Hypocalcaemia may reduce the beneficial effect of magnesium treatment in aneurysmal subarachnoid haemorrhage.

@article{vandeWater2007HypocalcaemiaMR,
  title={Hypocalcaemia may reduce the beneficial effect of magnesium treatment in aneurysmal subarachnoid haemorrhage.},
  author={Jolanda M W van de Water and Walter M van den Bergh and Reinier G. Hoff and Ale Algra and Gabriel J E Rinkel},
  journal={Magnesium research},
  year={2007},
  volume={20 2},
  pages={
          130-5
        }
}
To assess whether magnesium treatment in patients with subarachnoid haemorrhage (SAH) is associated with hypocalcaemia and whether hypocalcaemia in these patients is associated with an increased risk of delayed cerebral ischemia (DCI) and poor outcome. All 137 patients randomized in the clinically controlled "Magnesium in Aneurysmal Subarachnoid Haemorrhage" trial were included. The relationship between mean serum magnesium and mean serum calcium during treatment was assessed with linear… 
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TLDR
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TLDR
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