Arrhythmias & electrophysiology
Catheter ablation of intramural outflow tract premature ventricular complexes: a multicentre study
Authors' conclusion
Ablation of intramural PVCs is challenging; acute arrhythmia elimination is achieved in 3/4 patients, and non-conventional approaches are often necessary for success.
Study context
- Population
- Patients with structurally normal heart or nonischemic cardiomyopathy and intramural outflow tract premature ventricular complexes (PVCs)26 with previous ablations
- Participants
- 92 patients
- Outcome
- Acute and long-term outcomes of ablation
Main finding
As reported in the abstract
- Acute PVC suppression
- 75%
- PVC burden before ablation (mean)
- 21.5±10.9%
- PVC burden after procedure (mean)
- 5.8±8.4%
- Repeat ablation during follow-up
- 16 patients
- Mean follow-up
- 15±14 months
Observational data: associations, not effects.
Further findings
Mapping and ablation techniques
- Direct intramural septal mapping
- 29 patients (32%)
- Earliest activation within septal vein (of directly mapped)
- 13
- Sequential unipolar ablation
- 73%
- Low-ionic irrigation
- 26%
- Bipolar ablation
- 15%
- Ethanol ablation
- 1%
- LBBB pattern
- 68%
Original publication
Catheter ablation of intramural outflow tract premature ventricular complexes: a multicentre study. Europace. Published 25 April 2023. doi:10.
Composed by AI from the published abstract and checked against it. How Briefs are made →