Arrhythmias & electrophysiology
In Atrial Fibrillation, Omnipolar Voltage Maps More Accurately Delineate Scar Than Bipolar Voltage Maps
Performance · De novo: voltage in AFResult — go to the resultVoltage difference at coregistered points 0.20 ± 0.07 mVAuthors' conclusion
OV AF maps improve voltage assessment by overcoming the impact of wavefront collision and fractionation. OV AF maps correlate better with BV maps in SR and more accurately delineate gaps on WACA lines at PVRS.
Study context
- Population
- Patients with persistent atrial fibrillation (AF) undergoing ablation (de novo and repeat procedures)20 de novo, 20 repeat
- Participants
- 40 patients
- Comparison
- Omnipolar vs bipolar voltage mapping in AF
- Outcome
- Accuracy of atrial voltage assessment methods in identifying PV reconnection sites
Performance
De novo: voltage in AF
Voltage difference at coregistered points
0.20 ± 0.07 mV
P = 0.003
By group
As reported in the abstract
- Repeat procedures: Omnipolar voltage (OV) superior to bipolar voltage (BV) in identifying wide area circumferential ablation (WACA) line gaps correlating with PVRS (AUC)
- 0.89, P < 0.001
Further findings
Agreement of AF maps with BV SR maps (voltage difference at coregistered points)
P OV P = 0.24 · BV P = 0.002
Low-voltage zones (LVZs) on BV but not OV maps at wavefront collision/fractionation sites
- Proportion correlating to wavefront collision and fractionation
- 94.7%
Original publication
In Atrial Fibrillation, Omnipolar Voltage Maps More Accurately Delineate Scar Than Bipolar Voltage Maps. JACC Clin Electrophysiol. Published 18 May 2023. doi:10.
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