Table 2 P wave parameters of 12-lead electrocardiogram before ablation

pre-HR(Times/min)

69.18 ± 12.32

69.27 ± 9.81

0.967

pre-QRS interval(ms)

82.39 ± 14.25

83.22 ± 21.70

0.759

pre-QTc interval(ms)

415.44 ± 25.89

409.73 ± 31.92

0.214

pre-PR interval(ms)

148.90 ± 21.21

151.02 ± 23.96

0.562

pre-PWD_I(ms)

103.01 ± 17.90

105.11 ± 18.50

0.489

pre-PWD_II(ms)

114.03 ± 14.18

118.11 ± 15.82

0.096

pre-PWD_III(ms)

102.54 ± 17.88

104.16 ± 17.04

0.586

pre-PWD_aVR(ms)

106.34 ± 15.24

108.78 ± 16.26

0.348

pre-PWD_aVL(ms)

90.76 ± 18.84

96.02 ± 18.76

0.097

pre-PWD_aVF(ms)

108.64 ± 16.31

107.89 ± 18.35

0.789

pre-PWD_V1(ms)

99.29 ± 18.21

103.42 ± 22.22

0.199

pre-PWD_V2(ms)

100.37 ± 18.60

106.27 ± 17.90

0.058

pre-PWD_V3(ms)

108.31 ± 15.99

113.22 ± 13.36

0.060

pre-PWD_V4(ms)

111.61 ± 15.35

114.80 ± 16.31

0.223

pre-PWD_V5(ms)

112.32 ± 14.96

115.93 ± 14.12

0.147

pre-PWD_V6(ms)

111.54 ± 16.16

115.80 ± 12.85

0.103

pre-Pmax(ms)

124.21 ± 12.03

128.84 ± 12.68

0.024 *

pre-Pd(ms)

45.58 ± 13.16

51.29 ± 15.09

0.013 *

pre-P-index(ms)

13.87 ± 4.41

13.8 ± 4.59

0.959

pre-PWA_I(mV)

0.07 ± 0.02

0.07 ± 0.03

0.578

pre-PWA_II(mV)

0.11 ± 0.04

0.11 ± 0.04

0.895

pre-PWA_III(mV)

0.07 ± 0.03

0.07 ± 0.03

0.476

pre-PWA_aVR(mV)

0.09 ± 0.03

0.09 ± 0.03

0.688

pre-PWA_aVL(mV)

0.04 ± 0.02

0.04 ± 0.02

0.800

pre-PWA_aVF(mV)

0.09 ± 0.04

0.09 ± 0.03

0.915

pre-PWA_V1(mV)

0.05 ± 0.03

0.06 ± 0.03

0.074

pre-PWA_V2(mV)

0.05 ± 0.03

0.06 ± 0.03

0.462

pre-PWA_V3(mV)

0.06 ± 0.03

0.06 ± 0.03

0.899

pre-PWA_V4(mV)

0.06 ± 0.03

0.07 ± 0.03

0.705

pre-PWA_V5(mV)

0.06 ± 0.02

0.07 ± 0.02

0.483

pre-PWA_V6(mV)

0.06 ± 0.02

0.06 ± 0.03

0.612

pre-P-area(ms.mV)

6.35 ± 2.55

6.51 ± 2.14

0.695

pre-Ptf_V1(mm.s)

0.03 ± 0.02

0.04 ± 0.02

0.028 *

pre-PWN(%)

50(29.8%)

10(22.2%)

0.417

pre-PWN counts(N)

1.27 (2.26)

1.09 (2.22)

0.625

pre-pIAB(%)

57(33.9%)

21(46.7%)

0.161

pre-aIAB(%)

6(3.6%)

2(4.4%)

1