Patients with a Fontan circulation are at a high risk of developing a variety of cardiac dysrhythmias after cardiac surgery. These dysrhythmias are most often supraventricular tachyarrhythmias (SVT), but ventricular tachyarrhythmias (VT) may also occur. Mechanisms underlying SVT are variable, including both ectopic activity and reentry. Over time, successive SVT may be caused by different mechanisms. The acute success rate of ablative therapy of AT is considerable high yet during long-term follow-up 'recurrences' frequently occur. It is most likely that these 'recurrences' are caused by a progressive atrial cardiomyopathy instead of arrhythmogeneity of prior ablative lesions.

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Keywords Ablative therapy, Atrial, Fontan procedure, Tachyarrhythmia, Ventricular
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Journal Cardiac Electrophysiology Clinics
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de Groot, N.M.S, & Bogers, A.J.J.C. (2017). Development of Tachyarrhythmias Late After the Fontan Procedure: the Role of Ablative Therapy. Cardiac Electrophysiology Clinics. doi:10.1016/j.ccep.2017.02.009