Table 3. Comparison between two subgroups according to the right ventricle pacing sites in the patients implanted with active-fixation RV electrodes.

	Threshold (V)				Impedance (Ω)
Follow-up time	n	RVOT	n	RVA	n	RVOT	n	RVA
Baseline	43	0.82 ± 0.29	57	0.88 ± 0.33	43	604.88 ± 94.65	57	596.67 ± 94.55
1 Month	40	0.85 ± 0.66	54	0.59 ± 0.50	40	523.33 ± 136.43	54	571.08 ± 135.04
3 Months	41	1.02 ± 1.09	54	0.52 ± 0.21	41	556.10 ± 127.99	54	562.71 ± 136.16
6 Months	39	0.90 ± 1.05	57	0.62 ± 0.16	39	534.61 ± 134.87	57	549.63 ± 137.90
1 Year	42	0.95 ± 0.57	56	0.82 ± 0.19	42	504.52 ± 153.93	56	533.30 ± 140.08
2 Years	41	0.78 ± 0.24	54	0.67 ± 0.22	41	460.43 ± 135.96	54	554.70 ± 134.93
3 Years	43	0.90 ± 0.28	53	0.75 ± 0.20	43	498.07 ± 157.51	53	499.93 ± 124.80
4 Years	42	0.70 ± 0.21	56	0.65 ± 0.20	42	464.20 ± 193.31	56	544.77 ± 110.57
5 Years	40	0.65 ± 0.14	54	0.70 ± 0.22	40	532.50 ± 166.17	54	548.81 ± 105.13

Note: Data are shown as mean ± SD. RV = right ventricle; RVOT = right ventricular outflow tract; RVA = right ventricle apex.