Table 2 Changes in left atrial (LA) structure after radiofrequency catheter ablation.

From: Effect of radiofrequency catheter ablation on left atrial structure and function in patients with different types of atrial fibrillation

Variables

Groups

Po

1 W

2 W

3 W

4 W

2 M

3 M

6 M

9 M-1Y

P for group

LA anteroposterior diameter

Paroxysmal AF

35.68 ± 4.89

36.37 ± 4.73

36.03 ± 4.56

36.24 ± 5

35.98 ± 4.7

35.12 ± 4.22

35.23 ± 4.49

34.32 ± 5.59

34.3 ± 6.14

 < 0.001

p for time

 

0.19

0.51

0.30

0.57

0.30

0.40

0.01

0.01

Persistent AF

40.37 ± 4.15

40.06 ± 4.69

38.62 ± 4.71

39.54 ± 4.7

38.53 ± 5.03

39.28 ± 8.87

37.56 ± 4.94

38.14 ± 5.28

37.87 ± 5.77

p for time

 

0.65

0.01

0.23

0.01

0.11

 < 0.001

 < 0.001

 < 0.001

LSPAF

41.35 ± 4.04

40.46 ± 4.27

39.52 ± 4.19

39.62 ± 3.79

39.15 ± 4.51

38.98 ± 4.06

38.32 ± 3.57

38.42 ± 3.68

38.87 ± 4.63

p for time

 

0.07

 < 0.001

 < 0.001

 < 0.001

 < 0.001

 < 0.001

 < 0.001

 < 0.001

LA vertical diameter

Paroxysmal AF

47.97 ± 9.7

49.03 ± 8.44

48.15 ± 7.94

48.13 ± 8.73

48.55 ± 9.04

48.14 ± 7.96

48.6 ± 9.23

46.67 ± 8.34

47.37 ± 8.32

 < 0.001

p for time

 

0.21

0.83

0.85

0.49

0.84

0.46

0.13

0.48

Persistent AF

61.78 ± 5.93

59.88 ± 5.38

59.71 ± 6.89

57.24 ± 6.68

59.02 ± 7.12

58.87 ± 7.26

57.17 ± 6.92

58.96 ± 8.72

57.12 ± 9.3

p for time

 

0.06

0.04

 < 0.001

0.06

0.04

 < 0.001

0.05

 < 0.001

LSPAF

60.33 ± 7.34

61.15 ± 7.33

60.24 ± 6.63

60.27 ± 6.16

59.65 ± 6.35

58.87 ± 6.17

59.1 ± 6.1

57.39 ± 6.18

57.32 ± 6.93

p for time

 

0.37

0.92

0.94

0.45

0.11

0.17

0.01

0.01

LAVmax

Paroxysmal AF

56.88 ± 16.54

58.08 ± 16.87

59.91 ± 17.35

58.09 ± 18.82

57.06 ± 19

56.07 ± 16.07

55.23 ± 16.32

56.03 ± 15.92

54.7 ± 13.72

 < 0.001

p for time

 

0.15

0.05

0.43

0.33

0.80

0.40

0.23

0.85

Persistent AF

80.86 ± 21.05

76.32 ± 21.04

72.6 ± 18.36

73.74 ± 20.99

69.81 ± 22.64

67.18 ± 18.31

69.73 ± 20.17

71.77 ± 21.42

71.18 ± 21.61

p for time

 

0.59

 < 0.001

 < 0.001

 < 0.001

 < 0.001

 < 0.001

 < 0.001

 < 0.001

LSPAF

80.86 ± 17.43

78.55 ± 19.48

71.76 ± 16.12

71.49 ± 16.07

71.99 ± 20.16

71.36 ± 18.97

72.03 ± 19.11

68.59 ± 20.31

68.33 ± 18.25

p for time

 

0.25

0.05

0.002

0.001

 < 0.001

 < 0.001

 < 0.001

 < 0.001

LAVmin

Paroxysmal AF

27.92 ± 11.6

28.75 ± 11.35

29.45 ± 11.38

28.5 ± 10.44

28.93 ± 9.29

27.87 ± 11.2

25.31 ± 10.37

25.71 ± 11.06

25.4 ± 9.6

 < 0.001

p for time

 

0.16

0.33

0.88

0.68

0.81

0.08

0.61

0.20

Persistent AF

60.71 ± 19.79

46.92 ± 15.05

44.68 ± 15.75

42.1 ± 13.49

39.1 ± 14.03

36.71 ± 12.58

35.18 ± 13.52

36.98 ± 14.97

36.48 ± 13.58

p for time

 

 < 0.001

 < 0.001

 < 0.001

 < 0.001

 < 0.001

 < 0.001

 < 0.001

 < 0.001

LSPAF

59.38 ± 13.37

48.29 ± 12.03

41.68 ± 11.21

38.42 ± 11.46

40.46 ± 13.99

37.87 ± 12.88

38.66 ± 12.87

39.49 ± 14.87

38.07 ± 12.96

p for time

 

 < 0.001

 < 0.001

 < 0.001

 < 0.001

 < 0.001

 < 0.001

 < 0.001

 < 0.001

  1. P values are given for the comparisons of variables at individual follow-up timepoints with their baseline values.
  2. LAVmax maximum left atrial volume, LAVmin minimum left atrial volume.
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