The QT interval is a fluid measurement that is influenced by the physiological and metabolic state of the patient at the time of the ECG. Owing to multiple variables interacting at any given time, ...

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 ...

In controls, the QT interval decreased by 21 ± 19 ms ... untreated patients are at risk for more serious arrhythmias every time they stand up.” ...

and they cause a delay in the time it takes for the system to recharge after contracting. A longer QT interval results in an increased risk for a serious type of ventricular tachycardia and sudden ...

Purpose: The association of antipsychotic and antidepressant drugs with Q-T interval prolongation is reviewed. Summary: Prolongation of the Q-T interval can be of particular concern to ...