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Sodium thiosulfate (sodium thiosulphate) is an inorganic compound with the formula Na 2 S 2 O 3 ·(H 2 O) x. Typically it is available as the white or colorless pentahydrate (x = 5), which is a white solid that dissolves well in water. The compound is a reducing agent and a ligand, and these properties underpin its applications. [2]
Sodium thiosulfate is a classical antidote to cyanide poisoning, [10] For this purpose it is used after the medication sodium nitrite and typically only recommended for severe cases. [4] [6] It is given by injection into a vein. [4] In this use, sodium nitrite creates methemoglobinemia which removes cyanide from mitochondria. [6]
Thiosulfate: The evidence for sodium thiosulfate's use is based on animal studies and case reports: the small quantities of cyanide present in dietary sources and in cigarette smoke are normally metabolized to relatively harmless thiocyanate by the mitochondrial enzyme rhodanese (thiosulfate cyanide sulfurtransferase), which uses thiosulfate as ...
The three parts are amyl nitrite, sodium nitrite, and sodium thiosulfate. [3] The nitrites act with hemoglobin to form methemoglobin which binds cyanide. Cyanide has a preference to the ferric ion on methemoglobin over the ferric ion on cytochrome oxidase a 3 and causes cyanide to be drawn out of the mitochondria. This causes the mitochondria ...
A protective index is the toxic dose of a drug for 50% of the population (TD 50) divided by the minimum effective dose for 50% of the population (ED 50). A high protective index is preferable to a low one: this corresponds to a situation in which one would have to take a much higher dose of a drug to reach the toxic threshold than the dose ...
Sodium nitrite is used as a medication together with sodium thiosulfate to treat cyanide poisoning. [26] It is recommended only in severe cases of cyanide poisoning and has largely been replaced by use of hydroxocobalamin , [ 27 ] a form of vitamin B12 , but given in much higher doses than needed nutritionally. [ 28 ]
The medical word for low sodium levels is hyponatremia. Although it's a fairly common condition, with up to 2% of people having some degree of it, the majority of these patients have only mildly ...
Calcium channel blocker toxicity, [7] hydrofluoric acid burns Chelators such as EDTA, dimercaprol (BAL), penicillamine, and 2,3-dimercaptosuccinic acid (DMSA, succimer) Heavy metal poisoning: Cyanide antidotes (hydroxocobalamin, amyl nitrite, sodium nitrite, or thiosulfate) Cyanide poisoning: Cyproheptadine: Serotonin syndrome: Deferoxamine ...