Short QT Syndrome (SQTS)

Short QT Syndrome (SQTS) is a rare inherited cardiac channelopathy marked by an abnormally short QT interval on ECG and a heightened risk of atrial and ventricular arrhythmias. Individuals may experience palpitations, fainting, or sudden cardiac arrest, sometimes without prior warning. Genetic forms often involve pathogenic variants affecting potassium or calcium channels that alter cardiac repolarization.