Abstract:Methemoglobinemia occurs when the hemoglobin molecule is oxidized from the normal ferrous state to the ferric state. Rarely, it may be a congenital condition (methemoglobin-reductase deficiency), but more frequently it is a result of oxidant exposure. Among the large number of agents that can cause acquired methemoglobinemia is prilocaine, commonly used for local anesthesia during circumcision. Methylene blue is known to be the best treatment option; however it is not always available, and there is no universa… Show more
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