Oxygen level the concentration of oxygen. Medical search. Frequent questions

Preductal and postductal oxygen saturation measurements via pulse oximetry will often show a 10% or higher gradient difference, which is dependent on the magnitude of left-to-right shunting at the foramen ovale (with preductual saturations being higher). (medscape.com)
The system enables simultaneous multicontrast imaging of hemoglobin concentration, blood flow speed, blood oxygen saturation, and lymphatic concentration. (photonics.com)
To test the independent system, team members performed multifunctional microscopic imaging of small animals in vivo evaluating hemoglobin concentration, blood flow speed, oxygen saturation, and lymphatic concentration. (photonics.com)
Results The segmental A/B ratio was negatively correlated with FEV 1 , vital capacity (VC), forced expiratory flow between 25% and 75% of VC (FEF 25/75 ) and arterial oxygen saturation (SpO 2 ) and positively with the residual volume: total lung capacity ratio (RV:TLC) and respiratory system resistance (Rrs). (bmj.com)

The Owgels 5L Oxygen Concentrator is a high performance O2 Concentrators with an intelligent alarm system for power failure, compressor alarm, overheating alarm, low flow rate alarm, low purity alarm. (senior.com)
Make sure to add on some oxygen tubing to use your new concentrator. (promolife.com)
This allows you to regulate air flow from a high output oxygen concentrator. (promolife.com)
The Invacare Platinum 5LPM is a very affordable, extremely reliable 5 LPM in home - stationary oxygen concentrator unit that is "MADE IN AMERICA " in either the Florida or Ohio assembly plant. (oxygenplusmedical.com)
This Oxygen Concentrator has an adjustable flow meter which ranges from .5 LPM to 5 LPM that is adjustable in ½ LPM increments which can accommodate the various needs of most oxygen end users. (oxygenplusmedical.com)
This Oxygen Concentrator will provide you with several years of safe, reliable and trouble free service and is designed to operate effortlessly and efficiently on a 24/7 basis. (oxygenplusmedical.com)
The maintenance for the Invacare Platinum Oxygen Concentrator is exceptionally minimal and designed to be easy to maintain. (oxygenplusmedical.com)
On either side of the Oxygen Concentrator is a foam filter that is placed inside a recess. (oxygenplusmedical.com)
This oxygen concentrator is designed for home settings or at any location where a long life stationary unit can be used which operates on 120 VAC and 60 HZ. (oxygenplusmedical.com)
SenseO2 (Oxygen percentage Indicator) is an optional feature available for the Invacare Platinum Oxygen Concentrator. (oxygenplusmedical.com)
The built in sensor ultrasonically measures the purity of output oxygen, to ensure that a safe oxygen level is always maintained while the Oxygen Concentrator is running. (oxygenplusmedical.com)
If the output of the Oxygen Concentrator drops below 87%, the green "normal" light will switch to a yellow "low o2" light will turn on. (oxygenplusmedical.com)
The Oxygen Concentrator will provide a visual and audible alarm to indicate that there is an unsafe condition. (oxygenplusmedical.com)
HomeFill II Oxygen Compressor - The Invacare HomeFill II complete home oxygen system will revolutionize ambulatory oxygen by allowing patients to fill their own high-pressure cylinders from a concentrator. (oxygenplusmedical.com)
The HomeFill is a multi-stage pump that simply and safely compresses oxygen from a specially equipped Invacare 5-liter or 10-liter concentrator into oxygen cylinders in size ML4, ML6 and M9(c). (oxygenplusmedical.com)
SenseO2 (Low Purity Sensor) is a standard feature for the Invacare PerfectO2 Oxygen Concentrator. (oxygenplusmedical.com)
for example, E1390 Oxygen concentrator, single delivery port, capable of delivering 85 percent or greater oxygen concentration at the prescribed flow rate . (aapc.com)

Eutrophication results in excessive plant growth, sometimes reducing dissolved oxygen below levels that some fish species require. (usgs.gov)

Germination of selected vegetable seeds including corn (Zea mays L.), squash (Cucurbita pepo L.), and tomato (Solanum lycopersicum L.) was studied in water with different concentrations of hydrogen peroxide (H2O2) solution ranging from 0, 0. (researchgate.net)
The Live O2 machine which will be used to create, store and deliver the two different concentrations of oxygen is comprised of an oxygen machine, storage bag with two compartments, a delivery system with a mask and a switch to change which concentration of oxygen is being delivered. (ukessays.com)

The sudden injection of highly reactive free oxygen, toxic to the then-mostly anaerobic biosphere, may have caused the extinction of many existing organisms on Earth - then mostly archaeal colonies that used retinal to utilize green-spectrum light energy and power a form of anoxygenic photosynthesis (see Purple Earth hypothesis ). (wikipedia.org)
In ponds or tanks with algae or plants, oxygen, derived from photosynthesis, is produced during the day when sunlight shines on the plants in the water. (ufl.edu)
Dissolved oxygen increases during daylight hours when photosynthesis is occurring and decreases at night when respiration continues but photosynthesis does not. (ufl.edu)
A decrease in oxygen production is caused by incidents such as cloudy weather and plant or algae die-offs that shut down photosynthesis. (ufl.edu)
During cloudy weather, the intensity of light reaching surface waters is greatly diminished, resulting in a marked decrease in oxygen production from photosynthesis. (ufl.edu)
Because photosynthesis and oxygen production only occur near the surface, water in the deep layer becomes devoid of oxygen and develops an oxygen demand. (ufl.edu)
Conversely, summer droughts often result in excessive algal growth due to low river flows and high sunlight, which increase oxygen concentrations in the water due to photosynthesis. (ceh.ac.uk)
Algae and underwater grasses release oxygen during photosynthesis. (chesapeakebay.net)

The diagnosis of Fanconi syndrome is made based on tests that document the excessive loss of substances in the urine (eg, amino acids, glucose, phosphate, bicarbonate) in the absence of high plasma concentrations. (medscape.com)
Oxygen flows from areas with high partial pressure of oxygen (PO2, also known as oxygen tension) to areas of lower PO2. (wikipedia.org)
Ammonia dissolves readily in water to form ammonium hydroxide a corrosive, alkaline solution at high concentrations. (cdc.gov)
It is lighter than air and flammable, with difficulty, at high concentrations and temperatures. (cdc.gov)
Eutrophication, caused by high concentrations of nutrients, is degrading streams ( p. 17 , 18 ). (usgs.gov)
The Respironics Millennium M10 delivers up to 10LPM of high quality oxygen for many high flow applications. (promolife.com)
Low flows of high-quality oxygen are necessary for medical-gra. (promolife.com)
This physical phenomenon puts the fish in double jeopardy because at high water temperatures their metabolic rates increase, hence their physiologic demand for oxygen increases. (ufl.edu)
In contrast, other metals were unaffected by this process and stayed at high levels in seawater. (sciencedaily.com)
This period in Earth's past was characterised by high variation in sea levels, and rapidly alternating conditions of global cooling and warming. (abc.net.au)
However, even at the warmest temperatures seen in the Bay (around 91 degrees Fahrenheit), water is capable of having dissolved oxygen concentrations of 6 to 7 mg/L. So, although high temperatures can influence dissolved oxygen levels, the temperature is not the only cause of low-oxygen areas found in the Bay each summer. (chesapeakebay.net)
When arsenic levels are found to be too high at a specific location, it may be necessary to treat water to remove it. (environmental-expert.com)
This is followed by rapid loss of consciousness at high concentrations. (who.int)
If you have a problem with your kidneys or your parathyroid glands, the phosphate levels in your urine may be too high or too low. (medlineplus.gov)
Your results may include guidelines for normal, low, and high levels, but your provider will consider your health, age, and other factors when deciding what is normal for you. (medlineplus.gov)
Errors with the Fick CO result from a leaky gas collection apparatus, inaccuracies in the measurement of inhaled and exhaled oxygen concentrations (these are particularly common when high levels of oxygen are used), and from errors in the calculations and/or measurements of blood oxygen contents. (medscape.com)

The combination of elevated nutrient concentrations, water temperatures, and sunlight, alongside low river flows, can result in algal blooms which shade out and outcompete submerged aquatic plants. (ceh.ac.uk)
Also, as water temperatures increase, the oxygen solubility decreases, which can further reduce DO concentrations. (ceh.ac.uk)
This was possibly caused by some colossal geological activity in what is today the Atlantic Ocean that would have elevated atmospheric carbon dioxide concentrations, increased global temperatures, and acidified oceans. (abc.net.au)
Dam reservoirs can elevate water temperatures, reduce oxygen, and breed toxic algae which contain dangerous neurotoxins. (actionnetwork.org)

Utilizing springs as vibration mounts instead of rubber mounts in previous versions, this means that Platinum is significantly quieter than earlier models of Oxygen Concentrators which were louder, heavier and cumbersome. (oxygenplusmedical.com)
The sound level of the Platinum is only 50dbA and is significantly quieter than earlier models of oxygen concentrators which were louder, heavier and cumbersome. (oxygenplusmedical.com)

In respiratory physiology, the oxygen cascade describes the flow of oxygen from air to mitochondria, where it is consumed in aerobic respiration to release energy. (wikipedia.org)
The amount of oxygen that is available to the cells while they are producing ATP to drive the body is important, because if there is not enough oxygen available for aerobic respiration, than anaerobic respiration will take place. (ukessays.com)
Also known as hydrocyanic acid (CAS Registry Number 74‐90‐8) or HCN, hydrogen cyanide is a rapid‐acting lethal agent that inhibits aerobic respiration at the cellular level, preventing cells from utilizing oxygen. (who.int)

A new study published this month in American Journal of Physiology - Regulatory, Integrative and Comparative Physiology looked at what happens in the egg when a chicken fetus was exposed to low oxygen (hypoxia) conditions. (scienceblogs.com)
In mammals, this can occur as a result of maternal hypoxia, preeclampsia as well as anemia in the fetus resulting in less red blood cells that can carry oxygen. (scienceblogs.com)

Perovskite oxides are active room-temperature bifunctional oxygen electrocatalysts in alkaline media, capable of performing the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) with lower combined overpotentials relative to their precious metal counterparts. (osti.gov)
Areas in the Bay that have low dissolved oxygen levels are the result of a complex interaction of several natural and man-made factors, including temperature, nutrient pollution , water flows, and the shape of the Bay's bottom. (chesapeakebay.net)
Temperature limits the amount of oxygen that can dissolve in water: water can hold more oxygen during winter than during the hot summer months. (chesapeakebay.net)
The AQM-102 is designed to measure CO2 concentration, air temperature and relative humidity with visible and audible alarms. (omega.com)

The Great Oxidation Event ( GOE ) or Great Oxygenation Event , also called the Oxygen Catastrophe , Oxygen Revolution , Oxygen Crisis or Oxygen Holocaust , [2] was a time interval during the Early Earth 's Paleoproterozoic Era when the Earth's atmosphere and the shallow ocean first experienced a rise in the concentration of oxygen . (wikipedia.org)

Oxygen depletion occurs when oxygen consumption exceeds oxygen production. (ufl.edu)
Oxygen consumption, however, remains unchanged. (ufl.edu)
Degradation was assessed by oxygen consumption measurement. (europa.eu)
The estimation of oxygen consumption. (medscape.com)
The steady-state oxygen tension field of the tumor was calculated by iteratively employing Green's function method for diffusion and the Michaelis-Menten model for consumption. (lu.se)

Dizziness is an important warning sign, as it can be caused by dehydration, hyperventilation (gasping for breath), elevated carbon dioxide [CO 2 ] levels in the blood, low blood sugar, and anxiety, among other things. (cdc.gov)
Hyperventilation occurs first and increases with the dose inhaled (depends on time of exposure and concentration). (who.int)

Lethal concentrations of carbon monoxide, carbon dioxide, methane, hydrogen sulfide, and other gasses can accumulate in underground passages. (nps.gov)

The M10 is ideal for Exercise With Oxygen Therapy and other uses that require higher flows of oxygen. (promolife.com)
To use this for ozone therapy, which requires low flows of oxygen, you'll need to add on a Low Flow Oxygen Meter. (promolife.com)

Concentrations of nitrate in many wells exceed the drinking water standard ( p. 6 -8). (usgs.gov)
Nitrate concentrations in about 20 percent of all wells exceed the drinking water standard, which is the U.S. Environmental Protection Agency maximum contaminant level (MCL). (usgs.gov)
Nitrate concentrations are generally highest in shallow wells in irrigated areas, including many domestic wells and shallow public supply wells. (usgs.gov)
Nitrate concentrations in shallow wells are among the highest in the Nation ( p. 22 ). (usgs.gov)
Pesticide detections also correlate with elevated nitrate concentrations. (usgs.gov)
However, as a result of fertilizer use leveling off since 1985, nitrate concentrations may be beginning to level off in some areas. (usgs.gov)
Concentrations of nitrate and pesticides are generally similar in shallow ground water and in surface water at base flow, which occurs in winter. (usgs.gov)
Improving the health of aquatic ecosystems may require reducing nitrate concentrations in ground water. (usgs.gov)

Dissolved oxygen (DO) is the amount of oxygen that is present in the water. (chesapeakebay.net)
However, the amount of oxygen an animal needs varies depending on how large or complex the animal is and where it lives. (chesapeakebay.net)
Arsenic usually exists in two different forms, or valences, in a natural setting depending on the amount of oxygen available in groundwater. (environmental-expert.com)

In lung tissue, lipid peroxidation, reactive oxygen species, superoxide dismutase activity and reduced glutathione were all increased by WPS exposure. (who.int)
Oxygen is a highly reactive substance and must be separated from combustible materials. (lu.se)

The purpose of this experiment was to determine the relationship between tail spine length and hemoglobin levels as well as the relationship between tail spine length and heart rate. (bartleby.com)
The concentration of the hemoglobin in Daphnia is dependent on the oxygen available to them. (bartleby.com)
The authors constructed a theoretical 3D model based on histological images to analyze the influence of vessel density and hemoglobin (Hb) concentration on the response to irradiation. (lu.se)

As air is inhaled into the lungs, it mixes with water and exhaust gasses including CO2, further diluting the oxygen concentration and lowering the PO2. (wikipedia.org)
However, fish are able to absorb oxygen directly from the water into their bloodstream using gills, whereas land animals use lungs to absorb oxygen from the atmosphere. (ufl.edu)
Humans use their lungs to inhale oxygen from the air. (chesapeakebay.net)
The lungs have two primary functions, releasing carbon dioxide from the body and integrating oxygen into the bloodstream 3 . (ukessays.com)
The lungs never reach peak capacity and are not responsible for the limitation in oxygen delivered to the muscles 1 . (ukessays.com)
However as altitude increases there is less air pressure and thus less oxygen available to the lungs per diaphragm contraction cycle. (ukessays.com)

the levels of urea, creatinine, and trypsin in the plasma as well as intercellular adhesion molecule-1 (ICAM-1), receptor of advanced glycation end-products (RAGE), tumor necrosis factor- α (TNF- α ), malondialdehyde (MDA), lactic acid (LA), and 2,3-DPG in the renal tissue were increased in the shock group after 3 h of hypotension. (hindawi.com)
By contrast, mesenteric lymph drainage increased the 2,3-DPG level in the renal tissue. (hindawi.com)

The Invacare Platinum is designed to reliably deliver 87% to 93% oxygen purity levels while in operation at any setting. (oxygenplusmedical.com)

Even low airborne concentrations (100 ppm) of ammonia may produce rapid eye and nose irritation. (cdc.gov)

What are the sources of oxygen in an aquatic environment? (ufl.edu)
Fish and aquatic insects depend on adequate dissolved oxygen (DO) concentrations to survive. (ceh.ac.uk)
However, when algal blooms terminate, DO concentrations can rapidly fall as the algal biomass is consumed by respiring bacteria, and this can lead to fish kills and localised extinctions of some aquatic species. (ceh.ac.uk)

Concentrations of some long-banned but persistent organochlorine pesticides (such as DDT) or total PCBs exceed environmental guidelines for streambed sediment at 22 percent of the sites sampled. (usgs.gov)

The increasing oxygen level eventually depleted the reducing capacity of ferrous compounds , hydrogen sulfide and atmospheric methane , and compounded by a global glaciation , devastated the microbial mats around the Earth's surface. (wikipedia.org)

Ammonia is also produced naturally from decomposition of organic matter and under unusual conditions, can reach dangerous concentrations. (cdc.gov)
However, concentrations of trace elements are not elevated above naturally occurring levels in soils. (usgs.gov)
Worms and clams that live in the Bay's muddy bottom-where oxygen levels are naturally low-need dissolved oxygen concentrations of at least 1 mg/L. (chesapeakebay.net)

Previous literature has found that in 5% and 10% concentrations, ethanol tends to be a depressant as it substantially decreases the heart rate of the Daphnia (Corotto et al. (bartleby.com)

The partial pressure of oxygen drops across each barrier. (wikipedia.org)
Arterial blood gas levels (through an indwelling line [eg, umbilical arterial catheter or preductal peripheral arterial line]): To assess the pH, partial pressure of carbon dioxide (PaCO 2 ) and the partial pressure of oxygen (PaO 2 ) which might be higher in the preductal arterial line. (medscape.com)

Although his clinical status improved markedly after hyperbaric oxygen therapy, residual deficits in short-term memory persisted. (cdc.gov)
The task force used the GRADE (Grading of Recommendations, Assessment, Development and Evaluation) methods to summarise evidence and develop clinical recommendations for the use of HFNC alongside conventional oxygen therapy (COT) and noninvasive ventilation (NIV) for the management of adults in acute settings with ARF. (ersjournals.com)

The dissolved oxygen concentration of the electrolyte had a significant effect on the potential profile across the mineral bed. (cdc.gov)

They also analyzed morphological and functional differences (including diameter, blood flow, blood oxygen level, etc.) of different blood vessels in the imaging area. (photonics.com)
CONCLUSIONS: Our results indicate that an intermediate vascular density region exists where enhanced blood oxygen concentration may be beneficial for radiation response. (lu.se)

Heavy populations of plants or algae are the most important producers of oxygen in the system. (ufl.edu)
During the summer, when algae-consuming bacteria are most active, the pycnocline cuts off oxygen-deprived bottom waters from oxygen-rich surface waters. (chesapeakebay.net)

When HCWs are working longer hours without a break while continuously wearing an N95 FFR, blood CO 2 levels may increase past the 1-hour mark, which could have a significant physiological effect on the wearer (Lim et al. (cdc.gov)

The treatments composed of five vinegar concentration (10, 1, 0.1, 0.01 and 0.001%) and a control. (researchgate.net)
The result showed that application of 0.001% vinegar concentration showed significant effects in terms of percent germination and germination rate. (researchgate.net)
Thus, application of vinegar with 0.001% concentration is effective in germination of eggplant seeds. (researchgate.net)
O 2 , meanwhile, was present in the atmosphere at just 0.001% of its present atmospheric level. (wikipedia.org)

We evaluated two hydrogen peroxide products, with varying levels of stabiliser, over a range of peroxide concentrations (10-5000 ppm), in-vitro (petri dishes) seed germination and seedling growth for ten crop species. (researchgate.net)

Oxygen transfer (from the atmosphere into the water) is minimal because there is little or no wind/wave action. (ufl.edu)
Oxygen is replenished in the river by gas exchange with the atmosphere. (ceh.ac.uk)
Oxygen from the atmosphere dissolves and mixes into the water's surface. (chesapeakebay.net)

Air is typically around 21% oxygen, and at sea level, the PO2 of air is typically around 159 mmHg. (wikipedia.org)

This study was conducted to determine effect of vinegar on the germination of eggplant seeds and to identify, which vinegar concentration is suitable for seeds germination. (researchgate.net)
15% H2O2provided the optimum oxygen concentration for seed germination. (researchgate.net)
H2O2 increases germination rates by breaking down the seed coat, thus allowing the seed to take in oxygen more quickly. (researchgate.net)

Children exposed to the same levels of ammonia vapor as adults may receive larger dose because they have greater lung surface area:body weight ratios and increased minute volumes:weight ratios. (cdc.gov)
In addition, they may be exposed to higher levels than adults in the same location because of their short stature and the higher levels of ammonia vapor found nearer to the ground. (cdc.gov)

Just like humans, all of the Chesapeake Bay's living creatures-from the fish and crabs that swim through its waters to the worms that bury themselves in its muddy bottom- need oxygen to survive. (chesapeakebay.net)
With each breath, humans convert oxygen (O2) into carbon dioxide (CO2). (omega.com)

The concentration of aqueous ammonia solutions for household use is typically 5% to 10% (weight:volume), but solutions for commercial use may be 25% (weight:volume) or more and are corrosive. (cdc.gov)
The extent of injury produced by exposure to ammonia depends on the duration of the exposure and the concentration of the gas or liquid. (cdc.gov)

Fish obtain the oxygen which they need from water via their gills and for some species via their skin. (coe.int)
Sensitivity to low levels of dissolved oxygen is species specific, however, most species of fish are distressed when DO falls to 2-4 mg/L. Mortality usually occurs at concentrations less than 2 mg/L. The number of fish that die during an oxygen depletion event is determined by how low the DO gets and how long it stays down. (ufl.edu)
The lowest level represents the Bay's muddy bottom, where species need dissolved oxygen concentrations of at least 1 mg/L. The highest level is farthest up in the water column, where spawning migratory fish and their eggs and larvae need concentrations of up to 6 mg/L. (chesapeakebay.net)
Processes for the removal of iron must be approached with an understanding of the water source, iron and manganese concentration, chemical form, and any additional contaminants or species that require removal. (environmental-expert.com)

Some facilities practice oxygen supplementation during these breaks from respirator use, but there really is no need for this as the oxygen in the environment is more than enough to relieve most of the symptoms listed above. (cdc.gov)

Table 1 gives the example of a typical oxygen cascade for skeletal muscle of a healthy, adult male at rest who is breathing air at atmospheric pressure at sea level. (wikipedia.org)

Learn how much oxygen the Bay's living creatures need to survive, and what happens when low-oxygen areas form. (chesapeakebay.net)
As dissolved oxygen levels decrease, it becomes harder for animals to get the oxygen they need to survive. (chesapeakebay.net)

Growth depression was observed at higher dose levels. (inchem.org)
For each oxygen distribution, the oxygen enhancement ratio (OER) was calculated and the mean absorbed dose at which the tumor control probability (TCP) was 0.99 (D(99)) was determined using the linear-quadratic cell survival model (LQ model). (lu.se)

Under the scenario of a defective cellular energy metabolism, any process that results in a decrease in the level of ATP impairs the performance of secondary active transport mechanisms, such as those of glucose, phosphate, or amino acids. (medscape.com)
Under drought conditions, river flow speeds and turbulence can greatly decrease, and river stretches can become stagnant, which reduces this gas exchange and can result in low DO levels. (ceh.ac.uk)
A 51% decrease in D(99), from 123 to 60 Gy, was found between the lowest and highest pO(2) concentrations. (lu.se)

But worms, fish, crabs, and other underwater animals use gills to get oxygen from the water. (chesapeakebay.net)
As water moves across an animal's gills, oxygen is removed and passed into the blood. (chesapeakebay.net)
Gills work better when there is more oxygen in the surrounding water. (chesapeakebay.net)

As oxygen continues to flow down the concentration gradient from areas of higher concentration to areas of lower concentration, it must pass through barriers such as the alveoli walls, capillary walls, capillary blood plasma, red blood cell membrane, interstitial space, other cell membranes, and cell cytoplasm. (wikipedia.org)

More elaborate tests are designed to determine the renal threshold for these substances (ie, the concentration in the blood at which these substances appear in the urine) or their fractional reabsorption (ie, the percentage of the filtered load that is reabsorbed by the renal tubule). (medscape.com)

Chronic toxicity: There is NOEC for 3 trophic levels, lowest NOEC for fish 283 microg/L. (janusinfo.se)

The division between water flowing from the ocean and from the Bay's freshwater rivers and streams can also influence dissolved oxygen levels. (chesapeakebay.net)

Arterial-venous oxygen difference declines if training stoppage continues beyond 3-8 wk. (lww.com)
The Fick principle, as applied to cardiac output, relies on the recognition that the total uptake of oxygen by the peripheral tissues is equal to the product of the blood flow to the peripheral tissues and the arterial-venous oxygen concentration difference. (medscape.com)

Phosphate is made of the mineral phosphorous combined with oxygen. (medlineplus.gov)
Calcium and phosphate work together, so problems with calcium levels can mean problems with phosphate levels as well. (medlineplus.gov)
So, your results may say "phosphorous levels" or "phosphate levels. (medlineplus.gov)
If your phosphate/phosphorous levels are not normal, it doesn't always mean you have a medical condition that needs treatment. (medlineplus.gov)
Also, children often have higher phosphate levels because their bones are still growing. (medlineplus.gov)

Researchers from the University of Manchester, University of North Texas - Denton, and the Rockefeller Wildlife Refuge - Grand Chenier, Louisiana teamed up to explore the effects of exposure to low oxygen on embryonic American alligators (Alligator mississippiensis). (scienceblogs.com)
Victims who are asymptomatic several minutes after exposure do not require oxygen or antidotes. (who.int)
Where exposure has caused acute effects (convulsions, apnea), oxygen (ideally 100%)and antidotes should be administered immediately. (who.int)

Higher concentrations may cause severe eye injury. (cdc.gov)
[14] Either carbon dioxide levels were much higher at the time, providing enough of a greenhouse effect to warm the Earth, or other greenhouse gases were present. (wikipedia.org)

Increased oxygen bioavailability improved the metabolism of the seeds, which extruded 5-fold more protons from the embryos. (researchgate.net)

Anatomy8

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