Whats the difference between Long QT and Short QT Syndromes?
As far as clinical significance is concerned, the difference is marginal. If the duration of QT is short, it is short QT syndrome and vice versa with the long QT version. An overview: The “QT” interval is found on an electrocardiogram (ECG). The QT represents the electrical activity of the heart. It is measured from the initiation of the QRS complex to the end of the T-wave. The duration of the QT-interval in normal people at a heart rate of 60 beats per minute is between 350 and 440 milliseconds. # Short QT Syndrome: Short QT Syndrome (SQTS) is a congenital abnormality in the electrical activity within the muscle cells of the heart. SQTS is named because of it diagnostic characteristics on the electrocardiogram (ECG). In patients with SQTS the duration of the QT interval has been between 210 and 340 milliseconds. The short QT-interval found in SQTS increases the risk of an arrhythmia originating in either the small chambers of the heart (atria) or in the big chambers of the heart (ven
