Table 2 Thickness of microwave ablation positions (P1 and P2) accessed via echocardiography

P1

8.03 ± 1.15

9.61 ± 1.54

P = 0.01^a

5.53 ± 1.00

P < 0.01^a

3.34 ± 0.83

P < 0.01^a

3.36 ± 0.85 (41.8%)

P < 0.01^a

P2

9.43 ± 0.87

10.94 ± 2.27

P = 0.07^a

5.74 ± 0.96

P < 0.01^a

3.87 ± 0.97

P < 0.01^a

3.76 ± 0.89 (39.9%)

P < 0.01^a

LVEF(%)

58.18 ± 5.68

51.77 ± 7.63

P = 0.005^b

57.17 ± 4.50

P = 0.462^b

59.51 ± 5.33

P = 0.227^b

59.38 ± 4.69

P = 0.674^b

Sham

P1

8.21 ± 1.09

8.23 ± 1.07

P = 0.36^a

8.40 ± 0.94

P = 0.081^a

8.67 ± 0.80

P = 0.038^a

8.70 ± 0.74

P = 0.041^a

P2

9.51 ± 0.83

9.51 ± 0.83

P = 0.36^a

9.57 ± 0.94

P = 0.618^a

10.01 ± 1.18

P = 0.052^a

9.91 ± 1.06

P = 0.043^a

LVEF(%)

58.57 ± 7.83

P = 0.918^c

58.28 ± 6.97

P = 0.121^c

58.86 ± 3.85

P = 0.466^c

59.71 ± 5.82

P = 0.948^c

59.56 ± 4.48

P = 0.777^c