â–³eGFR = eGFR readmission - eGFRbaseline
The blank period was defined as the first 3 months after the RFCA
procedure. The recurrence of paroxysmal atrial arrhythmia after RFCA was
defined as atrial arrhythmia, including atrial fibrillation, atrial
flutter and atrial tachycardia, lasting longer than 30 s but less than 1
week. The recurrence of persistent atrial arrhythmia after RFCA was
defined as any atrial arrhythmia lasting longer than 1 week.
We classified the pattern of arrhythmia change before and after the
index ablation into 4 groups: paroxysmal AF to paroxysmal arrhythmia
recurrence (Pa to Pa), paroxysmal AF to persistent arrhythmia recurrence
(Pa to Pe), persistent AF to paroxysmal arrhythmia recurrence (Pe to
Pa), and persistent AF to persistent arrhythmia recurrence (Pe to Pe).