Premature Junctional Complex - EKG Reference Caliper Time Interval: ___ seconds RhythmRegular with premature beats RateThe underlying rate P WavePresent before, during (hidden) or after QRS, if visible it is inverted PR IntervalAbsent or short QRSNormal (0.06-0.10 sec) Notes Quick Links Sinus Atrial Junctional Ventricular Atrioventricular Pacemaker All