Abstract
Methods: a 35 yo patient with previous intracardiac total cavopulmonary connection was referred for recurring AT despite antiarrhythmic drugs, after ablation of two right atrial incisional reentry three years ago. Because of surgical closure of the tricuspid valve and lack of fenestration of the conduit, access to the right atrium was only possible by retrograde catheterism through the left ventricle, left atrium then through an atrial septal defect. Results: High density mapping of both right and left atrium was performed during AT using the Orion catheter ™. A common counterclockwise atrial flutter (AF) was diagnosed. Access to the cavo-tricuspid isthmus (CTI) was possible after turning the RF catheter around the intracardiac conduit connecting the inferior vena cava to the pulmonary artery. RF ablation at the CTI (after RF applications in the subhepatic veins and inside the conduit) finally terminated the tachycardia. Conclusion: The Rythmia system™ allows high density mapping and precise activation mapping in post-Fontan univentricular hearts patients. Both atrium may be mapped with the Orion ™ catheter even after complicated retrograde access. Common AF may happen in these patients whose ablation may be difficult due to anatomical constraints.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.