short QT syndrome

A heart conduction disease that is characterized by heart arrhythmia defined as a short QT interval on an EKG (less than 300 ms) that does not significantly change with heart rate, tall and peaked T waves, and a structurally normal heart.

Signs and symptoms

• Shortened QT interval
• Cardiac arrest
• Palpitations
• Syncope
• Paroxysmal atrial fibrillation
• Sudden cardiac death
• Bradycardia
• Atrial fibrillation
• Mildly reduced left ventricular ejection fraction
• Presyncope