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Table 2 The changes of ECG characteristics, ECG parameters and BNP levels in the two groups before and after operation

From: A new method of building permanent A-V block model: ablating his-bundle potential through femoral artery with pre-implanted biventricular pacemaker

  Left ventricle ablation group Right ventricle ablation
  Before operation 2 weeks post operation 4 weeks post operation Before operation 2 weeks post operation 4 weeks post operation
Heart rate (bpm) 140 ± 10 130 130 135 ± 7 130 130
Weight (kg) 18.89 ± 1.56 18.39 ± 1.30 19.19 ± 1.45 18.64 ± 1.40 18.15 ± 1.33 19.27 ± 1.19
Respiration rate (bpm) 23.77 ± 4.93 23.67 ± 4.57 23.19 ± 4.18 22.84 ± 4.85 24.35 ± 4.39 23.65 ± 3.88
QRS duration (ms) 70.51 ± 5.20 77.72 ± 4.17** 80.73 ± 4.25* 70.65 ± 6.50 78.50 ± 5.37** 82.81 ± 6.23*
QT intervals (ms) 202.23 ± 18.42 216.31 ± 17.71 216.10 ± 16.73 201.60 ± 13.25 210.54 ± 13.74 211.18 ± 13.65
Tp-Te interval (ms) 59.52 ± 10.87 70.30 ± 8.44 83.81 ± 9.32* 60.23 ± 12.34 67.15 ± 12.68 83.10 ± 8.06*
LAID (mm) 20.31 ± 1.24 20.49 ± 1.62 20.81 ± 1.45 20.15 ± 1.167 20.81 ± 1.167 20.64 ± 1.26
LVEDD (mm) 18.78 ± 1.85 19.40 ± 1.79 19.88 ± 1.42 18.60 ± 1.85 19.03 ± 1.81 19.51 ± 1.15
LVESD (mm) 22.26 ± 2.50 23.93 ± 0.83 22.42 ± 2.69 21.15 ± 1.70 21.98 ± 1.39 22.65 ± 1.48
IVSDD (mm) 5.64 ± 0.64 5.83 ± 0.74 5.10 ± 0.64 5.61 ± 0.88 5.73 ± 0.17 5.75 ± 0.16
IVSSD (mm) 9.71 ± 0.46 9.91 ± 0.35 10.16 ± 0.53 9.72 ± 0.43 9.85 ± 0.31 9.98 ± 0.45
LVEF (%) 67.01 ± 4.06 63.56 ± 3.82 63.60 ± 1.96 65.98 ± 1.39 63.31 ± 1.19 62.65 ± 1.54
FS (%) 35.15 ± 2.02 35.48 ± 2.49 36.65 ± 1.73 34.81 ± 2.30 34.98 ± 2.59 36.31 ± 1.84
BNP (μg/L) 50.09 ± 15.96 52.70 ± 16.51 54.09 ± 14.66 48.18 ± 16.85 50.10 ± 16.26 51.41 ± 15.50
  1. Comparison of the parameters 4-week post operation with those before operation, *P < 0.05;Comparison of the parameters 2-week post operation with those before operation, **P < 0.05.
  2. LAID: left atrial internal diameter, LVEDD: left ventricle end diastolic diameter, LVESD: left ventricle end systolic diameter, IVSDD: intraventricular septum diastolic diameter, IVSSD: intraventricular septum systolic diameter, LVEF: Left ventricle ejection fraction, FS = fractional shortening.