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Table 2 QRS morphology during VAs on surface ECG

From: Electrocardiographic and electrophysiological characteristics of idiopathic ventricular arrhythmias with acute successful ablation at the superior portion of the mitral annulus

Pt. no.

QRS voltage in the inferior leads (mV)

QRS duration (ms)

MDI

PDI

S-waves in lead V6

Inferior lead notching

RI (mV)

SI (mV)

RII (mV)

RIII (mV)

QaVR (mV)

QaVL (mV)

RaVF (mV)

1

0.35

0.55

1.58

1.38

0.88

0.57

1.40

173

0.68

0.63

No

Yes

2

0.00

0.32

1.15

1.20

0.60

0.80

1.20

157

0.47

0.46

No

No

3

0.28

0.82

1.25

1.10

0.77

0.70

1.17

157

0.54

0.57

No

Yes

4

0.00

0.68

1.95

2.14

1.12

1.32

2.14

158

0.51

0.52

No

Yes

5

0.10

0.40

1.00

1.25

0.50

0.70

1.10

147

0.76

0.74

Yes

Yes

6

0.00

0.30

0.80

0.90

0.30

0.60

0.80

192

0.55

0.33

No

Yes

7

0.00

0.71

2.52

3.10

1.35

1.48

2.17

198

0.31

0.61

No

Yes

8

0.00

0.70

1.02

1.18

0.75

0.75

1.07

172

0.63

0.66

Yes

Yes

9

0.25

0.35

1.60

1.80

0.80

1.00

1.60

183

0.52

0.52

No

No

10

0.40

0.62

2.34

2.27

1.39

0.9

1.42

142

0.54

0.54

No

Yes

11

0.35

0.40

1.30

1.20

0.80

0.8

0.90

147

0.58

0.67

No

No

12

0.05

0.07

1.30

1.30

0.60

0.9

1.30

183

0.56

0.33

Yes

Yes

13

0.00

0.50

1.50

1.80

0.80

1.00

1.60

186

0.58

0.40

Yes

Yes

14

0.00

0.48

1.45

1.85

0.75

0.90

1.55

181

0.51

0.40

No

Yes

15

0.42

0.51

1.91

2.24

1.09

1.27

2.06

170

0.55

0.64

No

No

16

0.00

0.45

1.80

2.10

0.80

1.20

2.00

158

0.43

0.49

No

Yes

17

0.30

0.60

1.00

1.60

0.80

1.00

1.60

150

0.59

0.65

No

No

18

0.10

0.50

1.90

2.15

0.80

1.30

2.05

145

0.59

0.62

No

No

19

0.40

0.71

2.30

2.20

1.05

1.40

2.40

165

0.58

0.53

No

No

20

0.28

0.48

1.30

1.60

0.80

0.9

1.50

167

0.45

0.46

Yes

Yes

21

0.03

0.35

1.23

1.00

0.73

0.47

1.13

156

0.58

0.52

No

No

22

0.00

0.63

1.41

1.51

0.78

0.88

1.56

186

0.59

0.40

No

No

23

0.05

0.54

1.13

0.93

0.60

0.63

1.02

136

0.59

0.53

No

No

24

0.30

0.60

0.90

1.45

0.40

1.00

1.15

178

0.53

0.49

No

Yes

25

0.15

0.22

2.12

2.33

0.9

0.85

1.85

191

0.42

0.42

No

No

26

0

0.41

1.32

1.65

0.45

1.05

1.40

195

0.50

0.46

Yes

No

Mean ± SD or percent

0.00–0.30 (0.08)*

0.50 ± 0.17

1.50 ± 0.47

1.66 ± 0.54

0.60–0.89 (0.80)*

0.94 ± 0.27

1.51 ± 0.43

168 ± 18

0.54 ± 0.07

0.52 ± 0.11

23.1%

53.8%

  1. Values are given as the mean ± SD (range) or percent (%), unless otherwise indicated. The maximum deflection index (MDI) was defined as the duration from the earliest activation to the peak of the largest amplitude deflection divided by the total QRS duration, measured in the precordial leads. (4) The peak deflection index (PDI) was defined as the duration from the earliest activation to the peak of the largest amplitude deflection divided by the total QRS duration, measured in the inferior leads
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BMC Cardiovascular Disorders

ISSN: 1471-2261

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