A real-world case–control study on the efficacy and safety of pulsed field ablation for atrial fibrillation

Table 2 Comparison of intraoperative parameters

Indicators	PFA group (n = 36)	Radiofrequency ablation group (n = 36)	F value	P value
PVI immediate success rate	36(100.0)	36(100.0)	–	1.000
Operation time (min)^a	98 ± 24.45	108.64 ± 35.57	− 0.817	0.423
Retention time of catheter in left atrium^b (min)	55.13 ± 12.36	67.60 ± 26.18	− 1.429	0.168
Radiation volume (mgy)	20.45 ± 7.12	24.54 ± 5.92	− 1.465	0.158
Number of discharges^c (time)	141.51 ± 85.70	91.82 ± 15.63	19.514	< 0.001
Number of discharges in the left pulmonary veins (time)	89.41 ± 70.23	50.48 ± 12.77	18.763	< 0.001
Number of discharges in the right pulmonary veins (time)	52.10 ± 16.84	41.63 ± 5.92	19.902	< 0.001
Pulmonary venous catheter operation time^d (min)	37.35 ± 7.36	38.64 ± 8.19	− 3.900	0.701
Left pulmonary venous catheter operation time (min)	20.83 ± 5.22	20.18 ± 6.94	2.470	0.807
Right pulmonary venous catheter operation time (min)	16.52 ± 3.97	18.46 ± 3.34	− 1.242	0.229
Effective ablation time^e (ms)	49.76 ± 24.03	1,448,890.91 ± 397,502.59	− 12.089	< 0.001
Effective ablation time of the left lung (ms)	28.35 ± 20.02	769,200.00 ± 285,216.04	− 8.944	< 0.001
Effective ablation time of the right lung (ms)	21.41 ± 5.38	679,690.91 ± 1,771,785.11	− 13.122	< 0.001

The operation time refers to the length of time between the beginning of vascular puncture and the end of surgery
^bRetention time of catheter in left atrium refers to the time between catheter insertion into the left atrium and catheter removal from the left atrium following successful ablation
^cThe number of discharges means the amount of pulse or ablation energy released each time the discharge pedal is pressed
^dPulmonary venous catheter operation time refers to the time required for pulmonary venous isolation, as computed by the system, which includes the time required for catheter movement and ablation
^eThe effective ablation time is the effective energy release time of the catheter, as calculated by the system

ISSN: 2047-783X