EAM ‐ CT Merge Guiding a Safe Transeptal Puncture in Atrial Tachycardia Ablation in a Intracardiac Fontan Patient
Year: 2026
Type: article
Study design: Case Report
Abstract: A patient with tricuspid valve atresia and pulmonary artery valve stenosis underwent a total cavo-pulmonary circulation with an unfenestrated intracardiac conduit. He experienced poorly tolerated atrial tachycardia and was referred for radiofrequency catheter ablation (RFCA). No interatrial shunt was evident. Before the procedure, a computed tomography (CT) scan with 3D rendering was performed. At the time of the procedure, the 3D rendering was merged with an electroanatomical map (EAM) performed by CARTO3 in sinus rhythm (SR). The merge guided the identification of the exact target point for a safe transeptal puncture, without using intracardiac and/or transesophageal echocardiography. The EAM during the tachycardia showed a reentrant circuit with a critical isthmus in the lateral portion of the Fontan conduit, and RFCA was performed restoring SR.
Source: Clinical Case Reports
DOI: 10.1002/ccr3.70690
Authors: Marco Scaglione, Francesco Geuna, Enrico Guido Spinoni, Andrea Lamanna, Alberto Battaglia, Marco Gagliardi, Natascia Cerrato, Domenico Caponi
Institution: Azienda Sanitaria Locale di Asti
Language: English
Subfield: Cardiology and Cardiovascular Medicine
Field: Medicine
Domain: Health Sciences
Open Access status: gold
Estimated APC paid: $1,820
OpenAlex ID: W7127046441