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Wandering Atrial Pacemaker | Reference Guide


EKG Strip

ecg rhythm strip for reference guide


EKG Features

Rate: Normal (60-100 bpm)
Rhythm: May be irregular
P Wave: Changing shape and size from beat to beat (at least three different forms)
PR Interval: Variable
QRS: Normal (0.06-0.10 sec)
The electrical impulses causing the atrial activity are moving or wandering. Observe at least three different shaped P waves. No other changes in the tracing may be observed. The rhythm may or may not be regular.
Wandering atrial pacemaker is an arrhythmia originating in shifting pacemaker sites from the SA node to the atria and back to the SA node. On an ECG, the p-waves reflect the pacemaker shifts by shape variations. The PRI interval may vary from one beat to the next.
External Source: http://jan.ucc.nau.edu/~daa/heartlung/lectures/ekg3.html
Nau.edu


Authors and Reviewers

Authored by Thomas O'Brien
EKG tracings reviewed by Dr. Pedro Azevedo, MD, Cardiology
Medically reviewed by Dr. Jonathan Keroes, MD, Cardiology
Last Update: 11/8/2021

Sources



Return to EKG Reference Guide Index


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