Key result
The presence of localized left atrial low-voltage areas indicated whole left atrial electrophysiological degeneration, characterized by significantly lower regional voltages and slower conduction velocities compared to patients without low-voltage areas.
Why the study?
The efficacy of ablation targeting low-voltage areas is controversial, and whether AF substrate localizes strictly within these areas is unclear.
Do mapping parameters representing whole left atrial electrophysiological degeneration predict atrial fibrillation recurrence in patients undergoing initial AF ablation?
Population
405 consecutive patients undergoing an initial AF ablation procedure
Comparison
Patients with vs without low-voltage areas
Design
Observational study
Loading...
Localized LVAs mark global LA degeneration; leaves open whether focal targeting improves outcomes beyond PVI.
Observational (n=405)
No
Do mapping parameters representing whole left atrial electrophysiological degeneration predict atrial fibrillation recurrence in patients undergoing initial AF ablation?
Absolute Event Rate: 0.89% vs 0.93%
p-value: p=<0.001
Whole left atrial electrophysiological degeneration, assessed by conduction velocity and regional voltage reduction, is a better predictor of AF recurrence after ablation than the mere presence of localized low-voltage areas.
A 2021 study conducted an observational in Atrial fibrillation (n=405). Presence of localized left atrial low-voltage areas vs. Absence of localized left atrial low-voltage areas was evaluated on Left atrial conduction velocity (m/s) (p=<0.001). The presence of localized left atrial low-voltage areas indicated whole left atrial electrophysiological degeneration, characterized by significantly lower regional voltages and slower conduction velocities compared to patients without low-voltage areas.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: