Abstract
The left ventricular summit (LVS) is a challenging location for catheter-based percutaneous ablation due to its anatomical location. There have been case reports of cryoablations performed in this region, but the technique may be underutilized when radiofrequency ablation fails. A 45-year-old male was found to have 25 000 premature ventricular contractions (PVCs) a day despite previous ablation and a reduced ejection fraction of 40% despite medical therapy. Coronary sinus epicardial mapping revealed the coronary sinus distal region generated activations earlier than the QRS onset by 28 ms. Two separate, 4-minute cryoablations were delivered that suppressed the PVCs within 5 seconds. Alternate energy modalities such as cryo may offer a safer and more viable approach for ablation of LVS in select patients.
Original language | English (US) |
---|---|
Pages (from-to) | 894-897 |
Number of pages | 4 |
Journal | PACE - Pacing and Clinical Electrophysiology |
Volume | 43 |
Issue number | 8 |
DOIs | |
State | Published - Aug 1 2020 |
Externally published | Yes |
Keywords
- ablation
- electrophysiology–clinical
- mapping
- new technology
ASJC Scopus subject areas
- Cardiology and Cardiovascular Medicine