Atrial flutter ablation (n=6) Others combined procedure (n=10) p-value
LAA ostial diameter (mm) 20 (18/21) 19 (18/21) 0.55
No. of device deployment 1 (1/1) 1 (1/2) 0.18
No. device 1 (1/1) 1 (1/1) 0.46
Device compression (%) 17 (15/19) 20 (15/21) 0.56
Procedure time (min) 75 (64/80) 133 (123/148) <0.01
Fluoroscopy time (min) 8 (4/11) 36 (22/56) <0.01
Fluoroscopy dose (mGy) 512 (336/769) 7820 (3134/15300) 0.01