PTH and Hypercalcemia: An abnormally short QT interval can be caused by several situations such ashypercalcemia, hyperkalemia, acidosis, hyperthermia, effects of drugs like digitalisor congenital short QT syndrome (SQTS).1 Primary hyperparathyroidism (PHPT) can ultimately cause short QTinterval since overproduction of parathyroid hormone (PTH) causes hypercalcemia.However, cardiac arrhythmias are uncommon and electrical storm has been rarelydescribed in patients with hypercalcemia.2