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ECG 6: What is Wandering Atrial Pacemaker?

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What are its causes and treatment?

Wandering atrial pacemaker

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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:

  1. Chronic lung disease
  2. Valvular heart disease

Characteristics:

  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:
Treatment of the underlying cause

answered May 24, 2013 by Mike Junior Resident (2,007 points)
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