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Table 3 Pre- and post-ablation CMR characteristics of patients with no AF recurrence versus those with AF recurrence

From: Association of left atrial strain by cardiovascular magnetic resonance with recurrence of atrial fibrillation following catheter ablation

 

Total N = 80

No AF recurrence n = 59

AF recurrence n = 21

p-value

Pre-ablation

 CMR before ablation procedure (median days, Q1-Q3)

32 (15–67)

26 (12–64)

38 (99–306)

0.45

 LAV maximum (mL)

112 ± 36

110 ± 34

117 ± 43

0.45

 LAV maximum index (mL/m2)

52 ± 18

46 ± 16

47 ± 16

0.51

 LAV minimum (mL)

63 ± 32

60 ± 30

70 ± 38

0.21

 LAV minimum index (mL/m2)

29 ± 16

28 ± 16

33 ± 16

0.24

 LAV pre-A (mL)

86 ± 35

82 ± 33

93 ± 41

0.21

 LAV pre-A index (mL/m2)

40 ± 17

38 ± 18

43 ± 17

0.24

 LA passive ejection fraction (%)

25 ± 12

23 ± 9

24 ± 8

0.71

 LA active ejection fraction (%)

29 ± 15

30 ± 16

26 ± 14

0.30

 LA total ejection fraction (%)

46 ± 15

45 ± 11

43 ± 13

0.47

 LA expansion index

95 ± 51

168 ± 524

87 ± 58

0.46

 LV ejection fraction (%)

60 ± 9

60 ± 10

61 ± 4

0.93

 LVEDVi (mL/m2)

86 ± 16

82 ± 17

88 ± 15

0.11

 LVESVi (mL/m2)

36 ± 11

32 ± 7

37 ± 11

0.05

 LV mass (mg)

97.0 ± 33.4

95.1 ± 32.3

102.4 ± 36.7

0.38

 RVEF (%)

53 ± 6

52 ± 6

55 ± 7

0.12

 RVEDVi (mL/m2)

94 ± 22

95 ± 22

91 ± 24

0.55

 RVESVi (mL/m2)

45 ± 14

44 ± 10

45 ± 22

0.89

 RA volume (mL)

143 ± 40

139 ± 38

155 ± 48

0.12

 RAVI (mL/m2)

68 ± 19

67 ± 19

70 ± 20

0.55

ℇR

24.0 ± 10.4

25.2 ± 10.7

20.8 ± 8.9

0.06

ℇCT

8.4 ± 4.1

9.1 ± 3.7

7.1 ± 4.6

0.05

ℇCD

15.6 ± 7.1

16.2 ± 7.7

13.7 ± 4.9

0.17

Post-ablation

 CMR after ablation procedure (median days, Q1–Q3)

131 (114–201)

140 (99–306)

124 (96–151.5)

0.31

 LA maximum volume (mL)

96 ± 30

100 ± 27

104 ± 36

0.57

 LAV maximum index (mL/m2)

45 ± 14

47 ± 14

47 ± 16

0.85

 LAV minimum (mL)

53 ± 23

55 ± 22

68 ± 26

0.05

 LAV minimum index (mL/m2)

25 ± 12

26 ± 8

31 ± 11

0.06

 LAV pre-A (mL)

73 ± 27

77 ± 25

79 ± 32

0.74

 LAV pre-A index (mL/m2)

34 ± 13

37 ± 12

36 ± 14

0.79

 LA passive EF (%)

24 ± 9

24 ± 9

24 ± 8

0.96

 LA active EF (%)

27 ± 16

29 ± 11

24 ± 8

0.05

 LA total EF (%)

43 ± 15

46 ± 12

39 ± 14

0.02

 LA expansion index

88 ± 49

95 ± 37

74 ± 38

0.03

 LVEF (%)

57 ± 6

58 ± 6

60 ± 3

0.85

 LVEDVI (mL/m2)

90 ± 25

85 ± 19

88 ± 38

0.79

 LVESVI (mL/m2)

39 ± 11

36 ± 12

34 ± 8

0.77

 LV mass (mg)

88.2 ± 27.0

94.2 ± 26.6

96.1 ± 28.8

0.69

 RVEF (%)

51 ± 6

52 ± 6

53 ± 5

0.42

 RVEDVI (mL/m2)

93 ± 22

89 ± 21

87 ± 24

0.86

 RVESVI (mL/m2)

46 ± 13

43 ± 13

39 ± 11

0.81

 RA volume (mL)

132 ± 39

121 ± 38

137 ± 42

0.11

 RAVI (mL/m2)

65 ± 19

52 ± 18

62 ± 20

0.04

ℇR

21.4 ± 8.1

21.4 ± 7.8

21.0 ± 9.1

0.77

ℇCT

7.0 ± 5.3

7.3 ± 1.7

6.2 ± 2.9

0.04

ℇCD

14.4 ± 6.3

14.1 ± 6.2

14.8 ± 7.2

0.3

ΔℇR

2.7 ± 9.3

3.8 ± 9.1

-0.2 ± 9.7

0.09

ΔℇCT

1.4 ± 4.5

1.7 ± 4.2

0.9 ± 5.3

0.49

ΔℇCD

1.3 ± 6.6

2.1 ± 6.7

-1.1 ± 6.2

0.06

  1. Significant p-values are shown in bold
  2. EDV, end diastolic volume; EF, ejection fraction; ESV, end systolic volume; LA, left atrium; LAV, left atrial volume; LLPV, left lower pulmonary vein; LUPV, left upper pulmonary vein; LV, left ventricle; RA, right atrium; RLPV, right lower pulmonary vein; RUPV, right upper pulmonary vein; RV, right ventricle; ℇCD, conduit strain; ℇCT, contractile strain; ℇR, reservoir strain, ΔℇR, ΔℇCT, ΔℇCD, difference between pre- and post-ablation values of ℇR, ℇCT and ℇCD, respectively
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Journal of Cardiovascular Magnetic Resonance

ISSN: 1532-429X

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