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 ...

Complex: The combination of multiple waves grouped together. The only main complex on an ECG is the QRS complex. Point: There is only one point on an ECG termed the J point, which is where the QRS ...

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 ...

Upon review of this body and the described ECG findings, certain common patterns ... Studies investigating QRS-complex abnormalities in association with cocaine use reported widened QRS-complex ...

The goal of ECG interpretation in athletes is to classify the ECG as: (1) ‘normal’—no further evaluation needed or (2) ‘abnormal’—further evaluation needed. Normal ECGs include common, ...