Whereas someone exhibiting marked prolongation of the QT interval with QTc exceeding ... patients may have different QT intervals during subsequent ECG examinations. The full extent of personal ...

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).

Contributing to its lack of identification is the fact that individuals may or may not show QT prolongation ... the evaluation for whatever reason the ECG was obtained, is a fairly limited ...

Lower heart rates also result in a longer QT interval. A quick way to distinguish a prolonged QT interval is to examine if the T wave ends beyond the halfway point between the RR interval.

ECG markers and their association with stroke ... CAST trials showed increased sudden death with few antiarrhythmics QT interval prolongation 4–6% 1.5-fold increase Myocardial infarction ...

While everybody's heart has an absolute chronological age (as old as that person is), hearts also have a theoretical ...