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- Title
Substrate mapping of the left atrium in persistent atrial fibrillation: spatial correlation of localized complex conduction patterns in global charge-density maps to low-voltage areas in 3D contact bipolar voltage maps.
- Authors
Chierchia, Gian-Battista; Sieira, Juan; Vanderper, Annelies; Osorio, Thiago Guimarães; Bala, Gezim; Stroker, Erwin; Brugada, Pedro; Al Houssari, Maysam; Cecchini, Federico; Mojica, Joerelle; Overeinder, Ingrid; Bisignani, Antonio; Mitraglia, Vincenzo; Boveda, Serge; Paparella, Gaetano; de Asmundis, Carlo
- Abstract
<bold>Purpose: </bold>This study aimed to investigate the spatial relationship between low-voltage areas (LVAs) in bipolar voltage mapping (BVM) and localized complex conduction (LCC)-cores in a global, non-contact, charge-density-based imaging, and mapping system (AcM).<bold>Methods: </bold>Patients with history of index PVI for PsAF and scheduled for a repeat ablation procedure for recurrence of the same arrhythmia were enrolled between August 2018 and February 2020. All patients underwent both substrate mappings of the left atrium (LA) with the CARTO 3D map-ping system and with AcM.<bold>Results: </bold>Ten patients where included in our analysis. All presented with persistency of PVI in all veins at the moment of repeat procedure. There was no linear relationship in BVM maps between SR and CSd (correlation coefficient 0.31 ± 0.15), SR and CSp (0.36 ± 0.12) and CSd and CSp (0.43 ± 0.10). The % overlap of localized irregular activation (LIA), localized rotational activation (LRA) and Focal (F) regions with LVA was lower at 0.2 mV compared to 0.5 mV (4.97 ± 7.39%, 3.27 ± 5.25%, 1.09 ± 1.92% and 12.59 ± 11.81%, 7.8 ± 9.20%, 4.62 ± 5.27%). Sensitivity and specificity are not significantly different when comparing composite maps with different LVA cut-offs. AURC was 0.46, 0.48, and 0.39 for LIA, LRA, and Focal, respectively.<bold>Conclusion: </bold>Due to wave front direction dependency, LVAs mapped with BVM in sinus rhythm and during coronary sinus pacing only partially overlap in patients with PsAF. LCC-cores mapped during PsAF partially co-localize with LVAs.
- Subjects
LEFT heart atrium; ATRIAL fibrillation; SENSITIVITY &; specificity (Statistics); VOLTAGE; ATRIAL arrhythmias; ATRIAL flutter
- Publication
Journal of Interventional Cardiac Electrophysiology, 2021, Vol 62, Issue 3, p539
- ISSN
1383-875X
- Publication type
journal article
- DOI
10.1007/s10840-020-00926-4