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The formation of methylene blue after the reaction of hydrogen sulfide with dimethyl-p-phenylenediamine and iron(III) at pH 0.4 – 0.7 is used to determine by photometric measurements sulfide concentration in the range 0.020 to 1.50 mg/L (20 ppb to 1.5 ppm). [62]
The most common and successful treatment used to treat patients with high levels of methemoglobinemia is the antidote methylene blue. Methylene blue is already recognized as a product of the reversible reaction fueled by NAPHD methemoglobin reductase, catalyzed by leukcomethylene, to reduce methemoglobin to hemoglobin.
Methylene blue is given as a 1% solution (10 mg/ml) 1 to 2 mg/kg administered intravenously slowly over five minutes. Although the response is usually rapid, the dose may be repeated in one hour if the level of methemoglobin is still high one hour after the initial infusion. Methylene blue inhibits monoamine oxidase, and serotonin toxicity can ...
The first-line treatment for severe methemoglobinemia is methylene blue, a medication that will reduce methemoglobin in the blood. This is possible because methylene blue oxidizes NADPH, which in turn can convert methemoglobin back to hemoglobin. [33]
Heinz bodies (also referred to as "Heinz-Ehrlich bodies") are inclusions within red blood cells composed of denatured hemoglobin. [1] [2] They are not visible with routine blood staining techniques, but can be seen with supravital staining.
Allergic-like reactions and methemoglobinemia have been documented after the use of methylene blue dye in chromopertubation. [9] These reported symptoms vary from blue discoloration of body fluids to anaphylactic shock. [10] Methemoglobinemia is a blood disorder that can potentially result in various levels of cyanosis. [11]
In hemocytometry, Türk's solution (or Türk's fluid) is a hematological stain (either crystal violet or aqueous methylene blue) prepared in 99% acetic acid (glacial) [1] and distilled water. The solution destroys the red blood cells and platelets within a blood sample (acetic acid being the main lyzing agent ), and stains the nuclei of the ...
The methylene blue allows the methaemoglobin to be converted to haemoglobin. Supportive treatment is also usually provided, depending on the severity of the toxicity, that resulted in the anaemia. [11] Ascorbic acid is used to treat methemoglobinemia, a symptom of naphthalene poisoning and is used when methylene blue is not available, or in ...