Abstract
PurposeThe purpose of this study was to evaluate the safety and feasibility of the new high-resolution mapping algorithm SuperMap (Acutus Medical, CA, USA) in identifying and guiding ablation in the setting of regular atrial tachycardias following index atrial fibrillation (AF) ablation.MethodsSeven consecutive patients who underwent a radiofrequency catheter ablation guided by the novel noncontact charge density (CD) SuperMap for atrial tachycardia were prospectively enrolled in our study.ResultsArrhythmogenic substrate was identified in all seven patients. Mean number of EGM per map was 5859.7 ± 4348.5 points. Three patients (43%) exhibited focal tachycardia mechanisms in the left atrium, alternating from anteroseptal right superior pulmonary vein (RSPV), posterior in proximity of left inferior pulmonary vein (LIPV), and interarial septum in proximity of fossa ovalis, respectively. Four patients exhibited macroreentrant mechanism. In 3 of these patients, SuperMap detected mitral isthmus-dependent flutters with tachycardia cycle lengths of 240, 270 and 420 ms, respectively. In one patient, the mechanism was a macroreentrant tachycardia with the critical isthmus located between the crista terminalis and atriotomy. The mean ablation time (min) was 18.2 ± 12.5 and the mean procedural duration time was 56.4 ± 12.1 min. No minor or major complications occurred.ConclusionThe novel high-resolution mapping algorithm SuperMap proved to be safe, fast, and feasible in identifying and guiding ablation in the setting of regular atrial tachycardias following index AF ablation.
Highlights
Atrial tachycardias (AT) can be observed following ablation of atrial fibrillation (AF) in 5–25% of cases [1,2,3,4]
The study cohort consisted of consecutive patients presenting with AT post AF ablation with the cryoballoon (Artic Front Advance, Medtronic, MN, USA) who underwent a radiofrequency catheter ablation guided by the novel noncontact charge density (CD) mapping technology at the Heart Rhythm Management Center, UZ Brussels, Belgium, between December 2019 and April 2020
Regular atrial tachycardias occur in a sizeable proportion of patients following AF ablation
Summary
Atrial tachycardias (AT) can be observed following ablation of atrial fibrillation (AF) in 5–25% of cases [1,2,3,4]. J Interv Card Electrophysiol (2021) 61:187–195 the novel SuperMap algorithm. The latter has been created to study regular atrial rhythms. The simultaneous and global nature of noncontact mapping may help to understand the mechanisms responsible for initiating and maintaining these arrhythmias [13]. This might lead to less time-consuming procedures. To the best of our knowledge, mapping and ablation of regular atrial tachycardias following atrial fibrillation ablation with the novel noncontact CD SuperMap algorithm have not been described yet in a series of consecutive patients
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Journal of Interventional Cardiac Electrophysiology
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.
