Nodal/Junctional Ectopic Beat C7    

These beats originate from within the region of the AV node, resulting in an absence of p-waves, or abnormal  p-waves with PR intervals of <.12 secs. (these retrograde p-waves are typically inverted in leads II, III, and AVF).  Ventricular conduction is usually normal resulting in a normal QRS.  These beats are followed by a compensatory pause

Rhythm Strip

12 Lead EKG
Atrial Paced Beat 12 Lead EKG