Table 2 Effects on left ventricular pacing site and interventricular pacing interval on intra‐LV and inter‐LV–RV dyssynchrony.

	Unpaced	LV pacing site	Interventricular pacing intervals (ms)
			RV preactivation		Synch	LV preactivation
			80	40	0	−40	−80
Mean intra‐LV dyssynchrony (ms)†	77 (50)	Lateral	42 (28)	51 (36)	43 (27)	39 (30)	36 (15)
			p = 0.005	p = 0.05	p = 0.006	p = 0.002	p = 0.001
		Inferior	44 (21)	41 (26)	45 (17)	39 (18)	46 (12)
			NS	p = 0.06	p = 0.06	p = 0.01	NS
Mean inter‐LV–RV dyssynchrony (ms)‡	111 (47)	Lateral	68 (37)*	67 (38)**	54 (40)	46 (38)	46 (35)
			p<0.001	p = 0.001	p<0.001	p<0.001	p<0.001
		Inferior	70 (16)*	58 (19)	57 (27)	57 (23)	50 (23)
			NS	p = 0.005	p = 0.01	p = 0.01	p = 0.002

Data are mean (SD); p values shown are for comparisons with baseline, unpaced data.

*p<0.01, **p<0.001 for comparison of sequential and synchronous biventricular pacing for the same LV pacing site.

†ANOVA, NS when compared at all of the interventricular pacing intervals.

‡ANOVA, p<0.0001 when compared at all of the interventricular pacing intervals.

LV, left ventricular; RV, right ventricular; synch, synchronous.