Table 1. Baseline characteristics.

All values represent mean±standard deviation or number and (percentage). AF: atrial fibrillation; AAD: anti arrhythmic drugs; CAD: coronary artery disease; ICM: insertable cardiac monitor; LA: left atrium. LVEF: left ventricular ejection fraction; PVI: pulmonartìy vein isolation; TIA: transient ischemic attack.

	Study population (n = 73)
Mean age (yr)	60.9 ± 10.0
Females, n (%)	15 (20.5)
AF duration (years from diagnosis)	2.1 ± 1.3
Longstanding persistent AF, n (%)	8 (10.9)
Previous ablation in LA (PVI), n (%)	48 (65.7)
Number of tested AAD	1.4± 0.6
Hypertension, n (%)	41 (69.8)
Diabetes, n (%)	10 (13.6)
CAD, n (%)	7 (9.6)
Previous stroke or TIA, n (%)	4 (5.5)
LVEF (%)	52.9 ± 8.5
LA diameter (mm)	45.6 ± 5.5
ICM, n (%)	32 (43.8)