A combination of the Q wave, R wave and S wave, the “QRS complex” represents ventricular depolarization. This term can be confusing, as not all ECG leads contain all three of these waves ...

A junctional rhythm occurs when the electrical activation of the heart originates near or ... Because the normal ventricular conduction system (His-Purkinje) is used, the QRS complex is frequently ...

The resting electrocardiogram (ECG) furnishes essential information for the diagnosis, management, and prognostic evaluation of patients with congestive heart failure (CHF). Almost any ECG ...

While everybody’s heart has ... s electrical system to complete one cycle of contraction and relaxation). The authors explain that the significance of the observed correlation between reduced ejection ...