Hypocalcemia can cause characteristic changes on the electrocardiogram (ECG), reflecting the impact of reduced serum calcium levels on electrical conduction and ventricular repolarization. The main effect of hypocalcemia is prolongation of the QT interval, caused by a delay in the repolarization phase of the action potential.

ECG Changes

  • QT interval prolongation, mainly due to an increase in the duration of the ST segment

ECG in Hypocalcemia

Coming soon…

References

  1. Scheffer MK, De Marchi MFN, de Alencar Neto JN, Felicioni SP. Eletrocardiograma de A a Z. São Paulo: Manole, 2024.