{Reference Type}: Case Reports
{Title}: Severe hypercalcemia from multiple myeloma as an acquired cause of short QT.
{Author}: Liu Y;Pérez-Riera AR;Barbosa-Barros R;Daminello-Raimundo R;de Abreu LC;Nikus K;Baranchuk A;
{Journal}: J Electrocardiol
{Volume}: 51
{Issue}: 6
{Year}: Nov 2018 0
{Factor}: 1.38
{DOI}: 10.1016/j.jelectrocard.2018.07.020
{Abstract}: An otherwise healthy 64-year-old man with recently diagnosed multiple myeloma was admitted to hospital with hypercalcemia and renal failure. Despite his electrocardiogram showing short QT/QTc intervals, he was admitted without cardiac monitoring. He died suddenly a few hours later, likely from a fatal arrhythmia. This case illustrates that pronounced QT shortening from hypercalcemia is an underappreciated malignant finding that can portend a significant risk for arrhythmia and sudden cardiac death. In addition, we also discuss the causes of hypercalcemia associated short QT/QTc intervals and its ECG features.