When the QRS complexThe electrical representation of ventricular depolarization; the atrial repolarization is also a part of the QRS. ECG interpretation relies heavily on the QRS complex. The QRS complex represents the depolarization of the ventricles. The repolarization of the atria is also... following a premature complexA QRS complex that comes earlier than expected. 1. Six Second ECG Guidebook (2012), T Barill, p. 203 occurs before expected; occurs with PACs (a full compensatory pauseRefers to the period between two sinus beats with a premature complex in between. If the period in between the QRS complexes is twice the normal R-R interval, a compensatory pause has occurred; the presence of a compensatory pause strongly... occurs with a PVCA wide QRS complex that arrives early is called a premature ventricular complex (PVC). A PVC has a width of 0.12 seconds or longer. The elongated period of ventricular depolarization is caused by an abnormal, less efficient pathway of ventricular...).
1. Six Second ECG GuidebookA Practice Guide to Basic and 12 Lead ECG Interpretation, written by Tracy Barill, 2012 Introduction The ability to correctly interpret an electrocardiogram (ECG), be it a simple six second strip or a 12 lead ECG, is a vital skill... (2012), T Barill, p. 200