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Direct Pressure Monitoring Accurately Predicts Pulmonary Vein Occlusion During Cryoballoon Ablation
Published on: February 26, 2013
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Pulmonary Vein Stenosis After Second-Generation Cryoballoon Ablation.
Junji Matsuda1, Shinsuke Miyazaki1, Hiroaki Nakamura1
1Cardiovascular Center, Tsuchiura Kyodo Hospital, Tsuchiura, Ibaraki, Japan.
Journal of Cardiovascular Electrophysiology
|December 30, 2016
Summary
Pulmonary vein stenosis (PVST) after second-generation cryoballoon ablation is uncommon. This study found a low incidence of PVST, with no progression during follow-up, suggesting the technique is safe.
Area of Science:
- Cardiology
- Electrophysiology
- Medical Imaging
Background:
- Pulmonary vein stenosis (PVST) is a known complication of first-generation cryoballoon ablation.
- Second-generation cryoballoon ablation techniques aim to minimize complications.
- The incidence and characteristics of PVST after second-generation cryoballoon ablation require evaluation.
Purpose of the Study:
- To determine the incidence and severity of PVST after second-generation cryoballoon ablation.
- To characterize the patterns of PVST in relation to anatomical location and procedural parameters.
- To assess the progression of PVST over time.
Main Methods:
- 103 patients underwent pulmonary vein isolation for atrial fibrillation using second-generation cryoballoons.
- A single, 3-minute freeze technique was employed.
- Cardiac multidetector computed tomography (MDCT) was performed pre- and post-procedure (median 6 months).
Main Results:
- Out of 406 pulmonary veins (PVs), 10 (2.5%) showed stenosis in 8 patients (7.8%).
- Minimal and mild stenosis were observed in 6 and 4 PVs, respectively; no moderate or severe stenosis occurred.
- Stenosis predominantly affected the left superior PV (LSPV); no stenosis was seen in PVs with active balloon deflations.
Conclusions:
- The incidence of PVST following second-generation cryoballoon ablation is low.
- PVST risk varies among different PVs, with LSPV being more susceptible.
- Specific procedural parameters like achieving -60°C or active balloon deflations were not associated with PVST.
Keywords:
active deflationatrial fibrillationcryoballoonpulmonary vein isolationpulmonary vein stenosisMore Related Videos
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