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June 27, 2026EP EuropaceOpen Access

Lattice-tip dual-energy catheter terminates atypical atrial flutter at initial ablation sites in ~79% of patients.

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Why the study?

Does mapping and ablation using a lattice-tip dual-energy catheter terminate tachycardia in patients with atypical atrial flutter?

Population

65 patients with atypical atrial flutter where activation mapping covered >80% of tachycardia cycle length…

Design

Cohort

Follow-up

median 69 (48.8–116) days

Key result

Mapping and ablation of atypical atrial flutter using a novel lattice-tip dual-energy catheter achieved tachycardia termination at or near the initial ablation site in 79.4% of patients.

Authors

ECE ChiarazzoMMM MarinoVFV M La Fazia

Discussion

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Overview

Supports targeted initial ablation for acute termination; leaves open long-term efficacy versus standard approaches in larger trials.

Key Points

  • To assess the feasibility of using a novel high-density mapping system for ablating atypical atrial flutter.
  • Analyzed data from 673 patients with atypical atrial flutter, collected prospectively.
  • Used a 9-mm lattice-tip, multipolar, dual-energy catheter for mapping and ablation.
  • Primary outcome was tachycardia termination at the initial or surrounding ablation site.
  • Achieved procedural success in all cases (100%), with tachycardia termination in 79.4% of patients.
  • Median follow-up of 69 days showed atrial flutter recurrence in 15% of patients.
  • Estimated event-free survival rates at 1, 3, and 6 months were 88.3%, 85.1%, and 79.7%, respectively.

Study Design

Type

Cohort (n=65)

Structured PICO

Does mapping and ablation using a lattice-tip dual-energy catheter terminate tachycardia in patients with atypical atrial flutter?

P
Population
65 patients with atypical atrial flutter (mean age 71.3 years, 36.9% female) who underwent mapping and ablation with a novel lattice-tip catheter, followed for a median of 69 days.
E
Exposure
Mapping and ablation targeting the critical isthmus using an expandable 9-mm lattice-tip, multipolar, dual-energy catheter (toggling between radiofrequency and pulsed field energy).
O
Outcome
Termination of the tachycardia at the initial ablation site or within the surrounding area.surrogate

Mapping and ablation of atypical atrial flutter using a novel lattice-tip dual-energy catheter is feasible, achieving 100% procedural success and high rates of tachycardia termination.

Cite This Study

Chiarazzo et al. (2026) conducted a cohort in Atypical atrial flutter (AAFL) (n=65). Mapping and ablation using an expandable 9-mm lattice-tip, multipolar, dual-energy catheter was evaluated on Termination of the tachycardia at the initial ablation site or within the surrounding area. Mapping and ablation of atypical atrial flutter using a novel lattice-tip dual-energy catheter achieved tachycardia termination at or near the initial ablation site in 79.4% of patients.

synapsesocial.com/papers/6a3f97bb125782b61d865955https://doi.org/10.1093/europace/euag105.577
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Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1Feasibility of mapping and ablation of scar-related atrial flutter using a novel high-density 3-dimensional electroanatomic mapping system2026
  2. 2Comparative effectiveness of high-density mapping-guided versus empirical linear ablation in left atrial flutter: interim analysis of the FLUTMALINE clinical trial2026
  3. 3The real-world performance of the lattice tip catheter with a dual-energy option in redo AF ablation procedures2026
  4. 4Electrophysiological Features of Atrial Tachyarrhythmias and Rhythm Outcome in Patients Receiving Repeat Catheter Ablation after Surgical Atrial Fibrillation Ablation plus Left Atrial Appendage Excision2025
  5. 5Treatment of mapped left atrial macroreentrant flutter with electroporation: results and comparison with radiofrequency2026