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 ...

Whereas someone exhibiting marked prolongation of the QT interval with QTc exceeding 500 ms who was just externally defibrillated from torsades de pointes while swimming poses negligible diagnostic ...

Padma Shri awardee and renowned cardiologist Dr. Gyan Chaturvedi has advised people to gradually reduce their diet by 40% to ...

Patients with LQTS have impaired adaptation of the QT interval in response to changes in heart rate. A study by Dr Sami Viskin and colleagues has now shown that this maladaptation is exaggerated ...

The QT/QTc intervals are normal (280/440 msec). Prominent atrial waveforms occur before each QRS complex (^); they are negative in leads I and aVF and positive in leads aVR and V1 (^). A second ...

Possible neurotoxicity with lithium: monitor, discontinue if occurs. Caution with drugs that prolong the QT interval (eg, Class 1A [eg, procainamide, quinidine, disopyramide] or Class 3 ...