Key result
Ultra-high-resolution mapping defines atrial tachycardia mechanisms but ~46% recur despite acute ablation success.
Why the study?
An incomplete understanding of the mechanism of AT is a major determinant of ablation failure.
Population
132 consecutive patients with ≥1 AT excluding cavotricuspid isthmus-dependent flutter
Comparison
Ultra-high-resolution mapping with a 64-pole catheter and radiofrequency ablation
Design
Cohort study
Follow-up
Mean 13 ± 9 months
Authors
Loading...
High recurrence despite acute success warrants caution in post-intervention AT; leaves open durability of mapping-guided ablation for prospective trials.
Cohort (n=132)
Ultra-high-resolution mapping effectively delineates complex atrial tachycardia circuits in patients with prior atrial interventions, though long-term recurrence rates remain high despite acute ablation success.
Derval et al. (2020) conducted a cohort in Atrial tachycardia in patients with previous atrial interventions (n=132). Ultra-high-resolution mapping and radiofrequency ablation was evaluated on Recurrence of atrial tachycardia. Ultra-high-resolution mapping defined the mechanism in 96% of atrial tachycardias, but despite high acute ablation success, 46% of patients experienced recurrence at a mean of 13 months.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: