1. Impact of cryoballoon applications on lesion gaps detected by magnetic resonance after pulmonary vein isolation
- Author
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Eva Benito, Marta Sitges, Francisco Alarcón, Rodolfo San Antonio, Jose Apolo, Omar Trotta, Susanna Prat-Gonzalez, Lluís Mont, Rosario J. Perea, José María Tolosana, and Eduard Guasch
- Subjects
Adult ,Male ,medicine.medical_specialty ,Time Factors ,medicine.medical_treatment ,Operative Time ,Action Potentials ,Contrast Media ,030204 cardiovascular system & hematology ,Cryosurgery ,Pulmonary vein ,Electrical isolation ,Lesion ,03 medical and health sciences ,0302 clinical medicine ,Heart Rate ,Predictive Value of Tests ,Physiology (medical) ,Atrial Fibrillation ,medicine ,Humans ,030212 general & internal medicine ,Vein ,Retrospective Studies ,medicine.diagnostic_test ,business.industry ,Atrial fibrillation ,Cryoablation ,Magnetic resonance imaging ,Middle Aged ,medicine.disease ,Ablation ,Magnetic Resonance Imaging ,Treatment Outcome ,medicine.anatomical_structure ,Pulmonary Veins ,cardiovascular system ,Female ,Radiology ,medicine.symptom ,Cardiology and Cardiovascular Medicine ,business - Abstract
INTRODUCTION Ablation with second-generation cryoballoon technology evolves as an effective and safe alternative to radiofrequency for atrial fibrillation ablation procedures. Nevertheless, the optimal freezing strategy remains unknown. Our objective was to identify the procedural cryoablation parameters predicting successful peri-pulmonary vein (PV) lesions by directly analyzing Postablation gaps in late-gadolinium-enhanced cardiac magnetic resonance (LGE-CMR). METHODS AND RESULTS Forty-nine consecutive patients (196 PVs) undergoing ablation with second-generation cryoballoon at our center were included. The number and duration of cryoballoon application to achieve PV isolation were left to operator discretion. Gap number and length were quantified in all patients with a LGE-CMR performed 3 months postablation. Application time (420 ± 217 seconds), number of applications (2.1 ± 1.2), application time after electrical isolation (311 ± 194 seconds) and minimum temperature (-45.8 ± 6.5°C) were similar in the 4 PVs. Gaps were observed in 148 PVs (76%), averaging 1.3 ± 1 gaps per vein. Gaps were longer and more frequent in the right PVs (91% vs 59% in left PVs, P
- Published
- 2020