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What is the principle of the cyanmethemoglobin method?
Colorimetric method where blood is mixed with solution containing potassium ferricyanide and potassium cyanide. Potassium ferricyanide oxidizes iron to form methemoglobin and potassium cyanide then combines with methemoglobin to form cyanmethemoglobin.
When was Methemoglobinemia discovered?
Methemoglobinemia was first described in 1943 by a physicians Alfred Stengel and Albert Mason of the University of Pennsylvania. They identified it as a condition where hemoglobin is unable to carry oxygen effectively due to the presence of excess methemoglobin in the blood.
Type of hemoglobin contains iron in the ferric state?
Methemoglobin is the type of hemoglobin that contains iron in the ferric state. This occurs when hemoglobin is unable to bind with oxygen and becomes oxidized, resulting in a form of hemoglobin that cannot effectively transport oxygen to tissues.
What is it called when you mix a primary color and a secondary color together?
When you mix a primary color and a secondary color together, it is called a tertiary color. This occurs by blending two adjacent colors on the color wheel.
What happens if you mix 1 primary color with a secondary color?
Mixing a primary color with a secondary color will create a tertiary color. Tertiary colors are formed by combining a primary color with an adjacent secondary color on the color wheel.
Hemoglobin that has undergone oxidation of the iron is known as?
methemoglobin
Why was your blood dark brown after your blood draw?
Could be Methemoglobin. This is very rare.
What is methanoglobnemia?
Methanoglobnemia is mispelled, it's actually methemoglobinemia Methemoglobinemia is a blood disorder in which an abnormal amount of methemoglobin -- a form of hemoglobin -- is produced. Hemoglobin is the molecule in red blood cells that distributes oxygen to the body. Methemoglobin cannot release oxygen. In methemoglobinemia, the hemoglobin is unable to release oxygen effectively to body tissues.
What has the author George H Barrows written?
George H. Barrows has written: 'Methemoglobin reduction in vitamin K deficient chicks'
What precaution or side effects should you be aware of when administering cyanide antidotes?
Sodium nitrite can increase methemoglobin levels, which will decrease blood oxygenation
Why do alpha streptococci produce a green color on blood agar?
All of the different streptococci are organized into three groups based on how they break down red blood cells, a process called hemolysis. The group of streptococci that perform alpha hemolysis are called alpha streptococci. In alpha hemolysis, the hydrogen peroxide produced by the streptococci oxidizes the blood's hemoglobin, turning it into methemoglobin, which is green in color.
Why do alpha streptococci produce green color on blood agar?
All of the different streptococci are organized into three groups based on how they break down red blood cells, a process called hemolysis. The group of streptococci that perform alpha hemolysis are called alpha streptococci. In alpha hemolysis, the hydrogen peroxide produced by the streptococci oxidizes the blood's hemoglobin, turning it into methemoglobin, which is green in color.
Do people have blue skin?
This question may be in reference to the Tauregs of Morocco who are known as the Blue People because of the blue clothing they wear or something known methemoglobin.
What determine whether blood is bright red or dull brick red?
The color comes from hemoglobin and the hemoglobin changes color depending upon what is bound to it. Oxyhemoglobin (hemoglobin with oxygen bound to it), deoxyhemoglobin (hemoglobin with no oxygen bound to it) is somewhat bluish. Arterial blood, which has been to the lungs and is on its way to the tissues, is usually fairly saturated with oxygen (anywhere from 95-100% of the hemoglobin is bound to oxygen), and so it looks bright red. Blood in the veins, coming back from the tissues, is less saturated (perhaps 60-80%), and so it appears darker. If there is enough unbound hemoglobin in the blood, it may actually take on a bluish hue, and that is why someone may appear blue if they are not getting oxygen. Carbon monoxide also binds to hemoglobin and results in an even brighter red color than when oxygen binds. Someone with carbon monoxide poisoning may have even brighter red blood and may have a bright red coloration to the lips and fingernails. It is also possible for the iron in hemoglobin to be changed from the ferrous (2+) to ferric (3+) state and the result is methemoglobin, which is a more brownish compound. There is normally a very small amount of methemoglobin circulating in the blood and this can be increased by exposure to certain chemicals (in particular, certain nitrogen compounds). Interestingly, methemoglobin is capable of binding cyanide, so the "antidote" for cyanide poisoning is a nitrogen compound that converts hemoglobin to methemoglobin, which then binds up free cyanide in the blood. Under normal circumstances, the blood contains primarily oxyhemoglobin and deoxyhemoglobin.
Do some people have blue skin?
This question may be in reference to the Tauregs of Morocco who are known as the Blue People because of the blue clothing they wear or something known methemoglobin.
What is the principle of the cyanmethemoglobin method?
Colorimetric method where blood is mixed with solution containing potassium ferricyanide and potassium cyanide. Potassium ferricyanide oxidizes iron to form methemoglobin and potassium cyanide then combines with methemoglobin to form cyanmethemoglobin.
What are the causes of the conginital form of mehtemoglobinemia?
One cause is a defect in the body's systems to reduce methemoglobin to hemoglobin. The other cause is a mutant form of hemoglobin called hemoglobin M that cannot bind to oxygen.
