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a chemical element, atomic number 25, atomic weight 54.938. (See Appendix 6.) Its salts occur in the body tissue in very small amounts and serve as activators of liver arginase and other enzymes.
manganese poisoning a condition usually caused by inhalation of manganese dust; symptoms of chronic exposure include mental disorders accompanying a syndrome resembling Parkinson's disease, and inflammation throughout the respiratory system.
manganese poisoningAcute or chronic intoxication due to manganese excess.
Industrial exposure to manganese-laden fumes and dusts in mining, steel foundries, welding, and battery manufacture.
Acute—pneumonitis; chronic—psychotic or schizophrenia-like episodes, parkinsonism, movement disorders.
O2 administration, supportive care.