Arrhythmias & electrophysiology
Multielectrode catheter-induced ectopy mapping: A novel technique for ablation of infrequent premature ventricular contractions
Authors' conclusion
A detailed MECIE map taking advantage of multielectrode catheter arrhythmogenicity may be generated to spot the origin of PVCs, a strategy resulting in a good procedural success rate.
Study context
- Population
- Patients referred for premature ventricular complexes (PVC) ablation with infrequent PVCs (<1 PVC per minute) at procedure onset
- Participants
- 29 patients
- Outcome
- Long-term success (>80% reduction in PVC burden)
- Follow-up
- During
Methodological detailsmulticentre, 3 tertiary centres
- Multicentre
- 3 tertiary centres
Main finding
As reported in the abstract
>80% reduction in PVC burden (long-term success) · 13.2 ± 5.1 months of follow-up
Patients with 80% reduction in PVC burden
27
93.1 %
Observational data: associations, not effects.
Further findings
PVCs in initial 30 minutes of procedure
- PVCs in initial 30 min (IQR 7-30)
- 25
Symptomatic recurrences · 13.2 ± 5.1 months of follow-up
- Patients with symptomatic recurrences
- 2
Points with ≥99% concordance acquired during MECIE mapping
- Points with ≥99% concordance (IQR 1-332)
- 67
Best local activation time (LAT) before QRS onset
- Best LAT before QRS onset (ms)
- 34.0 ± 9.5
Pace mapping concordance with clinical PVC
- Pace mapping vs clinical PVC (%)
- 97.4 ± 3.1
Original publication
Multielectrode catheter-induced ectopy mapping: A novel technique for ablation of infrequent premature ventricular contractions. Heart Rhythm. Published 23 October 2024. doi:10.
Summarised from the published abstract; every number is checked against it