Arrhythmias & electrophysiologyCohort study
Shortened radiofrequency delivery time to optimize efficiency and safety of pulmonary vein isolation with the radiofrequency balloon: insights from the COLLABORATE registry
- Prospective multicentre registry study
- 7 European centres
Authors' conclusion
Analyses from the COLLABORATE registry demonstrate that shortening RF energy delivery times to 15/45 s (PST/ANT) during PVI with the RFB resulted in comparable freedom from recurrent atrial tachyarrhythmia compared to conventional delivery times with comparable efficiency and safety.
Study context
- Population
- Patients undergoing pulmonary vein isolation (PVI) with a radiofrequency balloon
- Participants
- 641 patients
- Exposure
- Shortened RF delivery vs conventional RF delivery for PVI with radiofrequency balloon (RFB)
- SHRTn = 267
- CONVn = 374reference
- Outcome
- Freedom from any atrial tachyarrhythmias
- Follow-up
- 1 year
Main finding
As reported in the abstract
Observational data: associations, not effects.
Further findings
Procedure time
P < 0.001
Fluoroscopy time
P < 0.001
First-pass isolation rates and time to isolation
- Comparable between groups
Safety
| Outcome | P value |
|---|---|
| Procedural complications · 1.4% vs. 5.3%, lower with shortened RF delivery | P = 0.04 |
Original publication
Shortened radiofrequency delivery time to optimize efficiency and safety of pulmonary vein isolation with the radiofrequency balloon: insights from the COLLABORATE registry. Europace. Published 4 September 2024. doi:10.1093/europace/euae227
Summarised from the published abstract; every number is checked against it