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BACKGROUND Inflammation plays a prominent role in the etiology of the early recurrence of atrial fibrillation (ERAF). We prospectively compared the proportion of ERAF and time-course patterns of biomarkers between radiofrequency (RF) and cryoballoon (CB) ablation. METHODSANDRESULTS We enrolled 82 consecutive paroxysmal AF patients undergoing pulmonary(More)
BACKGROUND Periesophageal vagal nerve injury is recognized as a rare complication in atrial fibrillation ablation procedures. We investigated the factors associated with the occurrence of symptomatic periesophageal vagal nerve injury after pulmonary vein antrum isolation. METHODS AND RESULTS Overall, 535 consecutive patients who underwent sole pulmonary(More)
BACKGROUND Early recurrence of atrial fibrillation (ERAF) is common after pulmonary vein antrum isolation (PVAI); however, the definition, study population, and lesion set are not uniform in prior studies. We examined ERAF for paroxysmal AF while complying with the definition in the latest guidelines. METHODSANDRESULTS We included 471 patients undergoing(More)
BACKGROUND Adenosine triphosphate (ATP) testing reveals dormant pulmonary vein (PV) conduction after electrical PV isolation (PVI). This study aimed to evaluate the incidence of latent PV conduction after cryothermal PVI. METHODS Fifty-four consecutive paroxysmal atrial fibrillation patients undergoing cryothermal PVI were prospectively enrolled. PVI was(More)
BACKGROUND Phrenic nerve injury (PNI) is recognized as an important complication during atrial fibrillation ablation. This study aimed to investigate the incidence and outcome of PNI during superior vena cava isolation (SVCI) and circumferential pulmonary vein isolation (CPVI) using radiofrequency (RF) energy and the factors associated with its occurrence.(More)
BACKGROUND The latest guidelines define "long-term success" as freedom from atrial arrhythmia recurrence more than 36 months after procedures without any antiarrhythmic drug therapy. OBJECTIVE The purpose of this study was to investigate the clinical outcomes and procedural findings in patients with recurrence beyond "long-term success." METHODS Among(More)
BACKGROUND The utility of compound motor action potential (CMAP) monitoring for anticipating phrenic nerve injury (PNI) during cryoballoon ablation has been reported. We sought to compare two different CMAP recording techniques and evaluated the feasibility during pulmonary vein antrum isolation (PVAI) and superior vena cava isolation (SVCI) using(More)
BACKGROUND Clinical outcomes after atrial fibrillation (AF) ablation are evaluated using standard 24-h Holter monitoring, and the large spontaneous variability of AF episodes and incidence of silent AF are major limitations. Further, symptoms generally decrease after AF ablation. METHODS AND RESULTS: Newly developed extended external auto-trigger loop(More)
AIMS The mini electrodes (ME) placed on the tip of the ablation electrode provide more precise local signal. We evaluated whether ME catheter was effective for the ablation of cavotricuspid isthmus (CTI)-dependent atrial flutter. METHODS AND RESULTS Eighty-five consecutive patients (68 men; 62 ± 10 years) underwent CTI ablation either using a catheter(More)