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

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

	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

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.
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.

ISSN: 1471-2261