Arrhythmias & electrophysiology
Cryoablation of pulmonary veins guided by pressure waveform analysis: Intra-procedural and long-term outcomes
Authors' conclusion
Pressure-guided cryoablation is a safe, effective alternative to contrast-based methods, achieving high acute isolation and long-term success rates. Future randomized studies should further assess its role in clinical practice.
Study context
- Population
- Patients undergoing cryoballoon ablation of pulmonary veins guided exclusively by pressure waveform analysis, using Arctic Front Advance Pro and PolarX systemsconsecutive patients, 869 pulmonary vein (PVs) treated
- Participants
- 220 patients
- Exposure
- Type 1 vs Type 2 occlusion
- Outcome
- Arrhythmia-free survival
- Follow-up
- 1 year
Methodological detailsconsecutive patients, 9 Spanish hospitals, multi-brand setting
- Consecutive patients
- 9 Spanish hospitals
- Multi-brand setting
Main finding
As reported in the abstract
One-year arrhythmia-free survival
92.2%
Observational data: associations, not effects.
Secondary outcomes
Isolation success by occlusion type
- Isolation success by occlusion type — Type 2 occlusion, share of cases
- 80%
- Isolation success by occlusion type: P < .001
Acute PV isolation without contrast
- PV isolation achieved, patients
- 93.7%
Procedural times
Minutes
- Median procedure time
- 102
- Median fluoroscopy time
- 23
Symptom improvement
- Patients experiencing symptom improvement
- 81.1%
- P < .001
PV-level isolation and single-shot success
- PVs treated
- 869
- PVs isolated
- 98.5%
- Single-shot success rate
- 76.5%
Safety
- Serious adverse events
- 0.4%
- Minor adverse events
- 5.4%
- Transient phrenic nerve palsy
- 3.2%
Original publication
Cryoablation of pulmonary veins guided by pressure waveform analysis: Intra-procedural and long-term outcomes. Heart Rhythm. Published 5 June 2025. doi:10.
Composed by AI from the published abstract and checked against it. How Briefs are made →