Table 1. Baseline Patient Characteristics.

AF, atrial fibrillation; LA, left atrium; LVEF, left ventricular ejection fraction; Q, quartile; SD, standard deviation; TIA, transient ischemic attack.

*Enrolled population including 1 patient who did not receive any treatment and excluding 8 patients who were treated with a previous version of the study device.

Characteristics	Enrolled population(N = 43)*
Age, years, mean ± SD	60.3 ± 12.6
Sex, male, n (%)	27 (62.8%)
Patient history	-
AF duration, months, median (Q1, Q3)	24 (10.0, 59.0)
Atrial flutter, n (%)	6 (14.0%)
Systemic hypertension, n (%)	24 (55.8%)
Diabetes, n (%)	2 (4.7%)
Coronary disease, n (%)	7 (16.3%)
Prior thromboembolic events/TIA, n (%)	4 (9.3%)/1 (2.3%)
Hyperthyroidism, n (%)	2 (4.7%)
CHA2DS2-VASc score, mean ± SD	1.8 ± 1.31
Congestive heart failure, n (%)	1 (2.3%)
Failed anti-arrhythmic drug class, n (%)	38 (88.4%)
LVEF (%), mean ± SD (min, max)	60.6 ± 5.38 (50.0, 73.0)
LA dimension, mm, mean ± SD (min, max)	LA dimension, mm, mean ± SD (min, max)