Arrhythmias & electrophysiology
Posterior offset of inferior caval vein and its impact on cavotricuspid conduction block difficulty during cryoablation for common-type atrial flutter
Main finding · Association of CR angle with procedure timeResult — go to the resultB 0.369Authors' conclusion
A larger CR angle may be associated with increased difficulty achieving CTI conduction block during cryoablation, potentially complicating catheter positioning.
Study context
- Population
- Patients who underwent cavotricuspid isthmus (CTI) cryoablation for common-type atrial flutterconsecutive patients who underwent CTI cryoablation
- Participants
- 100 patients
- Comparison
- Larger CTI rotation (CR) angle group vs smaller CR angle group
- Outcome
- Association of CR angle with procedure time
Methodological detailsconsecutive patients, preoperative computed tomography
- Consecutive patients
- Preoperative computed tomography
Main finding
As reported in the abstract
B
0.369
P < 0.001
Further findings
| Outcome | P value |
|---|---|
| Procedure timeSignificantly longer with larger CR angle group | P = 0.005 |
| Time to reach nadir freezing temperatureLarger CR angle group vs smaller CR angle group · TA-side segment; longer with larger CR angle group | P = 0.031 |
| Time to reach nadir freezing temperatureLarger CR angle group vs smaller CR angle group · middle-side segment; longer with larger CR angle group | P = 0.038 |
Original publication
Posterior offset of inferior caval vein and its impact on cavotricuspid conduction block difficulty during cryoablation for common-type atrial flutter. Heart Rhythm. Published 20 May 2025. doi:10.
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