Effectiveness and Safety of High-Power Radiofrequency Ablation Guided by Ablation Index for the Treatment of Atrial Fibrillation

Table 4

Procedural characteristics.

Variable	Study group; High power (40 W)	Control group; Standard power (30 W);	value
Procedure time, min			<0.001
Right encirclement procedure time, min			<0.001
Left encirclement procedure time, min			<0.001
Right encirclement points,			0.1
Left encirclement points,			0.407
Total ablation time, min			<0.001
Contact-force, g			0.523
Ablation time per point, s			<0.001
Energy delivery per point, J			<0.001
Impedance drop per point, Ω			<0.001
First-pass PVI	87 (87)	72 (72)	<0.01
Reconnection after 20 min	22 (11)	46 (23)	<0.01
Groin hematoma	1	1	1
Tamponade	0	0	1
Periprocedural stroke	0	0	1
Esophageal fistula	0	0	1
Sinus rhythm at 12 months	46 (92)	42 (84)	0.22

Data are presented as or (%).