Premature Atrial and Junctional Complex

Premature Atrial and Junctional Complex

Rate ------------- Depends on rate of underlying rhythm
Rhythm ------------- Irregular whenever a PAC or PJC occurs
P Waves ------------- Present in PAC, but may be hidden in the T wave. Not present in PJC
PRI ------------- Varies in PAC. Not present in PJC
QRS ------------- Normal (0.06–0.10 sec)