Table 2 Electrophysiology study and Radiofrequency catheter ablation of VAs arising from MSPA and PSCs
Total (n = 106) | MSPA (n = 31) | PSCs (n = 75) | P valve | |
|---|---|---|---|---|
Pulmonary artery potential | 18 (17.0%) | 4 (12.9%) | 14 (18.7%) | > 0.05 |
QS morphology in unipolar electrogram | 106 (100%) | 31 (100%) | 75 (100%) | > 0.05 |
With notch in descending limb | 41 (38.7%) | 11 (35.5%) | 30 (40%) | > 0.05 |
Farfield atrial potential of target site in bipolar electrogram | 63 (59.4%) | 18 (58.1%) | 45 (60.0%) | > 0.05 |
Merged or discrete potential of peak or split morphology of target site in bipolar electrogram | 69 (65.1%) | 20 (64.5%) | 49 (65.3%) | > 0.05 |
Reversed polarity of bipolar electrograms | 53 (50.0%) | 15 (48.4%) | 38 (50.7%) | > 0.05 |
Application of temperature-controlled catheter | 34 (32.1%) | 26 (83.87) | 9 (13.0) | < 0.001 |
Application of irrigated-tip catheter | 71 (67.0%) | 5 (16.13) | 66 (87.00) | < 0.05 |
V-QRS (ms) | −34.71 ± 4.26 | −35.62 ± 6.79 | −34.78 ± 3.75 | > 0.05 |
Pace match of target site (lead) | 11.16 ± 0.90 | 11.34 ± 0.52 | 11.08 ± 0.90 | < 0.05 |
Pacing target site induced good pace match | 95 (89.6%) | 25 (80.7%) | 70 (93.3%) | > 0.05 |
12-lead match | 40 (37.7%) | 10 (32.3%) | 30 (40.0%) | > 0.05 |
11-lead match | 33 (31.1%) | 9 (29.0%) | 24 (32.0%) | > 0.05 |
10-lead match | 22 (20.8%) | 6 (19.4%) | 16 (21.3%) | > 0.05 |
Application of R0 Swartz sheath | 73 (68.9%) | 2 (6.45%) | 71 (94.67) | < 0.001 |
Procedural time (min) | 54.28 ± 13.63 | 65.24 ± 17.26 | 46.28 ± 9.30 | < 0.001 |
Fluoroscopic time (min) | 8.07 ± 2.93 | 9.31 ± 3.16 | 7.19 ± 2.77 | < 0.05 |
Lesions of energy application | 2.76 ± 1.89 | 3.89 ± 2.59 | 2.20 ± 0.79 | < 0.001 |
Energy delivery duration (s) | 243.86 ± 88.40 | 335.32 ± 72.11 | 210.76 ± 65.80 | < 0.001 |
Success of ablation | 106 (100%) | 31 (100.00) | 75 (100.00) | > 0.05 |
Response of energy application on target site | ||||
PVC/VT disappeared immediately | 95 (89.6%) | 27 (87.10) | 68 (90.67) | > 0.05 |
PVC accelerated or decelerated prior to disappearance | 11 (10.4%) | 4 (12.90) | 7 (10.72) | > 0.05 |