Recurrence after "long-term success" in catheter ablation of XXXX .

@entity1 @entity591 @entity943 @entity955
BACKGROUND: The latest guidelines define "long-term success" as freedom from @entity943 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 @entity1 with recurrence beyond "long-term success." METHODS: Among @entity1 who underwent pulmonary vein (PV) antrum isolation for drug-refractory symptomatic @entity955 ( @entity955 ), 37 in whom recurrent @entity943 were observed during annual follow-up after "long-term success" and who underwent repeat procedures for recurrent @entity943 were included in the study. RESULTS: The time from the latest procedure to recurrence was a median of 61 ([25th, 75th percentiles]: [51-77.5]) months. Recurrent @entity943 type was paroxysmal in 22 @entity1 (59.5%) and persistent in 15 (40.5%). Recurrent @entity943 were @entity591 ( @entity591 ) in 13 @entity1 (35.1%), including 8 with @entity591 unrelated to PVs. Repeat procedures were performed a median of 2.0 [1.0-4.0] months after identifying recurrent episodes. Recovered PV conduction was found in 29 @entity1 (78.4%) and non-PV foci in 4 (10.8%). Freedom from recurrence 1 year after repeat procedures was 63.3%. Seven @entity1 (18.9%) underwent further repeat procedures a median of 7.0 [2.0-28.0] months after repeat procedures and had no PV reconnections. In total, @entity955 / @entity591 unrelated to PVs was present in 24 @entity1 (64.9%). In contrast, @entity943 related to PVs were observed in 2 @entity1 (5.4%) during a total of 46 repeat procedures after "long-term success." CONCLUSION: Although PV reconnections were commonly found even after "long-term success," @entity955 / @entity591 unrelated to PVs was assumed to be present in the majority of this population.
