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.
Causes:
- Chronic lung disease
- Valvular heart disease
Characteristics:
- P wave morphologies vary because impulses originate from different sites.
- P-P intervals may also vary because each impulse travels through the atria via a slightly different route.
- There is one P wave fore every QRS complex.
- The overall atrial and ventricular rates remain between 60-100 bpm.
- QRS complexes are usually unchanged. They are narrow as long as ventricular depolarization is undisturbed.
Treatment:
Treatment of the underlying cause
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