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Assessment and treatment

Last reviewed dd mmm yyyy. Last edited dd mmm yyyy

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Assessment of deficiency is necessary as serum levels are less useful as magnesium is more important inside than outside of the cells. Deficiency is indicated by:

  • failure to excrete more than 70% of an administered load of 20 mmol Mg within 16 hours; OR
  • failure to excrete more than 80% if 0.25 mmol per Kg iv. over 1 - 2 hours

Treatment:

  • oral magnesium salts - magnesium glycerophosphate least likely to cause diarrhoea
  • parenteral magnesium sulphate

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The content herein is provided for informational purposes and does not replace the need to apply professional clinical judgement when diagnosing or treating any medical condition. A licensed medical practitioner should be consulted for diagnosis and treatment of any and all medical conditions.

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