Disorders of Magnesium: Hypomagnesemia
Hypomagnesemia is defined as serum [Mg2+] < 1.7 mg/dL. The prevalence of hypomagnesemia in outpatient and hospitalized patient population is 6–12 %. The incidence of hypomagnesemia is approximately 65 %. The causes of hypomagnesemia fall into four major categories: (1) decreased intake of Mg2+; (2) decreased intestinal absorption; (3) increased urinary losses; and (4) drugs. In addition to these causes, transcellular transport of Mg2+ into the cell is caused by infusion of glucose or epinephrine.
KeywordsHypomagnesemia Familial hypomagnesemia with hypercalciuria and nephrocalcinosis (FHHNC) Familial hypomagnesemia with hypercalciuria and nephrocalcinosis with ocular manifestation Familial hypomagnesemia with secondary hypocalcemia Isolated dominant hypomagnesemia with hypocalciuria Isolated recessive hypomagnesemia (IRH) with normocalciuria Hypomagnesemia-induced hypocalcemia Hypomagnesemia-induced hypokalemia
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