1a). The electrical events during the action potential, including initial firing (depolarization, corresponding to the QRS complex in the ECG) and subsequent return to the resting state ...

An electrocardiogram is a picture of the electrical ... The P wave indicates atrial depolarization. The QRS complex consists of a Q wave, R wave and S wave and represents ventricular depolarization.

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

Left ventricular hypertrophy can be diagnosed on ECG with good specificity ... representing ventricular depolarization, is increased. Likewise, when the myocardium is abnormally thickened ...