Arrhythmias & electrophysiology
Electrode Thermal Profile During Ventricular Radiofrequency (RF) Ablation: A Novel Indication of Electrode Tissue Interface to Inform Energy Delivery
Authors' conclusion
Electrode thermal profiles provide information complementary to force vector and impedance, reflecting electrode-tissue interactions that are also related to discrepancies in impedance fall and temperature during RF ablation.
Study context
- Population
- Patients undergoing ventricular RF ablation with a catheter with 6 distal electrode temperature sensors2,085 RF applications
- Participants
- 100 patients
- Outcome
- Relationships between thermal profiles, catheter orientation, impedance fall, steam pops and discordant temperature-impedance changes
Main finding
As reported in the abstract
- Thermal profile aligned with force vector at stable sites
- 60.9%
- Peripheral profiles oblique/parallel
- 72.1%
- Central profiles perpendicular
- 80.4%
- Impedance fall discordant with temperature, sites
- 890 (42.7%)
- Catheter orientation and thermal profiles differed for low temperature-high impedance fall vs high temperature-low impedance fall discordant sites
- P < 0.001
- Steam pops with embedded thermal profile (all sensors ≥45 °C) vs other profiles
- 8.6% vs 1.3%; P < 0.001
Original publication
Electrode Thermal Profile During Ventricular RF Ablation: A Novel Indication of Electrode Tissue Interface to Inform Energy Delivery. JACC Clin Electrophysiol. Published 24 October 2025. doi:10.
Composed by AI from the published abstract and checked against it. How Briefs are made →