31 As such, the ECG must be examined critically for not only the length of the QT interval but also the look of the T-wave and T/U-wave morphologies. The QT interval is a fluid measurement that is ...

A prolonged QT interval has a variety of causes and can be a very serious ECG finding, as it may lead to the potentially fatal arrhythmia polymorphic ventricular tachycardia (Torsades de Pointes).

The QT interval is the time from the beginning of the QRS complex, representing ventricular depolarization, to the end of the T wave, resulting from ventricular repolarization. The normal QT ...

Several ECG markers and phenotypes have been associated ... CAST trials showed increased sudden death with few antiarrhythmics QT interval prolongation 4–6% 1.5-fold increase Myocardial ...

It has also been possible to obtain long-term ambulatory ECG recordings ... showed increased sudden death with few antiarrhythmics QT interval prolongation 4–6% 1.5-fold increase Myocardial ...