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methemoglobinemia is an uncommon clinicl problem generally caused by inherited disorders of hemoglobin metabolism or environmental toxicity from oxidizing agents. Since methemoglobin has no oxigen carrying capacity, patient with severe methemoglobinemia may have dangerous hypoxia even when arterial oxygen tension is normal.
Degree of exposure to oxidants which are benign for older individuals may produce severe methemoglobinemia in newborns. Acidosis without... |
