Arrhythmias & electrophysiologyCohort study
Lattice-tip catheter for septal ventricular tachycardia ablation guided by preprocedural imaging
- prospective single-arm study
- consecutive patients
Authors' conclusion
Septal VT ablation using a strategy combining substrate imaging and large-footprint dual-energy lattice-tip catheter leads to a high rate of noninducibility and good outcomes during short-term follow-up, especially when combining RF and pulsed field energy.
Study context
- Population
- Patients with drug-refractory ventricular tachycardia (VT) in the setting of a predominantly septal substrate identified on preoperative imaging12 procedures performed in 10 consecutive patients
- Participants
- 10 patients
Main finding
As reported in the abstract
Noninducibility
Noninducibility reached, share of procedures
83%
Observational data: associations, not effects.
Further findings
Freedom from VT after the last procedure · mean follow-up 9.9 ± 2.2 months
- Remained free from VT
- 60%
Baseline characteristics
- Patients with at least 1 previous failed ablation procedure
- 9
- Of those, with nonstandard radiofrequency (RF) ablation strategies
- 5
- Patients in a VT storm at the time of ablation
- 6
- Intramural septal substrate on CT with late iodine acquisition
- all
Freedom from VT with final optimized protocol (pulsed field and RF energy), last 5 patients
- Remained free from VT, last 5 patients
- 80%
- The ablation protocol was adapted during the study.
Original publication
Lattice-tip catheter for septal ventricular tachycardia ablation guided by preprocedural imaging. Heart Rhythm. Published 14 May 2026. doi:10.1016/j.hrthm.2026.05.008
Summarised from the published abstract; every number is checked against it