Wandering pacemaker

Wandering pacemaker

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ICD9 = ICD9|427.89
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In cardiology, a wandering pacemaker is an atrial arrhythmia that occurs when the natural cardiac pacemaker site shifts between the SA node, the atria, and/or the AV node. This shifting of the pacemaker from the SA node to adjacent tissues is manifested electrocardiographically by transient changes in the size shape and direction of the P waves.A wandering pacemaker is usually caused by varying vagal tone. With increased vagal tone the SA Node slows,allowing a pacemaker in the atria or AV Nodal area,which may become slightly faster briefly. After vagal tone decreases the SA Node assumes pacemaker.

External links

* [http://www.clevelandclinicmeded.com/diseasemanagement/cardiology/atrialfibrillation/atrialfibrillation.htm Cleveland Clinic Atrial Fibrillation Management]
* [http://rnceus.com/ekg/ekgwap.html RnCeus Health Interactive]


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