Premature Ventricular Complex - EKG Reference Caliper Time Interval: ___ seconds Key Features RhythmIrregular RateThe underlying rate P WaveAbsent PR IntervalNot measurable QRSWide (> 0.10 sec), bizarre appearance NotesTwo PVCs together are termed a couplet while three PVCs in a row with a fast rhythm is ventricular tachycardia Premature Ventricular Complex EKG Reference Quick Links Sinus Atrial Junctional Ventricular Atrioventricular Pacemaker All