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Radiofrequency ablation of atrial flutter combined with closure of atrial septal defect

^a Departments of Cardiovascular and Thoracic Surgery, University Clinics of Mont Godinne, Université Catholique de Louvain, B-5530 Yvoir, Belgium
^b Department of Cardiology, University Clinics of Mont Godinne, Université Catholique de Louvain, B-5530 Yvoir, Belgium

^* Corresponding author. Tel.: +32-81-423151; fax: +32-81-423158
louagie{at}chir.ucl.ac.be

Radiofrequency ablation of atrial flutter combined with patch closure of an atrial septal defect is described. Radiofrequency energy was delivered in the cavo-tricuspid isthmus and from the inferior margin of the atriotomy down to the septal defect using a temperature-controlled multipolar radiofrequency catheter. In addition, cryolesions were applied to the junction of the ablation scar with the tricuspid annulus and with the ostium of the inferior vena cava. Sinus rhythm was restored and an electrophysiologic study conducted 2 months later confirmed the bidirectional conduction block of the cavo-tricuspid isthmus.

Key Words: Atrial flutter; Radiofrequency; Atrial septal defect; Surgery