Baseline characteristics and AF recurrence after RFCA
The mean age was 62.5 ± 10.3 years, 119 (84.4%) were male, and the body
mass index (BMI) was 24.6 ± 3.3 kg/m2. The mean
CHADS2 and CHA2DS2-VASc
scores were 1.3 ± 1.1 and 2.1 ± 1.5, respectively. The mean left atrial
diameter (LAD) was 43.2 ± 6.3 mm, and the left ventricular ejection
fraction (LVEF) was 64.6 ± 10.5%. Those baseline characteristics are
listed in Table 1 .
The mean follow-up period after the procedure was 24.3 ± 12.2 months.
One hundred seven patients (75.9%) were in SR and 34 (24.1%) developed
an AF recurrence. As shown in Table 1 , the AF recurrence group
had a longer duration of AF, higher use rate of AADs after the RFCA, and
higher IDF threshold after the RFCA as compared to that in the
no-recurrence group (p < 0.05). However, there were no
significant differences in the age, sex distribution, BMI,
CHADS2 score, Creatinine, brain natriuretic peptide
(BNP), LAD, LVEF, non-PV foci, and IDF threshold before the RFCA between
the two groups.