View source for Premature atrial contraction natural history

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=Overview==
Premature atrial contraction is a common form of [[supraventricular arrhythmias]] and mostly the prognosis is good.  In rare cases, severe symptoms other than palpitation may occur.

==Natural History, Complications and Prognosis==
* In general the prognosis of PACs is good, and their occurrence and prognosis is determined by the underlying condition that triggered the PACs. 
* In rare cases, a PAC can, like a PVC, trigger a more serious arrhythmia such as [[atrial flutter]] or [[atrial fibrillation]]. 
* Unlike PVC's, PAC's generally do not cause hemodynamic compromise because the conduction throughout the [[AV node]] and ventricles is normal, and the filling and contraction of the heart is therefore normal.

==References==
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[[Category:Cardiology]]
[[Category:Up-To-Date]]
[[Category:Up-To-Date cardiology]]