Arrhythmias & electrophysiologyCohort study
Mapping and ablation of ventricular tachycardia using dual-energy lattice-tip focal catheter: early feasibility and safety study
- Prospective case series
- early feasibility and safety study
Authors' conclusion
VT ablation using a dual-energy lattice-tip catheter and a novel electroanatomical mapping system is feasible. It allows rapid mapping and effective substrate modification with good outcomes during short-term follow-up.
Study context
- Population
- Patients with recurrent sustained VT; ≥1 previously failed endocardial radiofrequency (RF) ablation in 66%
- Participants
- 18 patients
Main finding
As reported in the abstract
Post-ablation VT non-inducibility; ventricular-arrhythmia-free survival
Post-ablation non-inducibility of VT
89%
Ventricular-arrhythmia-free survival at 3 months
78%
Observational data: associations, not effects.
Further findings
Ablation applications per patient
- RF applications per patient (mean ± SD)
- 12 ± 7
- Pulsed field (PF) applications per patient (mean ± SD)
- 8 ± 9
Safety
Coronary spasm after PF applications (percutaneous epicardial ablation)
- Patients with coronary spasm on angiography; all resolved after intracoronary nitrates
- three-fourths
Stroke
- Patients with stroke, resolved without sequelae
- 1
Acute phrenic nerve palsy
- No acute phrenic nerve palsy noted
Original publication
Mapping and ablation of ventricular tachycardia using dual-energy lattice-tip focal catheter: early feasibility and safety study. Europace. Published 31 October 2024. doi:10.1093/europace/euae275
Summarised from the published abstract; every number is checked against it