Skip to main content

Table 2 Pacemaker parameters and QRS duration

From: Chronology of cardiac dysfunction after permanent pacemaker implantation: an observational 2 year prospective study in North India

 

N

Min

Max

Mean

SD

p value

Resistance-A (Ohm)

 Before Discharge

63

430.0

695.0

535.49

61.32

 

 1 month

62

62.0

671.0

511.34

90.66

0.566

 6 month

60

425.0

722.0

575.13

61.43

0.108

Resistance-V (Ohm)

 Before Discharge

96

345.0

1380.0

595.20

112.47

 

 1 month

94

318.0

1335.0

565.33

111.19

 

 6 month

90

355.0

1445.0

628.16

119.59

0.7

Voltage-A (Volt)

 Before Discharge

63

0.5

4.0

1.00

0.44

 

 1 month

62

0.3

1.5

0.85

0.26

0.053

 6 month

60

0.3

1.5

0.77

0.24

0.066

Voltage-V (Volt)

 Before Discharge

96

0.3

4.0

0.96

0.39

 

 1 month

94

0.3

2.0

0.85

0.27

0.1

 6 month

90

0.3

6.2

0.87

0.63

0.1

Sensitivity-A

 Before Discharge

63

0.5

6.2

2.71

1.37

 

 1 month

62

0.5

6.0

2.57

1.23

0.099

 6 month

60

0.5

6.5

2.45

1.24

0.085

Sensitivity-V

 Before Discharge

96

0.0

15.6

5.82

5.45

 

 1 month

94

0.0

15.0

6.24

5.63

0.100

 6 month

90

0.0

15.6

6.40

5.61

0.126

Pacing percentage (%)

 Before Discharge

96

91

96

93.5

2.12

0.723

 1 month

92

89

94

91.5

1.32

0.542

 6 month

95

92

97

94.5

3.21

0.891

QRS duration (msec)

 At admission

96

82.0

202.0

133.18

29.45

 

 Before Discharge

96

92.0

204.0

150.29

24.74

0.000

 1 month

94

84.0

188.0

140.87

20.38

0.001

 6 month

90

98.0

184.0

146.03

19.82

0.000