Wandering atrial pacemaker produces a supraventricular rhythm in which a pacemaker impulses originate from two or more sites in the SA node, atria, or AV junction and discharge at a rate of 60 to 100 bpm.
1. Chronic lung disease
2. Valvular heart disease
1. P wave morphologies vary because impulses originate from different sites.
2. P-P intervals may also vary because each impulse travels through the atria via a slightly different route.
3. There is one P wave fore every QRS complex.
4. The overall atrial and ventricular rates remain between 60-100 bpm.
5. QRS complexes are usually unchanged. They are narrow as long as ventricular depolarization is undisturbed.
Treatment of the underlying cause