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 ...

An Osborne wave can also occur from hypercalcemia. Hypercalcemia shortens the QT interval. Dextrocardia shows negative QRS complex in lead I with negative P and T wave in this lead. There is low ...

but reflects early repolarisation with J point elevation and a high take-off with downsloping ST segment followed by a negative T wave (figure 10). The most commonly used voltage criterion for LVH is ...

Normally, there is no electrical activity (flat ECG) between ventricular depolarization (reflected by the QRS complex) and repolarization (T wave), corresponding to the ST segment, because all ...