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Congenit Heart Dis. 2009 Sep-Oct;4(5):310-7. doi: 10.1111/j.1747-0803.2009.00325.x.

The spectrum of long-term electrophysiologic abnormalities in patients with univentricular hearts.

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  • 1Department of Cardiology, University of Colorado, The Children's Hospital, Aurora, Colo, USA.


Patients with univentricular hearts experience a wide range of electrophysiolgic abnormalities which tend to develop years after cardiovascular surgical interventions. Intra-atrial reentrant tachycardia (atrial flutter) in the Fontan population is the most common arrhythmia and, as such, has the largest body of literature addressing its cause and treatment. However, sinus node dysfunction, other atrial arrhythmias, ventricular arrhythmias, and cardiac dysynchrony also occur in this patient population. The purpose of this article is to review the prevalence, mechanisms, and treatment of these electrophysiologic abnormalities within the single ventricle and Fontan patient.

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