Concomitant Short QT Syndrome and Sick Sinus Syndrome: A Case Report.

Short QT syndrome (SQTS) is a rare inherited cardiac channelopathy disease resulting from mutations in potassium channels. It has been associated with several dysrhythmias, including ventricular tachycardia, ventricular fibrillation, atrial fibrillation, and atrial flutter. We report, for the first time, a case of a 19-year-old man presenting with recurrent syncope due to SQTS concomitant with sick sinus syndrome, who underwent implantation of an implantable cardioverter-defibrillator.