The QRS complex: ECG features of the Q-wave, R-wave, S-wave . . . The QRS complex (ventricular complex): normal and abnormal configurations and intervals A complete QRS complex consists of a Q-, R- and S-wave However, all three waves may not be visible and there is always variation between the leads Some leads may display all waves, whereas others might only display one of the waves
QRS Complex (ECG book) The QRS complex represents electrical vectors during ventricular depolarization; Electrical vectors (QRS complexes) most commonly change in: Disorders of the conduction system; Hypertrophy of heart chambers; Scar tissue from a myocardial infarction; Fragmentation of the QRS Complex Notch; Is a notch in the QRS complex that does not cross the