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Table 2 Comparison of the results of mapping and ablation among the three groups

From: Electrocardiogram features of premature ventricular contractions/ventricular tachycardia originating from the left ventricular outflow tract and the treatment outcome of radiofrequency catheter ablation

Group

Activation of mapping V-QRS time (ms)

Mapping cases with effective target site pace (%)

Ablation times

Ablation time (s)

Operation time (min)

Exposure time of X-rays (min)

Effective ablation cases (%)

Left coronary sinus (n = 32)

35.62 ± 4.17

3(9.38)

2.79 ± 1.42

249.23 ± 71.68

73.01 ± 26.18

10.11 ± 4.23

28(87.50)

Right coronary sinus (n = 11)

35.60 ± 3.92

8(72.73)*

2.85 ± 1.58

268.81 ± 74.36

75.23 ± 27.84

10.57 ± 4.11

11(100.00)

Under left coronary sinus (n = 9)

35.75 ± 5.44

8(88.89)â–³

1.67 ± 0.56△☆☆

276.27 ± 56.41

71.89 ± 34.48

9.67 ± 3.88

8(88.89)

  1. Note: Comparison of the right coronary sinus group with the left coronary sinus group, *P < 0.01; Comparison of the under left coronary sinus group with the left coronary sinus group, △ < 0.01; Comparison of the under left coronary sinus group with the right coronary sinus group, ☆☆p < 0.05.