Table 2.

Comparison of pre and post ECG parameters after RVA pacing, HBP and LBBP.

	RVP (n = 41)			LBBP (n = 45)			HBP (n = 35)
	Pre	Post	P value	Pre	Post	P value	Pre	Post	P value
QRS duration	128.7 ± 21.8	153.6 ± 13.7	<0.0001	130.2 ± 27.2	115.8 ± 9.2	<0.0001	127.9 ± 29	111.1 ± 16.5	0.01
QTc duration	472.9 ± 58.7	497.4 ± 38.1	0.02	456.5 ± 55.5	458.8 ± 29.1	0.799	454.3 ± 40.2	457.5 ± 20.2	0.91
Tp-Te duration	104.2 ± 13.9	120.3 ± 9.9	<0.0001	106.6 ± 16.6	88.5 ± 13.8	<0.0001	100.1 ± 17.8	79.7 ± 18.6	0.003
Tp-Te/QTc	0.22 ± 0.04	0.24 ± 0.02	0.005	0.23 ± 0.04	0.19 ± 0.02	<0.0001	0.22 ± 0.03	0.17 ± 0.04	0.005
LVEF	61.2 ± 4.0	58.7 ± 8.2	0.08	58.3 ± 5.8	60.3 ± 4.5	0.09	59.3 ± 6.4	61.5 ± 3.8	0.08