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Table 2 Electrophysiological characteristics at redo procedure

From: Comparison of pulmonary vein reconnection patterns after multielectrode phased radiofrequency- and cryoballoon ablation of atrial fibrillation

 

Group 1 (PVAC N = 85)

Group 2 (CB N = 66)

p value

Angiographically delineated PVs / CTs

308/17

244/11

Targeted PVs / CTs at initial procedure

302/17

242/11

1.0000

Isolated PVs / CTs at initial procedure

298/17

240/10

1.0000

Pts. with PV reconnections

79 (93%)

61 (92%)

1.0000

Reconnected PVs and CTs at redo procedure

237/315 (75%)

130/250 (52%)

< 0.0001

Reconnected left-sided PVs/CTs

125/152 (82%)

75/119 (63%)

0.0005

Reconnected CTs

16/17 (94%)

6/10 (60%)

0.0473

Reconnected LSPV

57/67 (85%)

36/54 (67%)

0.0170

Reconnected LIPV

52/68 (76%)

33/55 (60%)

0.0533

Reconnected right-sided PVs

112/163 (69%)

55/131 (42%)

< 0.0001

Reconnected RSPV

63/79 (80%)

29/65 (45%)

< 0.0001

Reconnected RIPV

49/84 (58%)

26/66 (39%)

0.0321

Reconnected superior PVs

120/146 (82%)

65/119 (55%)

< 0.0001

Reconnected inferior PVs

101/152 (66%)

59/121 (49%)

0.0044

PV reconnections per patient #:

2.79 ± 1.2

1.97 ± 0.8

< 0.0001

Pts. with 4 reconnected PVs

28 (33%)

0 (0%)

< 0.0001

Pts. with 3 reconnected PVs

28 (33%)

17 (26%)

0.2899

Pts. with 2 reconnected PVs

18 (21%)

35 (53%)

0.0001

Pts. with 1 reconnected PV

5 (6%)

9 (14%)

0.2723

Pts. without reconnected PVs

6 (7%)

5 (8%)

1.0000

  1. PTs Patients, CB 2nd Generation cryoballoon, PVs Pulmonary veins, CTs Common trunks, LSPV Left superior pulmonary vein, LIPV Left inferior pulmonary vein, RSPV Right superior pulmonary vein and RIPV Right inferior pulmonary vein. #: in patients with a reconnected common trunk, CT was considered and counted as one PV