Table 2.
Comparison of procedural, mapping and ablation data between n = 50 WPW syndrome patients undergoing 3D-mapping with only a contact force-sensing ablation catheter (Abl) or a multi-electrode high-resolution catheter (ME) for mapping.
| Parameter | All patients (n = 50) |
Abl mapping (n = 27) |
ME mapping (n = 23) |
P value* |
|---|---|---|---|---|
| Procedural data | ||||
| Acute success | 48 (96) | 26 (96) | 22 (96) | 1.0 |
| Complications | 5 (10) | 2 (7,4) | 3 (13,0) | 0.64 |
| Adenosine testing | 38 (76) | 18 (67) | 20 (87) | 0.11 |
| Adenosine dose, mg | 18.8 ± 0.5 | 17.9 ± 0.9 | 19.5 ± 0.7 | 0.18 |
| Fluoroscopy time, min | 5.3 ± 0.8 | 2.7 ± 0.7 | 8.2 ± 1.3 | <0.001 |
| Dose Area Product, µGy x m2 | 95.6 ± 16.9 | 34.1 ± 9.8 | 166.8 ± 28.7 | <0.0001 |
| Procedure time, min | 120 ± 7 | 111 ± 10 | 138 ± 8 | 0.08 |
| Mapping and ablation data | ||||
| AP potential | 25 (50) | 13 (52) | 12 (52) | 1.0 |
| Isochronal area (initial 5-ms) , cm2 |
0.70 ± 0.17 | 1.25 ± 0.29 | 0.15 ± 0.03 | <0.001 |
| Isochronal area (initial 10-ms) , cm2 |
1.94 ± 0.37 | 3.41 ± 0.58 | 0.55 ± 0.12 | <0.0001 |
| RF deliveries to AP block | 1 (1–2) | 1 (1–2) | 1 (1–2) | 0.71 |
| AP elimination with 1st RF | 28 (61) | 15 (52) | 13 (65) | 0.76 |
| AP automaticity during RF | 5 (10) | 0 (0) | 5 (22) | <0.05 |
Values are n (%), n, mean ± SE, or median (IQR).
*P values by Student’s t test, χ2, Fisher’s exact or Mann-Whitney test.
P values < 0.05 were considered significant.