Wandering atrial pacemaker

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Wandering pacemaker
NSR-atrial fusion-AJR-shifting pacemaker.png
Shifting (wandering) pacemaker
SpecialtyCardiology

Wandering atrial pacemaker (WAP) is an atrial arrhythmia that occurs when the natural cardiac pacemaker site shifts between the sinoatrial node (SA node), the atria, and/or the atrioventricular node (AV node). This shifting of the pacemaker from the SA node to adjacent tissues is identifiable on ECG Lead II by morphological changes in the P-wave; sinus beats have smooth upright P waves, while atrial beats have flattened, notched, or diphasic P-waves. It is often seen in the very young, very old, and in athletes, and rarely causes symptoms or requires treatment.[1]

Cause[edit]

References[edit]

  1. ^ Huff, J. (2016). ECG workout: Exercises in arrhythmia interpretation (7th ed.). Philadelphia, PA: Wolters Kluwer.

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Classification