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Low Magnesium in 40 percent of critical care patients – increased hospital days and death - Jan 2014

Hypomagnesaemia in patients hospitalised in internal medicine is associated with increased mortality

International Journal of Clinical Practice; Volume 68, Issue 1, pages 111–116, January 2014
F. Wolf 1,friedawolf@hotmail.com, A. Hilewitz 2
1 Internal Medicine D, Rambam Health Care Campus, Haifa, Israel
2 Lennox Hill Hospital, New York, NY, USA

Background: Magnesium is the major intracellular divalent cation. Hypomagnesaemia is common among critically ill patients; it's prevalence is not known in patients admitted to general internal medicine. We sought to quantify hypomagnesaemia, and attempted to correlate it with clinical outcomes in internal medicine patients.

Materials and methods: Retrospective chart review. Hypomagnesaemic patients admitted from 1 October 2010 through 18 November 2010 compared with normomagnesaemic patients. Laboratory tests, medical and demographic data were analysed.

Results: In 627 consecutive admissions, overall frequency of hypomagnesaemia was 20.1% (87 patients). Hypomagnesaemic patients were a little older (mean age of 75) and more likely to be women (62%).
There was a significant difference in mortality between the

  • normomagnesaemic group (7.2%) and the
  • hypomagnesaemic group (17.2%) (p = 0.0067).

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There was also a significant difference for length of stay (5.00 ± 5.3 vs. 7.0 ± 8.2, p = 0.0001).
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Conclusion: The prevalence of hypomagnesaemia in internal medicine is very high. It is associated with higher mortality and longer hospital stay in our population. It can be a useful tool in predicting morbidity and mortality. Although no causal role can be defined for it at present, the low cost and minimal discomfort of measuring magnesium justifies its routine measurement and replacement in patients hospitalised in internal medicine.


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See also VitaminDWiki

Attached files

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3569 Low Mg, more likely to die.jpg admin 23 Jan, 2014 13:26 20.82 Kb 770
3568 Low Mg, in hospital longer.jpg admin 23 Jan, 2014 13:26 24.45 Kb 778
3567 Low Magnesium,.pdf PDF - 2014 admin 23 Jan, 2014 13:26 151.82 Kb 566
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