Magnesium deficiency and dilated cardiomyopathy diagnosed peripartum

Adam Morton1,2

  • 1Departments of Obstetric Medicine and Endocrinology, Mater Health, South Brisbane, QLD, Australia.

Obstetric Medicine
|June 19, 2025
PubMed

Insights

Pregnancy-related dilated cardiomyopathy may be linked to low magnesium levels (hypomagnesaemia). This condition, characterized by heart muscle enlargement, warrants further investigation into magnesium

Area of Science:

  • Cardiology
  • Obstetrics
  • Biochemistry

Background:

  • Dilated cardiomyopathy during pregnancy poses significant risks for maternal health.
  • Low magnesium levels (hypomagnesaemia) are linked to arrhythmias and heart conditions in the general population.
  • Pregnancy naturally lowers serum magnesium, and intracellular deficiency can occur even with normal serum levels.

Purpose of the Study:

  • To present cases of peripartum dilated cardiomyopathy associated with hypomagnesaemia.
  • To review the existing literature on magnesium deficiency and dilated cardiomyopathy.
  • To propose future research directions and discuss management implications.

Main Methods:

  • Case study presentation of three women with peripartum dilated cardiomyopathy and hypomagnesaemia.
  • Comprehensive literature review on magnesium's role in cardiovascular health and dilated cardiomyopathy.
  • Discussion of potential research avenues and clinical management strategies.

Main Results:

  • Three cases illustrate the occurrence of dilated cardiomyopathy in the peripartum period concurrent with hypomagnesaemia.
  • Literature review supports an association between magnesium deficiency and dilated cardiomyopathy.
  • Hypomagnesaemia may be a contributing factor to dilated cardiomyopathy in pregnancy.

Conclusions:

  • Hypomagnesaemia may play a role in the development of peripartum dilated cardiomyopathy.
  • Further research is needed to establish a causal link and explore magnesium repletion strategies.
  • Considering magnesium status may be important in managing pregnant women with dilated cardiomyopathy.

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