taking giant panicked breaths. Suddenly you become euphoric, docile. You accept your fate. It's all right here. Emergency water landing - 600 miles an hour. Blank faces, calm as Hindu cows.
109626
the production of alcohol is an anoxic reaction, if oxygen is present alcohol isn't produced. This is usually achieved by putting the fermentation mixture in a sealed flask with a water stopper in the top, this allows the escape of CO2 produced in the fermentation but doesn't allow O2 in the air to dissolve in the water