%0 Case Reports
%T Severe hypercalcemia from multiple myeloma as an acquired cause of short QT.
%A Liu Y
%A Pérez-Riera AR
%A Barbosa-Barros R
%A Daminello-Raimundo R
%A de Abreu LC
%A Nikus K
%A Baranchuk A
%J J Electrocardiol
%V 51
%N 6
%D Nov 2018 0
%M 30497751
%F 1.38
%R 10.1016/j.jelectrocard.2018.07.020
%X 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.