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 ...

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 ...

A new radar device, developed by Dr. George Shaker and his research team at the University of Waterloo, could help detect ...

the QT interval corrected for heart rate (QTc interval) actually increased by 50 ± 30 ms. By contrast, the QT interval did not decrease in patients with LQTS (it lengthened by 4 ± 34 ms ...

Other risk factors of developing tachyarrhythmias are a prolonged QTc interval, heart rate variability and PR interval prolongation. This can be monitored by routinary ambulatory ...

Because of the increased risk of TdP, dofetilide is contraindicated if the baseline QTc interval is greater than 440 msec (500 msec in patients with a ventricular conduction abnormality).

Due to the heart rates effects, the corrected QT interval (QTc) is frequently used. The QTc is considered prolonged if greater than 450 ms in males and 470 in females and is calculated using the ...

Dr. George Shaker has huge hopes for a small radar device he developed with a team of researchers at the University of Waterloo. An engineer who has pursued the possibilities of radio waves for more ...