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Acute hypocalcaemia

Authoring team

Commonly:

  • hyperventilation inducing a transient hypocalcaemia; serum total calcium levels normal

Less commonly:

  • alkalosis due to alkali infusion to treat acidosis, salicylate poisoning
  • high phosphate:
    • rapid tumour lysis - e.g. cytotoxic treatment of leukaemia
    • excessive phosphate intake - e.g. phosphate containing enemas, excessive oral phosphate (infant milk feeds), parenteral phosphorous
  • high citrate from massive blood transfusion if liver cannot metabolise adequately
  • acute pancreatitis

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