Table 3 Open in new tab The Influence of...

	Pacing site	P values
LV systolic function
LVEF (%), mean ±SD	54 ± 6	48 ± 5	52 ± 5	54 ± 6	0.001	0.006	0.005	0.24
LVESV (ml), mean± SD	56 ± 20	56 ± 23	49 ± 23	49 ± 20	0.69	0.01	0.02	0.56
LVEDV (ml), mean± SD	122 ± 36	107 ± 35	101 ± 41	108 ± 42	0.01	0.20	0.72	0.10
SV (mL), mean± SD	68 ± 23	50 ± 11	54 ± 13	55 ± 12	0.004	0.02	0.01	0.39
LV diastolic function
DT (ms), mean± SD	n/a	221 ± 95	209 ± 65	214 ± 74	n/a	0.94	0.94	0.65
E_a (cm/s), mean ± SD	n/a	3.98 ± 1.91	4.03 ± 1.56	4.57 ± 1.86	n/a	0.81	0.02	0.07
E_m (cm/s), mean ± SD	n/a	3.54 ± 1.61	3.59 ± 1.36	4.17 ± 1.55	n/a	0.66	0.01	0.01
E/A ratio, mean ± SD	n/a	0.79 ± 0.25	0.85 ± 0.42	0.84 ± 0.37	n/a	0.61	0.86	0.94
Myocardial performance index
Tei index, mean ±SD	n/a	0.63 ± 0.28	0.48 ± 0.16	0.46 ± 0.18	n/a	0.02	0.04	0.96

Pacing site

P values

AAI

RVA

RV mIVS

RVOT

RVA vs. AAI

RVmIVS vs. RVA

RVOT vs. RVA

RVOT vs. RVmIVS

LV systolic function

LVEF (%), mean ±SD

54 ± 6

48 ± 5

52 ± 5

54 ± 6

0.001

0.006

0.005

0.24

LVESV (ml), mean± SD

56 ± 20

56 ± 23

49 ± 23

49 ± 20

0.69

0.01

0.02

0.56

LVEDV (ml), mean± SD

122 ± 36

107 ± 35

101 ± 41

108 ± 42

0.01

0.20

0.72

0.10

SV (mL), mean± SD

68 ± 23

50 ± 11

54 ± 13

55 ± 12

0.004

0.02

0.01

0.39

LV diastolic function

DT (ms), mean± SD

n/a

221 ± 95

209 ± 65

214 ± 74

n/a

0.94

0.65

E_a (cm/s), mean ± SD

n/a

3.98 ± 1.91

4.03 ± 1.56

4.57 ± 1.86

n/a

0.81

0.02

0.07

E_m (cm/s), mean ± SD

n/a

3.54 ± 1.61

3.59 ± 1.36

4.17 ± 1.55

n/a

0.66

0.01

E/A ratio, mean ± SD

n/a

0.79 ± 0.25

0.85 ± 0.42

0.84 ± 0.37

n/a

0.61

0.86

0.94

Myocardial performance index

Tei index, mean ±SD

n/a

0.63 ± 0.28

0.48 ± 0.16

0.46 ± 0.18

n/a

0.02

0.04

0.96

	Pacing site	P values
LV systolic function
LVEF (%), mean ±SD	54 ± 6	48 ± 5	52 ± 5	54 ± 6	0.001	0.006	0.005	0.24
LVESV (ml), mean± SD	56 ± 20	56 ± 23	49 ± 23	49 ± 20	0.69	0.01	0.02	0.56
LVEDV (ml), mean± SD	122 ± 36	107 ± 35	101 ± 41	108 ± 42	0.01	0.20	0.72	0.10
SV (mL), mean± SD	68 ± 23	50 ± 11	54 ± 13	55 ± 12	0.004	0.02	0.01	0.39
LV diastolic function
DT (ms), mean± SD	n/a	221 ± 95	209 ± 65	214 ± 74	n/a	0.94	0.94	0.65
E_a (cm/s), mean ± SD	n/a	3.98 ± 1.91	4.03 ± 1.56	4.57 ± 1.86	n/a	0.81	0.02	0.07
E_m (cm/s), mean ± SD	n/a	3.54 ± 1.61	3.59 ± 1.36	4.17 ± 1.55	n/a	0.66	0.01	0.01
E/A ratio, mean ± SD	n/a	0.79 ± 0.25	0.85 ± 0.42	0.84 ± 0.37	n/a	0.61	0.86	0.94
Myocardial performance index
Tei index, mean ±SD	n/a	0.63 ± 0.28	0.48 ± 0.16	0.46 ± 0.18	n/a	0.02	0.04	0.96

Table 3

Open in new tab

The Influence of pacing site on standard echocardiographic parameters

	Pacing site				P values
	AAI	RVA	RV mIVS	RVOT	RVA vs. AAI	RVmIVS vs. RVA	RVOT vs. RVA	RVOT vs. RVmIVS
LV systolic function
LVEF (%), mean ±SD	54 ± 6	48 ± 5	52 ± 5	54 ± 6	0.001	0.006	0.005	0.24
LVESV (ml), mean± SD	56 ± 20	56 ± 23	49 ± 23	49 ± 20	0.69	0.01	0.02	0.56
LVEDV (ml), mean± SD	122 ± 36	107 ± 35	101 ± 41	108 ± 42	0.01	0.20	0.72	0.10
SV (mL), mean± SD	68 ± 23	50 ± 11	54 ± 13	55 ± 12	0.004	0.02	0.01	0.39
LV diastolic function
DT (ms), mean± SD	n/a	221 ± 95	209 ± 65	214 ± 74	n/a	0.94	0.94	0.65
E_a (cm/s), mean ± SD	n/a	3.98 ± 1.91	4.03 ± 1.56	4.57 ± 1.86	n/a	0.81	0.02	0.07
E_m (cm/s), mean ± SD	n/a	3.54 ± 1.61	3.59 ± 1.36	4.17 ± 1.55	n/a	0.66	0.01	0.01
E/A ratio, mean ± SD	n/a	0.79 ± 0.25	0.85 ± 0.42	0.84 ± 0.37	n/a	0.61	0.86	0.94
Myocardial performance index
Tei index, mean ±SD	n/a	0.63 ± 0.28	0.48 ± 0.16	0.46 ± 0.18	n/a	0.02	0.04	0.96

	Pacing site				P values
	AAI	RVA	RV mIVS	RVOT	RVA vs. AAI	RVmIVS vs. RVA	RVOT vs. RVA	RVOT vs. RVmIVS
LV systolic function
LVEF (%), mean ±SD	54 ± 6	48 ± 5	52 ± 5	54 ± 6	0.001	0.006	0.005	0.24
LVESV (ml), mean± SD	56 ± 20	56 ± 23	49 ± 23	49 ± 20	0.69	0.01	0.02	0.56
LVEDV (ml), mean± SD	122 ± 36	107 ± 35	101 ± 41	108 ± 42	0.01	0.20	0.72	0.10
SV (mL), mean± SD	68 ± 23	50 ± 11	54 ± 13	55 ± 12	0.004	0.02	0.01	0.39
LV diastolic function
DT (ms), mean± SD	n/a	221 ± 95	209 ± 65	214 ± 74	n/a	0.94	0.94	0.65
E_a (cm/s), mean ± SD	n/a	3.98 ± 1.91	4.03 ± 1.56	4.57 ± 1.86	n/a	0.81	0.02	0.07
E_m (cm/s), mean ± SD	n/a	3.54 ± 1.61	3.59 ± 1.36	4.17 ± 1.55	n/a	0.66	0.01	0.01
E/A ratio, mean ± SD	n/a	0.79 ± 0.25	0.85 ± 0.42	0.84 ± 0.37	n/a	0.61	0.86	0.94
Myocardial performance index
Tei index, mean ±SD	n/a	0.63 ± 0.28	0.48 ± 0.16	0.46 ± 0.18	n/a	0.02	0.04	0.96

AAI, baseline atrial pacing; DT, E-wave deceleration time; E, trans-mitral early diastolic velocity; E_a, average early diastolic velocity for septal and lateral mitral annulus; E_m, average early diastolic velocity for six basal LV segments; IQR: interquartile range; n/a, not assessable; LV, left ventricle; LVEF, LV ejection fraction; LVESV, LV end systolic volume; LVEDV, LV end diastolic volume; RVA, right ventricular apex; RV mIVS, RV mid-inter-ventricular septum; RVOT, RV outflow tract; SD, standard deviation; SV, stroke volume.

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