Long on QT and low on calcium

Cardiol Young. 2004 Dec;14(6):667-70. doi: 10.1017/S1047951104006134.


Acquired lengthening of the QT interval due to hypocalcaemia is a rare cause of arrhythmia in childhood. Early recognition, rapid institution of appropriate cardiac monitoring, and replacement therapy are essential. An endocrinal work-up may be necessary to exclude primary disorders of calcium metabolism. We report four cases documenting the varied clinical spectrum in which hypocalcaemic-induced prolongation of the QT interval and arrhythmia can occur in childhood.

Publication types

  • Case Reports

MeSH terms

  • Adolescent
  • Child, Preschool
  • Female
  • Humans
  • Hypocalcemia / complications*
  • Long QT Syndrome / etiology*
  • Male