Arrhythmias & electrophysiology
High-Frequency Electrograms Abolition as a Valuable Target for Remap During Ventricular Tachycardia Ablation. The High-frequency (HF) REMAP Study
Authors' conclusion
PF analysis during re-mapping provides an operator-independent, reproducible tool to validate lesion efficacy. A low post-ablation residual HF burden is associated to a significantly increased VAs-free survival rate.
Study context
- Population
- Patients who underwent ventricular tachycardia (VT) ablation between January 2023 and December 2024 using the EnSite X mapping system with Advisor HD Grid catheter, with complete pre- and post-ablation high-density sinus rhythm mapsout of 247 consecutive patients who underwent VT ablation
- Participants
- 43 patients
- Exposure
- Patients stratified according to residual HF burden
- Outcome
- VT recurrence or arrhythmic storm
- Follow-up
- Median 372 days
Methodological detailsoffline peak frequency (PF) analysis
- Offline PF analysis
Main finding
VT recurrence or arrhythmic storm
Hazard ratio
13.36
95% CI 3.52–50.7
P < 0.001
By group
≥70% residual HF vs <70% residual HF
HR 13.36 (95% CI 3.52–50.7); P < 0.001
As reported in the abstract
- Patients reaching the primary endpoint
- 11
Observational data: associations, not effects.
Original publication
High-Frequency Electrograms Abolition as a Valuable Target for Remap During Ventricular Tachycardia Ablation. The HF REMAP Study. Heart Rhythm. Published 19 October 2026. doi:10.
Summarised from the published abstract; every number is checked against it