Arrhythmias & electrophysiology
Assessment of Intraprocedural Automated Arrhythmia Origin Localization System for Localizing Pacing Sites in 3D Space
Authors' conclusion
The AAOL approach accurately identifies early ventricular activation origins in 3D and on EAM surfaces, potentially useful for identifying intramural arrhythmia origins.
Study context
- Population
- Patients with ventricular pacing sites mapped on patient-specific electroanatomic (EAM) surfacespatients, 48 procedures, average of 19 ± 10 pacing sites each
- Participants
- 47 patients
- Exposure
- AAOL-3D vs AAOL-Surface; localization error as the distance between known and predicted site coordinates
- Outcome
- Localization error
Methodological details3 datasets
- 3 datasets
Main finding
As reported in the abstract
P < 0.05
- AAOL-3D localization accuracy
- 7.2 ± 3.1 mm
Observational data: associations, not effects.
Further findings
AAOL-3D localization error, epicardial vs endocardial pacing sites · greater localization error for epicardial
P < 0.05
Cohort-specific accuracy
- Cohort-specific analysis consistently favored AAOL-3D over AAOL-Surface in terms of accuracy
AAOL-Surface accuracy across EAM resolutions
- Optimal performance at the original and 75% resolution, with performance declining as resolution decreased
Original publication
Assessment of Intraprocedural Automated Arrhythmia Origin Localization System for Localizing Pacing Sites in 3D Space. JACC Clin Electrophysiol. Published 29 January 2025. doi:10.
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